Struct holochain::conductor::space::Spaces

source · 
pub struct Spaces { /* private fields */ }
Expand description

This is the set of all current DnaHash spaces for all cells installed on this conductor.

Implementations§

Create a new empty set of DnaHash spaces.

Examples found in repository?
src/sweettest/sweet_conductor.rs (lines 97-100)
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    pub async fn new(
        handle: ConductorHandle,
        env_dir: TestDir,
        config: ConductorConfig,
    ) -> SweetConductor {
        // Automatically add a test app interface
        handle
            .add_test_app_interface(AppInterfaceId::default())
            .await
            .expect("Couldn't set up test app interface");

        // Get a stream of all signals since conductor startup
        let signal_stream = handle.signal_broadcaster().subscribe_merged();

        // XXX: this is a bit wonky.
        // We create a Spaces instance here purely because it's easier to initialize
        // the per-space databases this way. However, we actually use the TestEnvs
        // to actually access those databases.
        // As a TODO, we can remove the need for TestEnvs in sweettest or have
        // some other better integration between the two.
        let spaces = Spaces::new(&ConductorConfig {
            environment_path: env_dir.to_path_buf().into(),
            ..Default::default()
        })
        .unwrap();

        let keystore = handle.keystore().clone();

        Self {
            handle: Some(SweetConductorHandle(handle)),
            db_dir: env_dir,
            keystore,
            spaces,
            config,
            dnas: Vec::new(),
            signal_stream: Some(Box::new(signal_stream)),
        }
    }
More examples
Hide additional examples
src/conductor/conductor/builder.rs (line 105)
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    pub async fn build(self) -> ConductorResult<ConductorHandle> {
        tracing::info!(?self.config);

        let keystore = if let Some(keystore) = self.keystore {
            keystore
        } else {
            pub(crate) fn warn_no_encryption() {
                #[cfg(not(feature = "db-encryption"))]
                {
                    const MSG: &str = "WARNING: running without local db encryption";
                    eprintln!("{}", MSG);
                    println!("{}", MSG);
                    tracing::warn!("{}", MSG);
                }
            }
            let get_passphrase = || -> ConductorResult<sodoken::BufRead> {
                match self.passphrase {
                    None => Err(
                        one_err::OneErr::new("passphrase required for lair keystore api").into(),
                    ),
                    Some(p) => Ok(p),
                }
            };
            match &self.config.keystore {
                KeystoreConfig::DangerTestKeystore => spawn_test_keystore().await?,
                KeystoreConfig::LairServer { connection_url } => {
                    warn_no_encryption();
                    let passphrase = get_passphrase()?;
                    spawn_lair_keystore(connection_url.clone(), passphrase).await?
                }
                KeystoreConfig::LairServerInProc { lair_root } => {
                    warn_no_encryption();
                    let mut keystore_config_path = lair_root.clone().unwrap_or_else(|| {
                        let mut p: std::path::PathBuf = self.config.environment_path.clone().into();
                        p.push("keystore");
                        p
                    });
                    keystore_config_path.push("lair-keystore-config.yaml");
                    let passphrase = get_passphrase()?;
                    spawn_lair_keystore_in_proc(keystore_config_path, passphrase).await?
                }
            }
        };

        let Self {
            ribosome_store,
            config,
            ..
        } = self;

        let ribosome_store = RwShare::new(ribosome_store);

        let spaces = Spaces::new(&config)?;
        let tag = spaces.get_state().await?.tag().clone();

        let network_config = config.network.clone().unwrap_or_default();
        let (cert_digest, cert, cert_priv_key) =
            keystore.get_or_create_tls_cert_by_tag(tag.0).await?;
        let tls_config =
            holochain_p2p::kitsune_p2p::dependencies::kitsune_p2p_types::tls::TlsConfig {
                cert,
                cert_priv_key,
                cert_digest,
            };
        let strat = ArqStrat::from_params(network_config.tuning_params.gossip_redundancy_target);

        let host = KitsuneHostImpl::new(
            spaces.clone(),
            ribosome_store.clone(),
            network_config.tuning_params.clone(),
            strat,
        );

        let (holochain_p2p, p2p_evt) =
            holochain_p2p::spawn_holochain_p2p(network_config, tls_config, host).await?;

        let (post_commit_sender, post_commit_receiver) =
            tokio::sync::mpsc::channel(POST_COMMIT_CHANNEL_BOUND);

        let conductor = Conductor::new(
            config.clone(),
            ribosome_store,
            keystore,
            holochain_p2p,
            spaces,
            post_commit_sender,
        );

        let shutting_down = conductor.shutting_down.clone();

        #[cfg(any(test, feature = "test_utils"))]
        let conductor = Self::update_fake_state(self.state, conductor).await?;

        // Create handle
        let handle: ConductorHandle = Arc::new(conductor);

        {
            let handle = handle.clone();
            tokio::task::spawn(async move {
                while !shutting_down.load(std::sync::atomic::Ordering::Relaxed) {
                    tokio::time::sleep(std::time::Duration::from_secs(60)).await;
                    if let Err(e) = handle.prune_p2p_agents_db().await {
                        tracing::error!("failed to prune p2p_agents_db: {:?}", e);
                    }
                }
            });
        }

        Self::finish(
            handle,
            config,
            p2p_evt,
            post_commit_receiver,
            self.no_print_setup,
        )
        .await
    }

    pub(crate) fn spawn_post_commit(
        conductor_handle: ConductorHandle,
        receiver: tokio::sync::mpsc::Receiver<PostCommitArgs>,
    ) {
        let receiver_stream = tokio_stream::wrappers::ReceiverStream::new(receiver);
        tokio::task::spawn(receiver_stream.for_each_concurrent(
            POST_COMMIT_CONCURRENT_LIMIT,
            move |post_commit_args| {
                let conductor_handle = conductor_handle.clone();
                async move {
                    let PostCommitArgs {
                        host_access,
                        invocation,
                        cell_id,
                    } = post_commit_args;
                    match conductor_handle.clone().get_ribosome(cell_id.dna_hash()) {
                        Ok(ribosome) => {
                            if let Err(e) = tokio::task::spawn_blocking(move || {
                                if let Err(e) = ribosome.run_post_commit(host_access, invocation) {
                                    tracing::error!(?e);
                                }
                            })
                            .await
                            {
                                tracing::error!(?e);
                            }
                        }
                        Err(e) => {
                            tracing::error!(?e);
                        }
                    }
                }
            },
        ));
    }

    pub(crate) async fn finish(
        conductor: ConductorHandle,
        conductor_config: ConductorConfig,
        p2p_evt: holochain_p2p::event::HolochainP2pEventReceiver,
        post_commit_receiver: tokio::sync::mpsc::Receiver<PostCommitArgs>,
        no_print_setup: bool,
    ) -> ConductorResult<ConductorHandle> {
        conductor
            .clone()
            .start_scheduler(holochain_zome_types::schedule::SCHEDULER_INTERVAL)
            .await;

        tokio::task::spawn(p2p_event_task(p2p_evt, conductor.clone()));

        Self::spawn_post_commit(conductor.clone(), post_commit_receiver);

        let configs = conductor_config.admin_interfaces.unwrap_or_default();
        let cell_startup_errors = conductor.clone().initialize_conductor(configs).await?;

        // TODO: This should probably be emitted over the admin interface
        if !cell_startup_errors.is_empty() {
            error!(
                msg = "Failed to create the following active apps",
                ?cell_startup_errors
            );
        }

        if !no_print_setup {
            conductor.print_setup();
        }

        Ok(conductor)
    }

    /// Pass a test keystore in, to ensure that generated test agents
    /// are actually available for signing (especially for tryorama compat)
    pub fn with_keystore(mut self, keystore: MetaLairClient) -> Self {
        self.keystore = Some(keystore);
        self
    }

    #[cfg(any(test, feature = "test_utils"))]
    /// Sets some fake conductor state for tests
    pub fn fake_state(mut self, state: ConductorState) -> Self {
        self.state = Some(state);
        self
    }

    #[cfg(any(test, feature = "test_utils"))]
    pub(crate) async fn update_fake_state(
        state: Option<ConductorState>,
        conductor: Conductor,
    ) -> ConductorResult<Conductor> {
        if let Some(state) = state {
            conductor.update_state(move |_| Ok(state)).await?;
        }
        Ok(conductor)
    }

    /// Build a Conductor with a test environment
    #[cfg(any(test, feature = "test_utils"))]
    pub async fn test(
        mut self,
        env_path: &std::path::Path,
        extra_dnas: &[DnaFile],
    ) -> ConductorResult<ConductorHandle> {
        let keystore = self.keystore.unwrap_or_else(test_keystore);
        self.config.environment_path = env_path.to_path_buf().into();

        let spaces = Spaces::new(&self.config)?;

        let network_config = self.config.network.clone().unwrap_or_default();
        let tuning_params = network_config.tuning_params.clone();
        let strat = ArqStrat::from_params(tuning_params.gossip_redundancy_target);

        let ribosome_store = RwShare::new(self.ribosome_store);
        let host =
            KitsuneHostImpl::new(spaces.clone(), ribosome_store.clone(), tuning_params, strat);

        let (holochain_p2p, p2p_evt) =
                holochain_p2p::spawn_holochain_p2p(network_config, holochain_p2p::kitsune_p2p::dependencies::kitsune_p2p_types::tls::TlsConfig::new_ephemeral().await.unwrap(), host)
                    .await?;

        let (post_commit_sender, post_commit_receiver) =
            tokio::sync::mpsc::channel(POST_COMMIT_CHANNEL_BOUND);

        let conductor = Conductor::new(
            self.config.clone(),
            ribosome_store,
            keystore,
            holochain_p2p,
            spaces,
            post_commit_sender,
        );

        let conductor = Self::update_fake_state(self.state, conductor).await?;

