holochain 0.0.165

# Changelog

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/). This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## Unreleased

## 0.0.165

## 0.0.164

- Add App API call to archive an existing clone cell. [\#1578](https://github.com/holochain/holochain/pull/1578)
- Add Admin API call to restore an archived clone cell. [\#1578](https://github.com/holochain/holochain/pull/1578)
- Add Admin API call to delete all archived clone cells of an app’s role. For example, there is a base cell with role `document` and clones `document.0`, `document.1` etc.; this call deletes all clones permanently that have been archived before. This is not reversable; clones cannot be restored afterwards. [\#1578](https://github.com/holochain/holochain/pull/1578)

## 0.0.163

- Fixed rare “arc is not quantizable” panic, issuing a warning instead. [\#1577](https://github.com/holochain/holochain/pull/1577)

## 0.0.162

- **BREAKING CHANGE**: Implement App API call `CreateCloneCell`. **Role ids must not contain a dot `.` any more.** Clone ids make use of the dot as a delimiter to separate role id and clone index. [\#1547](https://github.com/holochain/holochain/pull/1547)
- Remove conductor config legacy keystore config options. These config options have been broken since we removed legacy lair in \#1518, hence this fix itself is not a breaking change. Also adds the `lair_server_in_proc` keystore config option as the new default to run an embedded lair server inside the conductor process, no longer requiring a separate system process. [\#1571](https://github.com/holochain/holochain/pull/1571)

## 0.0.161

## 0.0.160

## 0.0.159

- Updates TLS certificate handling so that multiple conductors can share the same lair, but use different TLS certificates by storing a “tag” in the conductor state database. This should not be a breaking change, but *will* result in a new TLS certificate being used per conductor. [\#1519](https://github.com/holochain/holochain/pull/1519)

## 0.0.158

## 0.0.157

## 0.0.156

- Effectively disable Wasm metering by setting the cranelift cost\_function to always return 0. This is meant as a temporary stop-gap and give us time to figure out a configurable approach. [\#1535](https://github.com/holochain/holochain/pull/1535)

## 0.0.155

- **BREAKING CHANGE** - Removes legacy lair. You must now use lair-keystore \>= 0.2.0 with holochain. It is recommended to abandon your previous holochain agents, as there is not a straight forward migration path. To migrate: [dump the old keys](https://github.com/holochain/lair/blob/v0.0.11/crates/lair_keystore/src/bin/lair-keystore/main.rs#L38) -\> [write a utility to re-encode them](https://github.com/holochain/lair/tree/hc_seed_bundle-v0.1.2/crates/hc_seed_bundle) -\> [then import them to the new lair](https://github.com/holochain/lair/tree/lair_keystore-v0.2.0/crates/lair_keystore#lair-keystore-import-seed---help) – [\#1518](https://github.com/holochain/holochain/pull/1518)
- New solution for adding `hdi_version_req` field to the output of `--build-info` argument. [\#1523](https://github.com/holochain/holochain/pull/1523)

## 0.0.154

- Revert: “Add the `hdi_version_req` key:value field to the output of the `--build-info` argument” because it broke. [\#1521](https://github.com/holochain/holochain/pull/1521)
  
  Reason: it causes a build failure of the *holochain*  crate on crates.io

## 0.0.153

- Add the `hdi_version_req` key:value field to the output of the `--build-info` argument

## 0.0.152

- Adds `AdminRequest::UpdateCoordinators` that allows swapping coordinator zomes for a running happ.

## 0.0.151

- BREAKING CHANGE - Refactor: Property `integrity.uid` of DNA Yaml files renamed to `integrity.network_seed`. Functionality has not changed. [\#1493](https://github.com/holochain/holochain/pull/1493)
- Allow deterministic bindings (dna\_info() & zome\_info()) to the genesis self check [\#1491](https://github.com/holochain/holochain/pull/1491).

## 0.0.150

## 0.0.149

## 0.0.148

- Added networking logic for enzymatic countersigning [\#1472](https://github.com/holochain/holochain/pull/1472)
- Countersigning authority response network message changed to a session negotiation enum [/\#1472](https://github.com/holochain/holochain/pull/1472)

## 0.0.147

## 0.0.146

## 0.0.145

**MAJOR BREAKING CHANGE\!** This release includes a rename of two Holochain core concepts, which results in a LOT of changes to public APIs and type names:

- “Element” has been renamed to “Record”
- “Header” has been renamed to “Action”

All names which include these words have also been renamed accordingly.

As Holochain has evolved, the meaning behind these concepts, as well as our understanding of them, has evolved as well, to the point that the original names are no longer adequate descriptors. We chose new names to help better reflect what these concepts mean, to bring more clarity to how we write and talk about Holochain.

