1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114

// Copyright 2021 MaidSafe.net limited.
//
// This SAFE Network Software is licensed to you under The General Public License (GPL), version 3.
// Unless required by applicable law or agreed to in writing, the SAFE Network Software distributed
// under the GPL Licence is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. Please review the Licences for the specific language governing
// permissions and limitations relating to use of the SAFE Network Software.

use crate::{
    capacity::{Capacity, ChunkHolderDbs, RateLimit},
    metadata::{adult_reader::AdultReader, Metadata},
    node_ops::NodeDuty,
    section_funds::{reward_wallets::RewardWallets, SectionFunds},
    transfers::get_replicas::{replica_info, transfer_replicas},
    transfers::Transfers,
    Error, Node, Result,
};
use crdts::Actor;
use itertools::Itertools;
use log::{debug, info};
use sn_data_types::{
    ActorHistory, CreditAgreementProof, NodeAge, PublicKey, SectionElders, TransferPropagated,
    WalletHistory,
};
use sn_messaging::{
    client::{Message, NodeCmd, NodeSystemCmd},
    Aggregation, DstLocation, MessageId,
};
use sn_routing::XorName;
use std::collections::BTreeMap;

impl Node {
    /// If we are an oldie we'll have a transfer instance,
    /// This updates the replica info on it.
    pub async fn update_replicas(&mut self) -> Result<()> {
        if let Some(ref mut transfers) = self.transfers {
            let info = replica_info(&self.node_info, &self.network_api).await?;
            transfers.update_replica_info(info);
        }
        Ok(())
    }

    /// Level up a newbie to an oldie on promotion
    pub async fn level_up(&mut self) -> Result<()> {
        //
        // do not hande immutable chunks anymore
        self.chunks = None;
        self.used_space.reset().await;

        //
        // start handling metadata
        let dbs = ChunkHolderDbs::new(self.node_info.path())?;
        let reader = AdultReader::new(self.network_api.clone());
        let meta_data =
            Metadata::new(&self.node_info.path(), &self.used_space, dbs, reader).await?;
        self.meta_data = Some(meta_data);

        //
        // start handling transfers
        let dbs = ChunkHolderDbs::new(self.node_info.root_dir.as_path())?;
        let rate_limit = RateLimit::new(self.network_api.clone(), Capacity::new(dbs.clone()));
        let user_wallets = BTreeMap::<PublicKey, ActorHistory>::new();
        let replicas = transfer_replicas(&self.node_info, &self.network_api, user_wallets).await?;
        self.transfers = Some(Transfers::new(replicas, rate_limit));

        //
        // start handling node rewards
        self.section_funds = Some(SectionFunds::KeepingNodeWallets {
            wallets: RewardWallets::new(BTreeMap::<XorName, (NodeAge, PublicKey)>::new()),
            payments: Default::default(),
        });

        Ok(())
    }

    /// Continue the level up and handle more responsibilities.
    pub async fn synch_state(
        &mut self,
        node_wallets: BTreeMap<XorName, (NodeAge, PublicKey)>,
        user_wallets: BTreeMap<PublicKey, ActorHistory>,
    ) -> Result<NodeDuty> {
        // merge in provided user wallets
        if let Some(transfers) = &mut self.transfers {
            transfers.merge(user_wallets)
        }

        //  merge in provided node reward stages
        match &mut self.section_funds {
            Some(SectionFunds::KeepingNodeWallets { wallets, .. })
            | Some(SectionFunds::Churning { wallets, .. }) => {
                for (key, (age, wallet)) in &node_wallets {
                    wallets.set_node_wallet(*key, *age, *wallet);
                }
            }
            None => {
                return Err(Error::InvalidOperation(
                    "Invalid section funds stage".to_string(),
                ))
            }
        }

        let node_id = self.network_api.our_name().await;
        let no_wallet_found = node_wallets.get(&node_id).is_none();
        if no_wallet_found {
            info!(
                "Registering wallet of node: {} (since not found in received state)",
                node_id,
            );
            Ok(NodeDuty::Send(self.register_wallet().await))
        } else {
            Ok(NodeDuty::NoOp)
        }
    }
}