        // Create handle
        let handle: ConductorHandle = Arc::new(conductor);

        // Install extra DNAs, in particular:
        // the ones with InlineZomes will not be registered in the Wasm DB
        // and cannot be automatically loaded on conductor restart.

        for dna_file in extra_dnas {
            handle
                .register_dna(dna_file.clone())
                .await
                .expect("Could not install DNA");
        }

        Self::finish(
            handle,
            self.config,
            p2p_evt,
            post_commit_receiver,
            self.no_print_setup,
        )
        .await
    }

Get the holochain conductor state

Examples found in repository?
src/conductor/conductor.rs (line 1739)
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        pub(crate) async fn get_state(&self) -> ConductorResult<ConductorState> {
            self.spaces.get_state().await
        }
More examples
Hide additional examples
src/conductor/conductor/builder.rs (line 106)
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    pub async fn build(self) -> ConductorResult<ConductorHandle> {
        tracing::info!(?self.config);

        let keystore = if let Some(keystore) = self.keystore {
            keystore
        } else {
            pub(crate) fn warn_no_encryption() {
                #[cfg(not(feature = "db-encryption"))]
                {
                    const MSG: &str = "WARNING: running without local db encryption";
                    eprintln!("{}", MSG);
                    println!("{}", MSG);
                    tracing::warn!("{}", MSG);
                }
            }
            let get_passphrase = || -> ConductorResult<sodoken::BufRead> {
                match self.passphrase {
                    None => Err(
                        one_err::OneErr::new("passphrase required for lair keystore api").into(),
                    ),
                    Some(p) => Ok(p),
                }
            };
            match &self.config.keystore {
                KeystoreConfig::DangerTestKeystore => spawn_test_keystore().await?,
                KeystoreConfig::LairServer { connection_url } => {
                    warn_no_encryption();
                    let passphrase = get_passphrase()?;
                    spawn_lair_keystore(connection_url.clone(), passphrase).await?
                }
                KeystoreConfig::LairServerInProc { lair_root } => {
                    warn_no_encryption();
                    let mut keystore_config_path = lair_root.clone().unwrap_or_else(|| {
                        let mut p: std::path::PathBuf = self.config.environment_path.clone().into();
                        p.push("keystore");
                        p
                    });
                    keystore_config_path.push("lair-keystore-config.yaml");
                    let passphrase = get_passphrase()?;
                    spawn_lair_keystore_in_proc(keystore_config_path, passphrase).await?
                }
            }
        };

        let Self {
            ribosome_store,
            config,
            ..
        } = self;

        let ribosome_store = RwShare::new(ribosome_store);

        let spaces = Spaces::new(&config)?;
        let tag = spaces.get_state().await?.tag().clone();

        let network_config = config.network.clone().unwrap_or_default();
        let (cert_digest, cert, cert_priv_key) =
            keystore.get_or_create_tls_cert_by_tag(tag.0).await?;
        let tls_config =
            holochain_p2p::kitsune_p2p::dependencies::kitsune_p2p_types::tls::TlsConfig {
                cert,
                cert_priv_key,
                cert_digest,
            };
        let strat = ArqStrat::from_params(network_config.tuning_params.gossip_redundancy_target);

        let host = KitsuneHostImpl::new(
            spaces.clone(),
            ribosome_store.clone(),
            network_config.tuning_params.clone(),
            strat,
        );

        let (holochain_p2p, p2p_evt) =
            holochain_p2p::spawn_holochain_p2p(network_config, tls_config, host).await?;

        let (post_commit_sender, post_commit_receiver) =
            tokio::sync::mpsc::channel(POST_COMMIT_CHANNEL_BOUND);

        let conductor = Conductor::new(
            config.clone(),
            ribosome_store,
            keystore,
            holochain_p2p,
            spaces,
            post_commit_sender,
        );

        let shutting_down = conductor.shutting_down.clone();

        #[cfg(any(test, feature = "test_utils"))]
        let conductor = Self::update_fake_state(self.state, conductor).await?;

        // Create handle
        let handle: ConductorHandle = Arc::new(conductor);

        {
            let handle = handle.clone();
            tokio::task::spawn(async move {
                while !shutting_down.load(std::sync::atomic::Ordering::Relaxed) {
                    tokio::time::sleep(std::time::Duration::from_secs(60)).await;
                    if let Err(e) = handle.prune_p2p_agents_db().await {
                        tracing::error!("failed to prune p2p_agents_db: {:?}", e);
                    }
                }
            });
        }

        Self::finish(
            handle,
            config,
            p2p_evt,
            post_commit_receiver,
            self.no_print_setup,
        )
        .await
    }

Update the internal state with a pure function mapping old state to new

Examples found in repository?
src/conductor/conductor.rs (line 1747)
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        pub(crate) async fn update_state<F: Send>(&self, f: F) -> ConductorResult<ConductorState>
        where
            F: FnOnce(ConductorState) -> ConductorResult<ConductorState> + 'static,
        {
            self.spaces.update_state(f).await
        }
More examples
Hide additional examples
src/conductor/space.rs (line 188)
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    pub async fn get_state(&self) -> ConductorResult<ConductorState> {
        let state = self
            .conductor_db
            .async_reader(|txn| {
                let state = txn
                    .query_row("SELECT blob FROM ConductorState WHERE id = 1", [], |row| {
                        row.get("blob")
                    })
                    .optional()?;
                match state {
                    Some(state) => ConductorResult::Ok(Some(from_blob(state)?)),
                    None => ConductorResult::Ok(None),
                }
            })
            .await?;

        match state {
            Some(state) => Ok(state),
            // update_state will again try to read the state. It's a little
            // inefficient in the infrequent case where we haven't saved the
            // state yet, but more atomic, so worth it.
            None => self.update_state(Ok).await,
        }
    }

Update the internal state with a pure function mapping old state to new, which may also produce an output value which will be the output of this function

Examples found in repository?
src/conductor/space.rs (line 197)
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    pub async fn update_state<F: Send>(&self, f: F) -> ConductorResult<ConductorState>
    where
        F: FnOnce(ConductorState) -> ConductorResult<ConductorState> + 'static,
    {
        let (state, _) = self.update_state_prime(|s| Ok((f(s)?, ()))).await?;
        Ok(state)
    }
More examples
Hide additional examples
src/conductor/conductor.rs (line 1762)
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        pub(crate) async fn update_state_prime<F, O>(
            &self,
            f: F,
        ) -> ConductorResult<(ConductorState, O)>
        where
            F: FnOnce(ConductorState) -> ConductorResult<(ConductorState, O)> + Send + 'static,
            O: Send + 'static,
        {
            self.check_running()?;
            self.spaces.update_state_prime(f).await
        }

Get something from every space

Examples found in repository?
src/sweettest/sweet_conductor.rs (line 475)
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    pub async fn exchange_peer_info(conductors: impl IntoIterator<Item = &Self>) {
        let mut all = Vec::new();
        for c in conductors.into_iter() {
            for env in c.spaces.get_from_spaces(|s| s.p2p_agents_db.clone()) {
                all.push(env.clone());
            }
        }
        crate::conductor::p2p_agent_store::exchange_peer_info(all).await;
    }

    /// Let each conductor know about each others' agents so they can do networking
    pub async fn exchange_peer_info_sampled(
        conductors: impl IntoIterator<Item = &Self>,
        rng: &mut StdRng,
        s: usize,
    ) {
        let mut all = Vec::new();
        for c in conductors.into_iter() {
            for env in c.spaces.get_from_spaces(|s| s.p2p_agents_db.clone()) {
                all.push(env.clone());
            }
        }
        let connectivity = covering(rng, all.len(), s);
        crate::conductor::p2p_agent_store::exchange_peer_info_sparse(all, connectivity).await;
    }
More examples
Hide additional examples
src/sweettest/sweet_conductor_batch.rs (line 139)
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    pub async fn reveal_peer_info(&self, observer: usize, seen: usize) {
        let observer_conductor = &self.0[observer];
        let mut observer_envs = Vec::new();
        for env in observer_conductor
            .spaces
            .get_from_spaces(|s| s.p2p_agents_db.clone())
        {
            observer_envs.push(env.clone());
        }

        let seen_conductor = &self.0[seen];
        let mut seen_envs = Vec::new();
        for env in seen_conductor
            .spaces
            .get_from_spaces(|s| s.p2p_agents_db.clone())
        {
            seen_envs.push(env.clone());
        }

        crate::conductor::p2p_agent_store::reveal_peer_info(observer_envs, seen_envs).await;
    }
src/conductor/conductor.rs (line 811)
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        pub async fn get_agent_infos(
            &self,
            cell_id: Option<CellId>,
        ) -> ConductorApiResult<Vec<AgentInfoSigned>> {
            match cell_id {
                Some(c) => {
                    let (d, a) = c.into_dna_and_agent();
                    let db = self.p2p_agents_db(&d);
                    Ok(get_single_agent_info(db.into(), d, a)
                        .await?
                        .map(|a| vec![a])
                        .unwrap_or_default())
                }
                None => {
                    let mut out = Vec::new();
                    // collecting so the mutex lock can close
                    let envs = self.spaces.get_from_spaces(|s| s.p2p_agents_db.clone());
                    for db in envs {
                        out.append(&mut all_agent_infos(db.into()).await?);
                    }
                    Ok(out)
                }
            }
        }

Get the space if it exists or create it if it doesn’t.