## 0.0.144

- Add functional stub for `x_salsa20_poly1305_shared_secret_create_random` [\#1410](https://github.com/holochain/holochain/pull/1410)
- Add functional stub for `x_salsa20_poly1305_shared_secret_export` [\#1410](https://github.com/holochain/holochain/pull/1410)
- Add functional stub for `x_salsa20_poly1305_shared_secret_ingest` [\#1410](https://github.com/holochain/holochain/pull/1410)
- Limit conductor calls to `10_000_000_000` Wasm operations [\#1386](https://github.com/holochain/holochain/pull/1386)

## 0.0.143

## 0.0.142

## 0.0.141

## 0.0.140

## 0.0.139

- Udpate lair to 0.1.3 - largely just documentation updates, but also re-introduces some dependency pinning to fix mismatch client/server version check [\#1377](https://github.com/holochain/holochain/pull/1377)

## 0.0.138

## 0.0.137

- Docs: Fix intra-doc links in all crates [\#1323](https://github.com/holochain/holochain/pull/1323)
- Update legacy lair to 0.0.10 - allowing “panicky” flag [\#1349](https://github.com/holochain/holochain/pull/1349)
- Udpate lair to 0.1.1 - allowing usage in path with whitespace [\#1349](https://github.com/holochain/holochain/pull/1349)

## 0.0.136

## 0.0.135

## 0.0.134

## 0.0.133

## 0.0.132

## 0.0.131

- When joining the network set arc size to previous value if available instead of full to avoid network load [1287](https://github.com/holochain/holochain/pull/1287)

## 0.0.130

- Workflow errors generally now log rather than abort the current app [1279](https://github.com/holochain/holochain/pull/1279/files)

- Fixed broken links in Rust docs [\#1284](https://github.com/holochain/holochain/pull/1284)

## 0.0.129

## 0.0.128

- Proxy server chosen from bootstrap server proxy\_list [1242](https://github.com/holochain/holochain/pull/1242)

<!-- end list -->

``` yaml
network:
  transport_pool:
    - type: proxy
      proxy_config:
        type: remote_proxy_client_from_bootstrap
        bootstrap_url: https://bootstrap.holo.host
        fallback_proxy_url: ~
```

## 0.0.127

- **BREAKING CHANGE** App validation callbacks are now run per `Op`. There is now only a single validation callback `fn validate(op: Op) -> ExternResult<ValidateCallbackResult>` that is called for each `Op`. See the documentation for `Op` for more details on what data is passed to the callback. There are example use cases in `crates/test_utils/wasm/wasm_workspace/`. For example in the `validate` test wasm. To update an existing app, you to this version all `validate_*` callbacks including `validate_create_link` must be changed to the new `validate(..)` callback. [\#1212](https://github.com/holochain/holochain/pull/1212).

- `RegisterAgentActivity` ops are now validated by app validation.

- Init functions can now make zome calls. [\#1186](https://github.com/holochain/holochain/pull/1186)

- Adds header hashing to `hash` host fn [1227](https://github.com/holochain/holochain/pull/1227)

- Adds blake2b hashing to `hash` host fn [1228](https://github.com/holochain/holochain/pull/1228)

## 0.0.126

## 0.0.125

## 0.0.124

## 0.0.123

- Fixes issue where holochain could get stuck in infinite loop when trying to send validation receipts. [\#1181](https://github.com/holochain/holochain/pull/1181).
- Additional networking metric collection and associated admin api `DumpNetworkMetrics { dna_hash: Option<DnaHash> }` for inspection of metrics [\#1160](https://github.com/holochain/holochain/pull/1160)
- **BREAKING CHANGE** - Schema change for metrics database. Holochain will persist historical metrics once per hour, if you do not clear the metrics database it will crash at that point. [\#1183](https://github.com/holochain/holochain/pull/1183)

## 0.0.122

- Adds better batching to validation workflows for much faster validation. [\#1167](https://github.com/holochain/holochain/pull/1167).

## 0.0.121

- **BREAKING CHANGE** Removed `app_info` from HDK [1108](https://github.com/holochain/holochain/pull/1108)
- Permissions on host functions now return an error instead of panicking [1141](https://github.com/holochain/holochain/pull/1141)
- Add `--build-info` CLI flag for displaying various information in JSON format. [\#1163](https://github.com/holochain/holochain/pull/1163)

## 0.0.120

## 0.0.119

## 0.0.118

- **BREAKING CHANGE** - Gossip now exchanges local peer info with `initiate` and `accept` request types. [\#1114](https://github.com/holochain/holochain/pull/1114).