Examples found in repository?
src/conductor/conductor.rs (line 2063)
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        pub(crate) fn get_or_create_space(&self, dna_hash: &DnaHash) -> ConductorResult<Space> {
            self.spaces.get_or_create_space(dna_hash)
        }
More examples
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src/sweettest/sweet_conductor.rs (line 251)
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    async fn setup_app_3_create_sweet_app(
        &self,
        installed_app_id: &str,
        agent: AgentPubKey,
        dna_hashes: impl Iterator<Item = DnaHash>,
    ) -> ConductorApiResult<SweetApp> {
        let mut sweet_cells = Vec::new();
        for dna_hash in dna_hashes {
            // Initialize per-space databases
            let _space = self.spaces.get_or_create_space(&dna_hash)?;

            // Create and add the SweetCell
            sweet_cells.push(self.get_sweet_cell(CellId::new(dna_hash, agent.clone()))?);
        }

        Ok(SweetApp::new(installed_app_id.into(), sweet_cells))
    }

Get the cache database (this will create the space if it doesn’t already exist).

Get the authored database (this will create the space if it doesn’t already exist).

Examples found in repository?
src/conductor/conductor.rs (line 2070)
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        pub(crate) fn get_or_create_authored_db(
            &self,
            dna_hash: &DnaHash,
        ) -> ConductorResult<DbWrite<DbKindAuthored>> {
            self.spaces.authored_db(dna_hash)
        }

Get the dht database (this will create the space if it doesn’t already exist).

Examples found in repository?
src/conductor/conductor.rs (line 2077)
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        pub(crate) fn get_or_create_dht_db(
            &self,
            dna_hash: &DnaHash,
        ) -> ConductorResult<DbWrite<DbKindDht>> {
            self.spaces.dht_db(dna_hash)
        }
More examples
Hide additional examples
src/conductor/kitsune_host_impl.rs (line 115)
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    fn query_region_set(
        &self,
        space: Arc<kitsune_p2p::KitsuneSpace>,
        dht_arc_set: Arc<holochain_p2p::dht_arc::DhtArcSet>,
    ) -> KitsuneHostResult<holochain_p2p::dht::region_set::RegionSetLtcs> {
        let dna_hash = DnaHash::from_kitsune(&space);
        async move {
            let topology = self.get_topology(space.clone()).await?;
            let db = self.spaces.dht_db(&dna_hash)?;
            let region_set =
                query_region_set::query_region_set(db, topology.clone(), &self.strat, dht_arc_set)
                    .await?;
            Ok(region_set)
        }
        .boxed()
        .into()
    }

    fn query_size_limited_regions(
        &self,
        space: Arc<kitsune_p2p::KitsuneSpace>,
        size_limit: u32,
        regions: Vec<holochain_p2p::dht::region::Region>,
    ) -> KitsuneHostResult<Vec<holochain_p2p::dht::region::Region>> {
        let dna_hash = DnaHash::from_kitsune(&space);
        async move {
            let topology = self.get_topology(space).await?;
            let db = self.spaces.dht_db(&dna_hash)?;
            Ok(query_size_limited_regions::query_size_limited_regions(
                db, topology, regions, size_limit,
            )
            .await?)
        }
        .boxed()
        .into()
    }

    fn query_op_hashes_by_region(
        &self,
        space: Arc<kitsune_p2p::KitsuneSpace>,
        region: holochain_p2p::dht::region::RegionCoords,
    ) -> KitsuneHostResult<Vec<OpHashSized>> {
        let dna_hash = DnaHash::from_kitsune(&space);
        async move {
            let db = self.spaces.dht_db(&dna_hash)?;
            let topology = self.get_topology(space).await?;
            let bounds = region.to_bounds(&topology);
            Ok(query_region_op_hashes::query_region_op_hashes(db.clone(), bounds).await?)
        }
        .boxed()
        .into()
    }

    fn get_topology(&self, space: Arc<kitsune_p2p::KitsuneSpace>) -> KitsuneHostResult<Topology> {
        let dna_hash = DnaHash::from_kitsune(&space);
        let dna_def = self
            .ribosome_store
            .share_mut(|ds| ds.get_dna_def(&dna_hash))
            .ok_or(DnaError::DnaMissing(dna_hash));
        let cutoff = self.tuning_params.danger_gossip_recent_threshold();
        async move { Ok(dna_def?.topology(cutoff)) }.boxed().into()
    }

    fn op_hash(&self, op_data: KOpData) -> KitsuneHostResult<KOpHash> {
        use holochain_p2p::DhtOpHashExt;

        async move {
            let op = holochain_p2p::WireDhtOpData::decode(op_data.0.clone())?;

            let op_hash = DhtOpHash::with_data_sync(&op.op_data).into_kitsune();

            Ok(op_hash)
        }
        .boxed()
        .into()
    }

    fn check_op_data(
        &self,
        space: Arc<kitsune_p2p::KitsuneSpace>,
        op_hash_list: Vec<KOpHash>,
        context: Option<kitsune_p2p::dependencies::kitsune_p2p_fetch::FetchContext>,
    ) -> KitsuneHostResult<Vec<bool>> {
        use holochain_p2p::{DhtOpHashExt, FetchContextExt};
        use rusqlite::ToSql;

        async move {
            let db = self.spaces.dht_db(&DnaHash::from_kitsune(&space))?;
            let results = db
                .async_commit(move |txn| {
                    let mut out = Vec::new();
                    for op_hash in op_hash_list {
                        let op_hash = DhtOpHash::from_kitsune(&op_hash);
                        match txn.query_row(
                            "SELECT 1 FROM DhtOp WHERE hash = ?",
                            [&op_hash],
                            |_row| Ok(()),
                        ) {
                            Ok(_) => {
                                // might be tempted to remove this given we
                                // are currently reflecting publishes,
                                // but we still need this for the delegate
                                // broadcast case.
                                if let Some(context) = context {
                                    if context.has_request_validation_receipt() {
                                        txn.execute(
                                            "UPDATE DhtOp SET require_receipt = ? WHERE DhtOp.hash = ?",
                                            [&true as &dyn ToSql, &op_hash as &dyn ToSql],
                                        )?;
                                    }
                                }
                                out.push(true)
                            }
                            Err(_) => out.push(false),
                        }
                    }
                    holochain_sqlite::prelude::DatabaseResult::Ok(out)
                })
                .await?;

            Ok(results)
        }
        .boxed()
        .into()
    }
src/conductor/space.rs (line 422)
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    pub async fn handle_fetch_op_regions(
        &self,
        dna_hash: &DnaHash,
        topology: Topology,
        dht_arc_set: DhtArcSet,
    ) -> ConductorResult<RegionSetLtcs> {
        let sql = holochain_sqlite::sql::sql_cell::FETCH_OP_REGION;
        let max_chunks = ArqStrat::default().max_chunks();
        let arq_set = ArqBoundsSet::new(
            dht_arc_set
                .intervals()
                .into_iter()
                .map(|i| {
                    let len = i.length();
                    let (pow, _) = power_and_count_from_length(&topology.space, len, max_chunks);
                    ArqBounds::from_interval_rounded(&topology, pow, i).0
                })
                .collect(),
        );
        let times = TelescopingTimes::historical(&topology);
        let coords = RegionCoordSetLtcs::new(times, arq_set);
        let coords_clone = coords.clone();
        let db = self.dht_db(dna_hash)?;
        db.async_reader(move |txn| {
            let mut stmt = txn.prepare_cached(sql).map_err(DatabaseError::from)?;
            Ok(coords_clone.into_region_set(|(_, coords)| {
                let bounds = coords.to_bounds(&topology);
                let (x0, x1) = bounds.x;
                let (t0, t1) = bounds.t;
                stmt.query_row(
                    named_params! {
                        ":storage_start_loc": x0,
                        ":storage_end_loc": x1,
                        ":timestamp_min": t0,
                        ":timestamp_max": t1,
                    },
                    |row| {
                        let total_action_size: f64 = row.get("total_action_size")?;
                        let total_entry_size: f64 = row.get("total_entry_size")?;
                        let size = total_action_size + total_entry_size;
                        Ok(RegionData {
                            hash: RegionHash::from_vec(row.get("xor_hash")?)
                                .expect("region hash must be 32 bytes"),
                            size: size.min(u32::MAX as f64) as u32,
                            count: row.get("count")?,
                        })
                    },
                )
            })?)
        })
        .await
    }

Get the peer database (this will create the space if it doesn’t already exist).

Examples found in repository?
src/conductor/kitsune_host_impl.rs (line 60)
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    fn peer_extrapolated_coverage(
        &self,
        space: std::sync::Arc<kitsune_p2p::KitsuneSpace>,
        dht_arc_set: holochain_p2p::dht_arc::DhtArcSet,
    ) -> KitsuneHostResult<Vec<f64>> {
        async move {
            let db = self.spaces.p2p_agents_db(&DnaHash::from_kitsune(&space))?;
            use holochain_sqlite::db::AsP2pAgentStoreConExt;
            let permit = db.conn_permit().await;
            let task = tokio::task::spawn_blocking(move || {
                let mut conn = db.with_permit(permit)?;
                conn.p2p_extrapolated_coverage(dht_arc_set)
            })
            .await;
            Ok(task??)
        }
        .boxed()
        .into()
    }

    fn record_metrics(
        &self,
        space: std::sync::Arc<kitsune_p2p::KitsuneSpace>,
        records: Vec<kitsune_p2p::event::MetricRecord>,
    ) -> KitsuneHostResult<()> {
        async move {
            let db = self.spaces.p2p_metrics_db(&DnaHash::from_kitsune(&space))?;
            use holochain_sqlite::db::AsP2pMetricStoreConExt;
            let permit = db.conn_permit().await;
            let task = tokio::task::spawn_blocking(move || {
                let mut conn = db.with_permit(permit)?;
                conn.p2p_log_metrics(records)
            })
            .await;
            Ok(task??)
        }
        .boxed()
        .into()
    }

    fn get_agent_info_signed(
        &self,
        GetAgentInfoSignedEvt { space, agent }: GetAgentInfoSignedEvt,
    ) -> KitsuneHostResult<Option<AgentInfoSigned>> {
        let dna_hash = DnaHash::from_kitsune(&space);
        let db = self.spaces.p2p_agents_db(&dna_hash);
        async move {
            Ok(super::p2p_agent_store::get_agent_info_signed(db?.into(), space, agent).await?)
        }
        .boxed()
        .into()
    }
More examples
Hide additional examples
src/conductor/conductor.rs (line 835)
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        pub(crate) async fn prune_p2p_agents_db(&self) -> ConductorResult<()> {
            use holochain_p2p::AgentPubKeyExt;

            let mut space_to_agents = HashMap::new();

            for cell in self.running_cells.share_ref(|c| {
                <Result<_, one_err::OneErr>>::Ok(c.keys().cloned().collect::<Vec<_>>())
            })? {
                space_to_agents
                    .entry(cell.dna_hash().clone())
                    .or_insert_with(Vec::new)
                    .push(cell.agent_pubkey().to_kitsune());
            }

            for (space, agents) in space_to_agents {
                let db = self.spaces.p2p_agents_db(&space)?;
                p2p_prune(&db, agents).await?;
            }

            Ok(())
        }

        pub(crate) async fn network_info(
            &self,
            dnas: &[DnaHash],
        ) -> ConductorResult<Vec<NetworkInfo>> {
            futures::future::join_all(dnas.iter().map(|dna| async move {
                let d = self.holochain_p2p.get_diagnostics(dna.clone()).await?;
                let fetch_queue_info = d.fetch_queue.info([dna.to_kitsune()].into_iter().collect());
                ConductorResult::Ok(NetworkInfo { fetch_queue_info })
            }))
            .await
            .into_iter()
            .collect::<Result<Vec<_>, _>>()
        }

        #[instrument(skip(self))]
        pub(crate) async fn dispatch_holochain_p2p_event(
            &self,
            event: holochain_p2p::event::HolochainP2pEvent,
        ) -> ConductorApiResult<()> {
            use HolochainP2pEvent::*;
            let dna_hash = event.dna_hash().clone();
            trace!(dispatch_event = ?event);
            match event {
                PutAgentInfoSigned {
                    peer_data, respond, ..
                } => {
                    let sender = self.p2p_batch_sender(&dna_hash);
                    let (result_sender, response) = tokio::sync::oneshot::channel();
                    let _ = sender
                        .send(P2pBatch {
                            peer_data,
                            result_sender,
                        })
                        .await;
                    let res = match response.await {
                        Ok(r) => r.map_err(holochain_p2p::HolochainP2pError::other),
                        Err(e) => Err(holochain_p2p::HolochainP2pError::other(e)),
                    };
                    respond.respond(Ok(async move { res }.boxed().into()));
                }
                QueryAgentInfoSigned {
                    kitsune_space,
                    agents,
                    respond,
                    ..
                } => {
                    let db = { self.p2p_agents_db(&dna_hash) };
                    let res = list_all_agent_info(db.into(), kitsune_space)
                        .await
                        .map(|infos| match agents {
                            Some(agents) => infos
                                .into_iter()
                                .filter(|info| agents.contains(&info.agent))
                                .collect(),
                            None => infos,
                        })
                        .map_err(holochain_p2p::HolochainP2pError::other);
                    respond.respond(Ok(async move { res }.boxed().into()));
                }
                QueryGossipAgents {
                    since_ms,
                    until_ms,
                    arc_set,
                    respond,
                    ..
                } => {
                    use holochain_sqlite::db::AsP2pAgentStoreConExt;
                    let db = { self.p2p_agents_db(&dna_hash) };
                    let permit = db.conn_permit().await;
                    let res = tokio::task::spawn_blocking(move || {
                        let mut conn = db.with_permit(permit)?;
                        conn.p2p_gossip_query_agents(since_ms, until_ms, (*arc_set).clone())
                    })
                    .await;
                    let res = res
                        .map_err(holochain_p2p::HolochainP2pError::other)
                        .and_then(|r| r.map_err(holochain_p2p::HolochainP2pError::other));
                    respond.respond(Ok(async move { res }.boxed().into()));
                }
                QueryAgentInfoSignedNearBasis {
                    kitsune_space,
                    basis_loc,
                    limit,
                    respond,
                    ..
                } => {
                    let db = { self.p2p_agents_db(&dna_hash) };
                    let res = list_all_agent_info_signed_near_basis(
                        db.into(),
                        kitsune_space,
                        basis_loc,
                        limit,
                    )
                    .await
                    .map_err(holochain_p2p::HolochainP2pError::other);
                    respond.respond(Ok(async move { res }.boxed().into()));
                }
                QueryPeerDensity {
                    kitsune_space,
                    dht_arc,
                    respond,
                    ..
                } => {
                    let cutoff = self
                        .get_config()
                        .network
                        .clone()
                        .unwrap_or_default()
                        .tuning_params
                        .danger_gossip_recent_threshold();
                    let topo = self
                        .get_dna_def(&dna_hash)
                        .ok_or_else(|| DnaError::DnaMissing(dna_hash.clone()))?
                        .topology(cutoff);
                    let db = { self.p2p_agents_db(&dna_hash) };
                    let res = query_peer_density(db.into(), topo, kitsune_space, dht_arc)
                        .await
                        .map_err(holochain_p2p::HolochainP2pError::other);
                    respond.respond(Ok(async move { res }.boxed().into()));
                }
                SignNetworkData {
                    respond,
                    to_agent,
                    data,
                    ..
                } => {
                    let signature = to_agent.sign_raw(self.keystore(), data.into()).await?;
                    respond.respond(Ok(async move { Ok(signature) }.boxed().into()));
                }
                HolochainP2pEvent::CallRemote { .. }
                | CountersigningSessionNegotiation { .. }
                | Get { .. }
                | GetMeta { .. }
                | GetLinks { .. }
                | GetAgentActivity { .. }
                | MustGetAgentActivity { .. }
                | ValidationReceiptReceived { .. } => {
                    let cell_id =
                        CellId::new(event.dna_hash().clone(), event.target_agents().clone());
                    let cell = self.cell_by_id(&cell_id)?;
                    cell.handle_holochain_p2p_event(event).await?;
                }
                Publish {
                    dna_hash,
                    respond,
                    request_validation_receipt,
                    countersigning_session,
                    ops,
                    ..
                } => {
                    async {
                        let res = self
                            .spaces
                            .handle_publish(
                                &dna_hash,
                                request_validation_receipt,
                                countersigning_session,
                                ops,
                            )
                            .await
                            .map_err(holochain_p2p::HolochainP2pError::other);
                        respond.respond(Ok(async move { res }.boxed().into()));
                    }
                    .instrument(debug_span!("handle_publish"))
                    .await;
                }
                FetchOpData {
                    respond,
                    query,
                    dna_hash,
                    ..
                } => {
                    async {
                        let res = self
                            .spaces
                            .handle_fetch_op_data(&dna_hash, query)
                            .await
                            .map_err(holochain_p2p::HolochainP2pError::other);
                        respond.respond(Ok(async move { res }.boxed().into()));
                    }
                    .instrument(debug_span!("handle_fetch_op_data"))
                    .await;
                }

                HolochainP2pEvent::QueryOpHashes {
                    dna_hash,
                    window,
                    max_ops,
                    include_limbo,
                    arc_set,
                    respond,
                    ..
                } => {
                    let res = self
                        .spaces
                        .handle_query_op_hashes(&dna_hash, arc_set, window, max_ops, include_limbo)
                        .await
                        .map_err(holochain_p2p::HolochainP2pError::other);

                    respond.respond(Ok(async move { res }.boxed().into()));
                }
            }
            Ok(())
        }

        /// Invoke a zome function on a Cell
        pub async fn call_zome(&self, call: ZomeCall) -> ConductorApiResult<ZomeCallResult> {
            let cell = self.cell_by_id(&call.cell_id)?;
            Ok(cell.call_zome(call, None).await?)
        }

        pub(crate) async fn call_zome_with_workspace(
            &self,
            call: ZomeCall,
            workspace_lock: SourceChainWorkspace,
        ) -> ConductorApiResult<ZomeCallResult> {
            debug!(cell_id = ?call.cell_id);
            let cell = self.cell_by_id(&call.cell_id)?;
            Ok(cell.call_zome(call, Some(workspace_lock)).await?)
        }
    }
}

/// Methods related to app installation and management
mod app_impls {

    use super::*;
    impl Conductor {
        pub(crate) async fn install_app(
            self: Arc<Self>,
            installed_app_id: InstalledAppId,
            cell_data: Vec<(InstalledCell, Option<MembraneProof>)>,
        ) -> ConductorResult<()> {
            crate::conductor::conductor::genesis_cells(
                self.clone(),
                cell_data
                    .iter()
                    .map(|(c, p)| (c.as_id().clone(), p.clone()))
                    .collect(),
            )
            .await?;

            let cell_data = cell_data.into_iter().map(|(c, _)| c);
            let app = InstalledAppCommon::new_legacy(installed_app_id, cell_data)?;

            // Update the db
            let _ = self.add_disabled_app_to_db(app).await?;

            Ok(())
        }

        /// Install DNAs and set up Cells as specified by an AppBundle
        pub async fn install_app_bundle(
            self: Arc<Self>,
            payload: InstallAppPayload,
        ) -> ConductorResult<StoppedApp> {
            let InstallAppPayload {
                source,
                agent_key,
                installed_app_id,
                membrane_proofs,
                network_seed,
            } = payload;

            let bundle: AppBundle = {
                let original_bundle = source.resolve().await?;
                if let Some(network_seed) = network_seed {
                    let mut manifest = original_bundle.manifest().to_owned();
                    manifest.set_network_seed(network_seed);
                    AppBundle::from(original_bundle.into_inner().update_manifest(manifest)?)
                } else {
                    original_bundle
                }
            };

            let installed_app_id =
                installed_app_id.unwrap_or_else(|| bundle.manifest().app_name().to_owned());
            let ops = bundle
                .resolve_cells(agent_key.clone(), DnaGamut::placeholder(), membrane_proofs)
                .await?;

            let cells_to_create = ops.cells_to_create();

            for (dna, _) in ops.dnas_to_register {
                self.clone().register_dna(dna).await?;
            }

            crate::conductor::conductor::genesis_cells(self.clone(), cells_to_create).await?;

            let roles = ops.role_assignments;
            let app = InstalledAppCommon::new(installed_app_id, agent_key, roles)?;

            // Update the db
            let stopped_app = self.add_disabled_app_to_db(app).await?;

            Ok(stopped_app)
        }

        /// Uninstall an app
        #[tracing::instrument(skip(self))]
        pub async fn uninstall_app(
            self: Arc<Self>,
            installed_app_id: &InstalledAppId,
        ) -> ConductorResult<()> {
            let self_clone = self.clone();
            let app = self.remove_app_from_db(installed_app_id).await?;
            tracing::debug!(msg = "Removed app from db.", app = ?app);

            // Remove cells which may now be dangling due to the removed app
            self_clone
                .process_app_status_fx(AppStatusFx::SpinDown, None)
                .await?;
            Ok(())
        }

        /// List active AppIds
        pub async fn list_running_apps(&self) -> ConductorResult<Vec<InstalledAppId>> {
            let state = self.get_state().await?;
            Ok(state.running_apps().map(|(id, _)| id).cloned().collect())
        }

        /// List Apps with their information
        pub async fn list_apps(
            &self,
            status_filter: Option<AppStatusFilter>,
        ) -> ConductorResult<Vec<AppInfo>> {
            use AppStatusFilter::*;
            let conductor_state = self.get_state().await?;

            let apps_ids: Vec<&String> = match status_filter {
                Some(Enabled) => conductor_state.enabled_apps().map(|(id, _)| id).collect(),
                Some(Disabled) => conductor_state.disabled_apps().map(|(id, _)| id).collect(),
                Some(Running) => conductor_state.running_apps().map(|(id, _)| id).collect(),
                Some(Stopped) => conductor_state.stopped_apps().map(|(id, _)| id).collect(),
                Some(Paused) => conductor_state.paused_apps().map(|(id, _)| id).collect(),
                None => conductor_state.installed_apps().keys().collect(),
            };

            let app_infos: Vec<AppInfo> = apps_ids
                .into_iter()
                .map(|app_id| self.get_app_info_inner(app_id, &conductor_state))
                .collect::<Result<Vec<_>, _>>()?
                .into_iter()
                .flatten()
                .collect();

            Ok(app_infos)
        }

        /// Get the IDs of all active installed Apps which use this Cell
        pub async fn list_running_apps_for_dependent_cell_id(
            &self,
            cell_id: &CellId,
        ) -> ConductorResult<HashSet<InstalledAppId>> {
            Ok(self
                .get_state()
                .await?
                .running_apps()
                .filter(|(_, v)| v.all_cells().any(|i| i == cell_id))
                .map(|(k, _)| k)
                .cloned()
                .collect())
        }

        /// Find the ID of the first active installed App which uses this Cell
        pub async fn find_cell_with_role_alongside_cell(
            &self,
            cell_id: &CellId,
            role_name: &RoleName,
        ) -> ConductorResult<Option<CellId>> {
            Ok(self
                .get_state()
                .await?
                .running_apps()
                .find(|(_, running_app)| running_app.all_cells().any(|i| i == cell_id))
                .and_then(|(_, running_app)| {
                    running_app
                        .into_common()
                        .role(role_name)
                        .ok()
                        .map(|role| role.cell_id())
                        .cloned()
                }))
        }

        /// Get the IDs of all active installed Apps which use this Dna
        pub async fn list_running_apps_for_dependent_dna_hash(
            &self,
            dna_hash: &DnaHash,
        ) -> ConductorResult<HashSet<InstalledAppId>> {
            Ok(self
                .get_state()
                .await?
                .running_apps()
                .filter(|(_, v)| v.all_cells().any(|i| i.dna_hash() == dna_hash))
                .map(|(k, _)| k)
                .cloned()
                .collect())
        }

        /// Get info about an installed App, regardless of status
        pub async fn get_app_info(
            &self,
            installed_app_id: &InstalledAppId,
        ) -> ConductorResult<Option<AppInfo>> {
            let state = self.get_state().await?;
            let maybe_app_info = self.get_app_info_inner(installed_app_id, &state)?;
            Ok(maybe_app_info)
        }

        fn get_app_info_inner(
            &self,
            app_id: &InstalledAppId,
            state: &ConductorState,
        ) -> ConductorResult<Option<AppInfo>> {
            match state.installed_apps().get(app_id) {
                None => Ok(None),
                Some(app) => {
                    let dna_definitions = self.get_dna_definitions(app)?;
                    Ok(Some(AppInfo::from_installed_app(app, &dna_definitions)))
                }
            }
        }
    }
}

/// Methods related to cell access
mod cell_impls {
    use super::*;
    impl Conductor {
        pub(crate) fn cell_by_id(&self, cell_id: &CellId) -> ConductorResult<Arc<Cell>> {
            let cell = self
                .running_cells
                .share_ref(|c| c.get(cell_id).map(|i| i.cell.clone()))
                .ok_or_else(|| ConductorError::CellMissing(cell_id.clone()))?;
            Ok(cell)
        }

        /// Iterator over only the cells which are fully running. Generally used
        /// to handle conductor interface requests
        pub fn running_cell_ids(&self) -> HashSet<CellId> {
            self.running_cells.share_ref(|c| {
                c.iter()
                    .filter_map(|(id, item)| {
                        if item.is_running() {
                            Some(id.clone())
                        } else {
                            None
                        }
                    })
                    .collect()
            })
        }

        /// List CellIds for Cells which match a status filter
        pub fn list_cell_ids(&self, filter: Option<CellStatusFilter>) -> Vec<CellId> {
            self.running_cells.share_ref(|cells| {
                cells
                    .iter()
                    .filter_map(|(id, cell)| {
                        let matches = filter
                            .as_ref()
                            .map(|status| cell.status == *status)
                            .unwrap_or(true);
                        if matches {
                            Some(id)
                        } else {
                            None
                        }
                    })
                    .cloned()
                    .collect()
            })
        }
    }
}

/// Methods related to clone cell management
mod clone_cell_impls {
    use super::*;

    impl Conductor {
        /// Create a new cell in an existing app based on an existing DNA.
        ///
        /// # Returns
        ///
        /// A struct with the created cell's clone id and cell id.
        pub async fn create_clone_cell(
            self: Arc<Self>,
            payload: CreateCloneCellPayload,
        ) -> ConductorResult<InstalledCell> {
            let CreateCloneCellPayload {
                app_id,
                role_name,
                modifiers,
                membrane_proof,
                name,
            } = payload;
            if !modifiers.has_some_option_set() {
                return Err(ConductorError::CloneCellError(
                    "neither network_seed nor properties nor origin_time provided for clone cell"
                        .to_string(),
                ));
            }
            let state = self.get_state().await?;
            let app = state.get_app(&app_id)?;
            app.provisioned_cells()
                .find(|(app_role_name, _)| **app_role_name == role_name)
                .ok_or_else(|| {
                    ConductorError::CloneCellError(
                        "no base cell found for provided role id".to_string(),
                    )
                })?;

            // add cell to app
            let installed_clone_cell = self
                .add_clone_cell_to_app(
                    app_id.clone(),
                    role_name.clone(),
                    modifiers.serialized()?,
                    name,
                )
                .await?;

            // run genesis on cloned cell
            let cells = vec![(installed_clone_cell.as_id().clone(), membrane_proof)];
            crate::conductor::conductor::genesis_cells(self.clone(), cells).await?;
            self.create_and_add_initialized_cells_for_running_apps(Some(&app_id))
                .await?;
            Ok(installed_clone_cell)
        }

        /// Disable a clone cell.
        pub(crate) async fn disable_clone_cell(
            &self,
            DisableCloneCellPayload {
                app_id,
                clone_cell_id,
            }: &DisableCloneCellPayload,
        ) -> ConductorResult<()> {
            let (_, removed_cell_id) = self
                .update_state_prime({
                    let app_id = app_id.to_owned();
                    let clone_cell_id = clone_cell_id.to_owned();
                    move |mut state| {
                        let app = state.get_app_mut(&app_id)?;
                        let clone_id = app.get_clone_id(&clone_cell_id)?;
                        let cell_id = app.get_clone_cell_id(&clone_cell_id)?;
                        app.disable_clone_cell(&clone_id)?;
                        Ok((state, cell_id))
                    }
                })
                .await?;
            self.remove_cells(&[removed_cell_id]).await;
            Ok(())
        }

        /// Enable a disabled clone cell.
        pub async fn enable_clone_cell(
            self: Arc<Self>,
            payload: &EnableCloneCellPayload,
        ) -> ConductorResult<InstalledCell> {
            let (_, enabled_cell) = self
                .update_state_prime({
                    let app_id = payload.app_id.to_owned();
                    let clone_cell_id = payload.clone_cell_id.to_owned();
                    move |mut state| {
                        let app = state.get_app_mut(&app_id)?;
                        let clone_id = app.get_disabled_clone_id(&clone_cell_id)?;
                        let enabled_cell = app.enable_clone_cell(&clone_id)?;
                        Ok((state, enabled_cell))
                    }
                })
                .await?;

            self.create_and_add_initialized_cells_for_running_apps(Some(&payload.app_id))
                .await?;
            Ok(enabled_cell)
        }

        /// Delete a clone cell.
        pub(crate) async fn delete_clone_cell(
            &self,
            DeleteCloneCellPayload {
                app_id,
                clone_cell_id,
            }: &DeleteCloneCellPayload,
        ) -> ConductorResult<()> {
            self.update_state_prime({
                let app_id = app_id.clone();
                let clone_cell_id = clone_cell_id.clone();
                move |mut state| {
                    let app = state.get_app_mut(&app_id)?;
                    let clone_id = app.get_disabled_clone_id(&clone_cell_id)?;
                    app.delete_clone_cell(&clone_id)?;
                    Ok((state, ()))
                }
            })
            .await?;
            self.remove_dangling_cells().await?;
            Ok(())
        }
    }
}

/// Methods related to management of app and cell status
mod app_status_impls {
    use super::*;

    impl Conductor {
        /// Adjust which cells are present in the Conductor (adding and removing as
        /// needed) to match the current reality of all app statuses.
        /// - If a Cell is used by at least one Running app, then ensure it is added
        /// - If a Cell is used by no running apps, then ensure it is removed.
        #[tracing::instrument(skip(self))]
        pub async fn reconcile_cell_status_with_app_status(
            self: Arc<Self>,
        ) -> ConductorResult<CellStartupErrors> {
            self.remove_dangling_cells().await?;

            let results = self
                .create_and_add_initialized_cells_for_running_apps(None)
                .await?;
            Ok(results)
        }

        /// Enable an app
        #[tracing::instrument(skip(self))]
        pub async fn enable_app(
            self: Arc<Self>,
            app_id: InstalledAppId,
        ) -> ConductorResult<(InstalledApp, CellStartupErrors)> {
            let (app, delta) = self
                .transition_app_status(app_id.clone(), AppStatusTransition::Enable)
                .await?;
            let errors = self
                .process_app_status_fx(delta, Some(vec![app_id.to_owned()].into_iter().collect()))
                .await?;
            Ok((app, errors))
        }

        /// Disable an app
        #[tracing::instrument(skip(self))]
        pub async fn disable_app(
            self: Arc<Self>,
            app_id: InstalledAppId,
            reason: DisabledAppReason,
        ) -> ConductorResult<InstalledApp> {
            let (app, delta) = self
                .transition_app_status(app_id.clone(), AppStatusTransition::Disable(reason))
                .await?;
            self.process_app_status_fx(delta, Some(vec![app_id.to_owned()].into_iter().collect()))
                .await?;
            Ok(app)
        }

        /// Start an app
        #[tracing::instrument(skip(self))]
        pub async fn start_app(
            self: Arc<Self>,
            app_id: InstalledAppId,
        ) -> ConductorResult<InstalledApp> {
            let (app, delta) = self
                .transition_app_status(app_id.clone(), AppStatusTransition::Start)
                .await?;
            self.process_app_status_fx(delta, Some(vec![app_id.to_owned()].into_iter().collect()))
                .await?;
            Ok(app)
        }

        /// Register an app as disabled in the database
        pub(crate) async fn add_disabled_app_to_db(
            &self,
            app: InstalledAppCommon,
        ) -> ConductorResult<StoppedApp> {
            let (_, stopped_app) = self
                .update_state_prime(move |mut state| {
                    let stopped_app = state.add_app(app)?;
                    Ok((state, stopped_app))
                })
                .await?;
            Ok(stopped_app)
        }

        /// Transition an app's status to a new state.
        #[tracing::instrument(skip(self))]
        pub(crate) async fn transition_app_status(
            &self,
            app_id: InstalledAppId,
            transition: AppStatusTransition,
        ) -> ConductorResult<(InstalledApp, AppStatusFx)> {
            Ok(self
                .update_state_prime(move |mut state| {
                    let (app, delta) = state.transition_app_status(&app_id, transition)?.clone();
                    let app = app.clone();
                    Ok((state, (app, delta)))
                })
                .await?
                .1)
        }

        /// Pause an app
        #[tracing::instrument(skip(self))]
        #[cfg(any(test, feature = "test_utils"))]
        pub async fn pause_app(
            self: Arc<Self>,
            app_id: InstalledAppId,
            reason: PausedAppReason,
        ) -> ConductorResult<InstalledApp> {
            let (app, delta) = self
                .transition_app_status(app_id.clone(), AppStatusTransition::Pause(reason))
                .await?;
            self.process_app_status_fx(delta, Some(vec![app_id.clone()].into_iter().collect()))
                .await?;
            Ok(app)
        }

        /// Create any Cells which are missing for any running apps, then initialize
        /// and join them. (Joining could take a while.)
        pub(crate) async fn create_and_add_initialized_cells_for_running_apps(
            self: Arc<Self>,
            app_id: Option<&InstalledAppId>,
        ) -> ConductorResult<CellStartupErrors> {
            let results = self.clone().create_cells_for_running_apps(app_id).await?;
            let (new_cells, errors): (Vec<_>, Vec<_>) =
                results.into_iter().partition(Result::is_ok);

            let new_cells = new_cells
                .into_iter()
                // We can unwrap the successes because of the partition
                .map(Result::unwrap)
                .collect();

            let errors = errors
                .into_iter()
                // throw away the non-Debug types which will be unwrapped away anyway
                .map(|r| r.map(|_| ()))
                // We can unwrap the errors because of the partition
                .map(Result::unwrap_err)
                .collect();

            // Add the newly created cells to the Conductor with the PendingJoin
            // status, and start their workflow loops
            self.add_and_initialize_cells(new_cells);

            // Join these newly created cells to the network
            // (as well as any others which need joining)
            self.join_all_pending_cells().await;

            Ok(errors)
        }

        /// Attempt to join all PendingJoin cells to the kitsune network.
        /// Returns the cells which were joined during this call.
        ///
        /// NB: this could take as long as JOIN_NETWORK_TIMEOUT, which is significant.
        ///   Be careful to only await this future if it's important that cells be
        ///   joined before proceeding.
        pub(crate) async fn join_all_pending_cells(&self) -> Vec<CellId> {
            // Join the network but ignore errors because the
            // space retries joining all cells every 5 minutes.

            use holochain_p2p::AgentPubKeyExt;

            let tasks = self
            .mark_pending_cells_as_joining()
            .into_iter()
            .map(|(cell_id, cell)| async move {
                let p2p_agents_db = cell.p2p_agents_db().clone();
                let kagent = cell_id.agent_pubkey().to_kitsune();
                let agent_info = match p2p_agents_db.async_reader(move |tx| {
                    tx.p2p_get_agent(&kagent)
                }).await {
                    Ok(maybe_info) => maybe_info,
                    _ => None,
                };
                let maybe_initial_arc = agent_info.map(|i| i.storage_arc);
                let network = cell.holochain_p2p_dna().clone();
                match tokio::time::timeout(JOIN_NETWORK_TIMEOUT, network.join(cell_id.agent_pubkey().clone(), maybe_initial_arc)).await {
                    Ok(Err(e)) => {
                        tracing::info!(error = ?e, cell_id = ?cell_id, "Error while trying to join the network");
                        Err(cell_id)
                    }
                    Err(_) => {
                        tracing::info!(cell_id = ?cell_id, "Timed out trying to join the network");
                        Err(cell_id)
                    }
                    Ok(Ok(_)) => Ok(cell_id),
                }
            });

            let maybes: Vec<_> = futures::stream::iter(tasks)
                .buffer_unordered(100)
                .collect()
                .await;

            let (cell_ids, failed_joins): (Vec<_>, Vec<_>) =
                maybes.into_iter().partition(Result::is_ok);

            // These unwraps are both safe because of the partition.
            let cell_ids: Vec<_> = cell_ids.into_iter().map(Result::unwrap).collect();
            let failed_joins: Vec<_> = failed_joins.into_iter().map(Result::unwrap_err).collect();

            // Update the status of the cells which were able to join the network
            // (may or may not be all cells which were added)
            self.update_cell_status(cell_ids.as_slice(), CellStatus::Joined);

            self.update_cell_status(failed_joins.as_slice(), CellStatus::PendingJoin);

            cell_ids
        }

        /// Adjust app statuses (via state transitions) to match the current
        /// reality of which Cells are present in the conductor.
        /// - Do not change state for Disabled apps. For all others:
        /// - If an app is Paused but all of its (required) Cells are on,
        ///     then set it to Running
        /// - If an app is Running but at least one of its (required) Cells are off,
        ///     then set it to Paused
        pub(crate) async fn reconcile_app_status_with_cell_status(
            &self,
            app_ids: Option<HashSet<InstalledAppId>>,
        ) -> ConductorResult<AppStatusFx> {
            use AppStatus::*;
            use AppStatusTransition::*;

            let running_cells: HashSet<CellId> = self.running_cell_ids();
            let (_, delta) = self
                .update_state_prime(move |mut state| {
                    #[allow(deprecated)]
                    let apps = state.installed_apps_mut().iter_mut().filter(|(id, _)| {
                        app_ids
                            .as_ref()
                            .map(|ids| ids.contains(&**id))
                            .unwrap_or(true)
                    });
                    let delta = apps
                        .into_iter()
                        .map(|(_app_id, app)| {
                            match app.status().clone() {
                                Running => {
                                    // If not all required cells are running, pause the app
                                    let missing: Vec<_> = app
                                        .required_cells()
                                        .filter(|id| !running_cells.contains(id))
                                        .collect();
                                    if !missing.is_empty() {
                                        let reason = PausedAppReason::Error(format!(
                                            "Some cells are missing / not able to run: {:#?}",
                                            missing
                                        ));
                                        app.status.transition(Pause(reason))
                                    } else {
                                        AppStatusFx::NoChange
                                    }
                                }
                                Paused(_) => {
                                    // If all required cells are now running, restart the app
                                    if app.required_cells().all(|id| running_cells.contains(id)) {
                                        app.status.transition(Start)
                                    } else {
                                        AppStatusFx::NoChange
                                    }
                                }
                                Disabled(_) => {
                                    // Disabled status should never automatically change.
                                    AppStatusFx::NoChange
                                }
                            }
                        })
                        .fold(AppStatusFx::default(), AppStatusFx::combine);
                    Ok((state, delta))
                })
                .await?;
            Ok(delta)
        }

        /// Change the CellStatus of the given Cells in the Conductor.
        /// Silently ignores Cells that don't exist.
        pub(crate) fn update_cell_status(&self, cell_ids: &[CellId], status: CellStatus) {
            for cell_id in cell_ids {
                self.running_cells.share_mut(|cells| {
                    if let Some(mut cell) = cells.get_mut(cell_id) {
                        cell.status = status.clone();
                    }
                });
            }
        }
    }
}

/// Methods related to management of Conductor state
mod state_impls {
    use super::*;

    impl Conductor {
        pub(crate) async fn get_state(&self) -> ConductorResult<ConductorState> {
            self.spaces.get_state().await
        }

        /// Update the internal state with a pure function mapping old state to new
        pub(crate) async fn update_state<F: Send>(&self, f: F) -> ConductorResult<ConductorState>
        where
            F: FnOnce(ConductorState) -> ConductorResult<ConductorState> + 'static,
        {
            self.spaces.update_state(f).await
        }

        /// Update the internal state with a pure function mapping old state to new,
        /// which may also produce an output value which will be the output of
        /// this function
        pub(crate) async fn update_state_prime<F, O>(
            &self,
            f: F,
        ) -> ConductorResult<(ConductorState, O)>
        where
            F: FnOnce(ConductorState) -> ConductorResult<(ConductorState, O)> + Send + 'static,
            O: Send + 'static,
        {
            self.check_running()?;
            self.spaces.update_state_prime(f).await
        }

        /// Sends a JoinHandle to the TaskManager task to be managed
        pub(crate) async fn manage_task(&self, handle: ManagedTaskAdd) -> ConductorResult<()> {
            self.task_manager
                .share_ref(|tm| {
                    tm.as_ref()
                        .expect("Task manager not initialized")
                        .task_add_sender()
                        .clone()
                })
                .send(handle)
                .await
                .map_err(|e| ConductorError::SubmitTaskError(format!("{}", e)))
        }
    }
}

/// Methods related to zome function scheduling
mod scheduler_impls {
    use super::*;

    impl Conductor {
        pub(super) fn set_scheduler(&self, join_handle: tokio::task::JoinHandle<()>) {
            let mut scheduler = self.scheduler.lock();
            if let Some(existing_join_handle) = &*scheduler {
                existing_join_handle.abort();
            }
            *scheduler = Some(join_handle);
        }

        /// Start the scheduler. None is not an option.
        /// Calling this will:
        /// - Delete/unschedule all ephemeral scheduled functions GLOBALLY
        /// - Add an interval that runs IN ADDITION to previous invocations
        /// So ideally this would be called ONCE per conductor lifecyle ONLY.
        pub(crate) async fn start_scheduler(self: Arc<Self>, interval_period: std::time::Duration) {
            // Clear all ephemeral cruft in all cells before starting a scheduler.
            let cell_arcs = {
                let mut cell_arcs = vec![];
                for cell_id in self.running_cell_ids() {
                    if let Ok(cell_arc) = self.cell_by_id(&cell_id) {
                        cell_arcs.push(cell_arc);
                    }
                }
                cell_arcs
            };
            let tasks = cell_arcs
                .into_iter()
                .map(|cell_arc| cell_arc.delete_all_ephemeral_scheduled_fns());
            futures::future::join_all(tasks).await;

            let scheduler_handle = self.clone();
            self.set_scheduler(tokio::task::spawn(async move {
                let mut interval = tokio::time::interval(interval_period);
                loop {
                    interval.tick().await;
                    scheduler_handle
                        .clone()
                        .dispatch_scheduled_fns(Timestamp::now())
                        .await;
                }
            }));
        }

        /// The scheduler wants to dispatch any functions that are due.
        pub(crate) async fn dispatch_scheduled_fns(self: Arc<Self>, now: Timestamp) {
            let cell_arcs = {
                let mut cell_arcs = vec![];
                for cell_id in self.running_cell_ids() {
                    if let Ok(cell_arc) = self.cell_by_id(&cell_id) {
                        cell_arcs.push(cell_arc);
                    }
                }
                cell_arcs
            };

            let tasks = cell_arcs
                .into_iter()
                .map(|cell_arc| cell_arc.dispatch_scheduled_fns(now));
            futures::future::join_all(tasks).await;
        }
    }
}

/// Miscellaneous methods
mod misc_impls {
    use holochain_zome_types::builder;

    use super::*;

    impl Conductor {
        /// Grant a zome call capability for a cell
        pub async fn grant_zome_call_capability(
            &self,
            payload: GrantZomeCallCapabilityPayload,
        ) -> ConductorApiResult<()> {
            let GrantZomeCallCapabilityPayload { cell_id, cap_grant } = payload;

            let source_chain = SourceChain::new(
                self.get_authored_db(cell_id.dna_hash())?,
                self.get_dht_db(cell_id.dna_hash())?,
                self.get_dht_db_cache(cell_id.dna_hash())?,
                self.keystore.clone(),
                cell_id.agent_pubkey().clone(),
            )
            .await?;

            let cap_grant_entry = Entry::CapGrant(cap_grant);
            let entry_hash = EntryHash::with_data_sync(&cap_grant_entry);
            let action_builder = builder::Create {
                entry_type: EntryType::CapGrant,
                entry_hash,
            };

            source_chain
                .put_weightless(
                    action_builder,
                    Some(cap_grant_entry),
                    ChainTopOrdering::default(),
                )
                .await?;

            let cell = self.cell_by_id(&cell_id)?;
            source_chain.flush(cell.holochain_p2p_dna()).await?;

            Ok(())
        }

        /// Create a JSON dump of the cell's state
        pub async fn dump_cell_state(&self, cell_id: &CellId) -> ConductorApiResult<String> {
            let cell = self.cell_by_id(cell_id)?;
            let authored_db = cell.authored_db();
            let dht_db = cell.dht_db();
            let space = cell_id.dna_hash();
            let p2p_agents_db = self.p2p_agents_db(space);

            let peer_dump =
                p2p_agent_store::dump_state(p2p_agents_db.into(), Some(cell_id.clone())).await?;
            let source_chain_dump = source_chain::dump_state(
                authored_db.clone().into(),
                cell_id.agent_pubkey().clone(),
            )
            .await?;

            let out = JsonDump {
                peer_dump,
                source_chain_dump,
                integration_dump: integration_dump(&dht_db.clone().into()).await?,
            };
            // Add summary
            let summary = out.to_string();
            let out = (out, summary);
            Ok(serde_json::to_string_pretty(&out)?)
        }

        /// Create a comprehensive structured dump of a cell's state
        pub async fn dump_full_cell_state(
            &self,
            cell_id: &CellId,
            dht_ops_cursor: Option<u64>,
        ) -> ConductorApiResult<FullStateDump> {
            let authored_db = self.get_or_create_authored_db(cell_id.dna_hash())?;
            let dht_db = self.get_or_create_dht_db(cell_id.dna_hash())?;
            let dna_hash = cell_id.dna_hash();
            let p2p_agents_db = self.spaces.p2p_agents_db(dna_hash)?;

            let peer_dump =
                p2p_agent_store::dump_state(p2p_agents_db.into(), Some(cell_id.clone())).await?;
            let source_chain_dump =
                source_chain::dump_state(authored_db.into(), cell_id.agent_pubkey().clone())
                    .await?;

            let out = FullStateDump {
                peer_dump,
                source_chain_dump,
                integration_dump: full_integration_dump(&dht_db, dht_ops_cursor).await?,
            };
            Ok(out)
        }

        /// JSON dump of network metrics
        pub async fn dump_network_metrics(
            &self,
            dna_hash: Option<DnaHash>,
        ) -> ConductorApiResult<String> {
            use holochain_p2p::HolochainP2pSender;
            self.holochain_p2p()
                .dump_network_metrics(dna_hash)
                .await
                .map_err(crate::conductor::api::error::ConductorApiError::other)
        }

        /// Add signed agent info to the conductor
        pub async fn add_agent_infos(
            &self,
            agent_infos: Vec<AgentInfoSigned>,
        ) -> ConductorApiResult<()> {
            let mut space_map = HashMap::new();
            for agent_info_signed in agent_infos {
                let space = agent_info_signed.space.clone();
                space_map
                    .entry(space)
                    .or_insert_with(Vec::new)
                    .push(agent_info_signed);
            }
            for (space, agent_infos) in space_map {
                let db = self.p2p_agents_db(&DnaHash::from_kitsune(&space));
                inject_agent_infos(db, agent_infos.iter()).await?;
            }
            Ok(())
        }

        /// Inject records into a source chain for a cell.
        /// If the records form a chain segment that can be "grafted" onto the existing chain, it will be.
        /// Otherwise, a new chain will be formed using the specified records.
        pub async fn graft_records_onto_source_chain(
            self: Arc<Self>,
            cell_id: CellId,
            validate: bool,
            records: Vec<Record>,
        ) -> ConductorApiResult<()> {
            graft_records_onto_source_chain::graft_records_onto_source_chain(
                self, cell_id, validate, records,
            )
            .await
        }

        /// Update coordinator zomes on an existing dna.
        pub async fn update_coordinators(
            &self,
            hash: &DnaHash,
            coordinator_zomes: CoordinatorZomes,
            wasms: Vec<wasm::DnaWasm>,
        ) -> ConductorResult<()> {
            // Note this isn't really concurrent safe. It would be a race condition to update the
            // same dna concurrently.
            let mut ribosome = self
                .ribosome_store()
                .share_ref(|d| match d.get_ribosome(hash) {
                    Some(dna) => Ok(dna),
                    None => Err(DnaError::DnaMissing(hash.to_owned())),
                })?;
            let _old_wasms = ribosome
                .dna_file
                .update_coordinators(coordinator_zomes.clone(), wasms.clone())
                .await?;

            // Add new wasm code to db.
            self.put_wasm_code(
                ribosome.dna_def().clone(),
                wasms.into_iter(),
                Vec::with_capacity(0),
            )
            .await?;

            // Update RibosomeStore.
            self.ribosome_store()
                .share_mut(|d| d.add_ribosome(ribosome));

            // TODO: Remove old wasm code? (Maybe this needs to be done on restart as it could be in use).

            Ok(())
        }
    }
}

/// Pure accessor methods
mod accessor_impls {
    use super::*;

    impl Conductor {
        pub(crate) fn ribosome_store(&self) -> &RwShare<RibosomeStore> {
            &self.ribosome_store
        }

        pub(crate) fn get_queue_consumer_workflows(&self) -> QueueConsumerMap {
            self.spaces.queue_consumer_map.clone()
        }

        /// Access to the signal broadcast channel, to create
        /// new subscriptions
        pub fn signal_broadcaster(&self) -> SignalBroadcaster {
            let senders = self
                .app_interfaces
                .share_ref(|ai| ai.values().map(|i| i.signal_tx()).cloned().collect());
            SignalBroadcaster::new(senders)
        }

        /// Instantiate a Ribosome for use with a DNA
        pub(crate) fn get_ribosome(&self, dna_hash: &DnaHash) -> ConductorResult<RealRibosome> {
            self.ribosome_store
                .share_ref(|d| match d.get_ribosome(dna_hash) {
                    Some(r) => Ok(r),
                    None => Err(DnaError::DnaMissing(dna_hash.to_owned()).into()),
                })
        }

        /// Get a dna space or create it if one doesn't exist.
        pub(crate) fn get_or_create_space(&self, dna_hash: &DnaHash) -> ConductorResult<Space> {
            self.spaces.get_or_create_space(dna_hash)
        }

        pub(crate) fn get_or_create_authored_db(
            &self,
            dna_hash: &DnaHash,
        ) -> ConductorResult<DbWrite<DbKindAuthored>> {
            self.spaces.authored_db(dna_hash)
        }

        pub(crate) fn get_or_create_dht_db(
            &self,
            dna_hash: &DnaHash,
        ) -> ConductorResult<DbWrite<DbKindDht>> {
            self.spaces.dht_db(dna_hash)
        }

        pub(crate) fn p2p_agents_db(&self, hash: &DnaHash) -> DbWrite<DbKindP2pAgents> {
            self.spaces
                .p2p_agents_db(hash)
                .expect("failed to open p2p_agent_store database")
        }

Get the peer database (this will create the space if it doesn’t already exist).

Examples found in repository?
src/conductor/conductor.rs (line 2097)
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        pub(crate) fn p2p_metrics_db(&self, hash: &DnaHash) -> DbWrite<DbKindP2pMetrics> {
            self.spaces
                .p2p_metrics_db(hash)
                .expect("failed to open p2p_metrics_store database")
        }
More examples
Hide additional examples
src/conductor/kitsune_host_impl.rs (line 80)
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    fn record_metrics(
        &self,
        space: std::sync::Arc<kitsune_p2p::KitsuneSpace>,
        records: Vec<kitsune_p2p::event::MetricRecord>,
    ) -> KitsuneHostResult<()> {
        async move {
            let db = self.spaces.p2p_metrics_db(&DnaHash::from_kitsune(&space))?;
            use holochain_sqlite::db::AsP2pMetricStoreConExt;
            let permit = db.conn_permit().await;
            let task = tokio::task::spawn_blocking(move || {
                let mut conn = db.with_permit(permit)?;
                conn.p2p_log_metrics(records)
            })
            .await;
            Ok(task??)
        }
        .boxed()
        .into()
    }

Get the batch sender (this will create the space if it doesn’t already exist).

Examples found in repository?
src/conductor/conductor.rs (line 2091)
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        pub(crate) fn p2p_batch_sender(
            &self,
            hash: &DnaHash,
        ) -> tokio::sync::mpsc::Sender<P2pBatch> {
            self.spaces
                .p2p_batch_sender(hash)
                .expect("failed to get p2p_batch_sender")
        }

the network module is requesting a list of dht op hashes Get the DhtOpHashes and authored timestamps for a given time window.

The network module needs info about various groupings (“regions”) of ops

Note that this always includes all ops regardless of integration status. This is to avoid the degenerate case of freshly joining a network, and having several new peers gossiping with you at once about the same regions. If we calculate our region hash only by integrated ops, we will experience mismatches for a large number of ops repeatedly until we have integrated those ops. Note that when sending ops we filter out ops in limbo.

The network module is requesting the content for dht ops

The network module is requesting the content for dht ops

The network module is requesting the content for dht ops

we are receiving a “publish” event from the network

Get the recent_threshold based on the kitsune network config

Trait Implementations§

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TODO: once 1.33.0 is the minimum supported compiler version, remove Any::type_id_compat and use StdAny::type_id instead. https://github.com/rust-lang/rust/issues/27745
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Converts some archived metadata to the pointer metadata for itself.
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Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The alignment of pointer.
The type for initializers.
Initializes a with the given initializer. Read more
Dereferences the given pointer. Read more
Mutably dereferences the given pointer. Read more
Drops the object pointed to by the given pointer. Read more
The type for metadata in pointers and references to Self.
Should always be Self
The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
Checks if self is actually part of its subset T (and can be converted to it).
Use with care! Same as self.to_subset but without any property checks. Always succeeds.
The inclusion map: converts self to the equivalent element of its superset.
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.
upcast ref
upcast mut ref
upcast boxed dyn
Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more