## 0.0.117

## 0.0.116

## 0.0.115

- Fix [issue](https://github.com/holochain/holochain/issues/1100) where private dht ops were being leaked through the incoming ops sender. [1104](https://github.com/holochain/holochain/pull/1104).
- Kitsune now attempts to rebind the network interface in the event of endpoint shutdown. Note, it’s still recommended to bind to `0.0.0.0` as the OS provides additional resiliency for interfaces coming and going. [\#1083](https://github.com/holochain/holochain/pull/1083)
- **BREAKING CHANGE** current chain head including recent writes available in agent info [\#1079](https://github.com/holochain/holochain/pull/1079)
- **BREAKING (If using new lair)** If you are using the new (non-legacy) `lair_server` keystore, you will need to rebuild your keystore, we now pre-hash the passphrase used to access it to mitigate some information leakage. [\#1094](https://github.com/holochain/holochain/pull/1094)
- Better lair signature fallback child process management. The child process will now be properly restarted if it exits. (Note this can take a few millis on Windows, and may result in some signature errors.) [\#1094](https://github.com/holochain/holochain/pull/1094)

## 0.0.114

- `remote_signal` has always been a fire-and-forget operation. Now it also uses the more efficient fire-and-forget “notify” low-level networking plumbing. [\#1075](https://github.com/holochain/holochain/pull/1075)

- **BREAKING CHANGE** `entry_defs` added to `zome_info` and referenced by macros [PR1055](https://github.com/holochain/holochain/pull/1055)

- **BREAKING CHANGE**: The notion of “cell nicknames” (“nicks”) and “app slots” has been unified into the notion of “app roles”. This introduces several breaking changes. In general, you will need to rebuild any app bundles you are using, and potentially update some usages of the admin interface. In particular:
  
  - The `slots` field in App manifests is now called `roles`
  - The `InstallApp` admin method now takes a `role_id` field instead of a `nick` field
  - In the return value for any admin method which lists installed apps, e.g. `ListEnabledApps`, any reference to `"slots"` is now named `"roles"`
  - See [\#1045](https://github.com/holochain/holochain/pull/1045)

- Adds test utils for creating simulated networks. [\#1037](https://github.com/holochain/holochain/pull/1037).

- Conductor can take a mocked network for testing simulated networks. [\#1036](https://github.com/holochain/holochain/pull/1036)

- Added `DumpFullState` to the admin interface, as a more complete form of `DumpState` which returns full `Vec<DhtOp>` instead of just their count, enabling more introspection of the state of the cell [\#1065](https://github.com/holochain/holochain/pull/1065).

- **BREAKING CHANGE** Added function name to call info in HDK. [\#1078](https://github.com/holochain/holochain/pull/1078).

## 0.0.113

- Post commit is now infallible and expects no return value [PR1049](https://github.com/holochain/holochain/pull/1049)
- Always depend on `itertools` to make `cargo build --no-default-features` work [\#1060](https://github.com/holochain/holochain/pull/1060)
- `call_info` includes provenance and cap grant information [PR1063](https://github.com/holochain/holochain/pull/1063)
- Always depend on `itertools` to make `cargo build --no-default-features` work [\#1060](https://github.com/holochain/holochain/pull/1060)

## 0.0.112

- Always depend on `itertools` to make `cargo build --no-default-features` work [\#1060](https://github.com/holochain/holochain/pull/1060)

## 0.0.111

- `call_info` is now implemented [1047](https://github.com/holochain/holochain/pull/1047)

- `dna_info` now returns `DnaInfo` correctly [\#1044](https://github.com/holochain/holochain/pull/1044)
  
  - `ZomeInfo` no longer includes what is now on `DnaInfo`
  - `ZomeInfo` renames `zome_name` and `zome_id` to `name` and `id`
  - `DnaInfo` includes `name`, `hash`, `properties`

- `post_commit` hook is implemented now [PR 1000](https://github.com/holochain/holochain/pull/1000)

- Bump legacy lair version to 0.0.8 fixing a crash when error message was too long [\#1046](https://github.com/holochain/holochain/pull/1046)

- Options to use new lair keystore [\#1040](https://github.com/holochain/holochain/pull/1040)

<!-- end list -->

``` yaml
keystore:
  type: danger_test_keystore
```

or

``` yaml
keystore:
  type: lair_server
  connection_url: "unix:///my/path/socket?k=Foo"
```

## 0.0.110

- Publish now runs on a loop if there are ops still needing receipts. [\#1024](https://github.com/holochain/holochain/pull/1024)
- Batch peer store write so we use less transactions. [\#1007](https://github.com/holochain/holochain/pull/1007/).
- Preparation for new lair api [\#1017](https://github.com/holochain/holochain/pull/1017)
  - there should be no functional changes with this update.
  - adds new lair as an additional dependency and begins preparation for a config-time switch allowing use of new api lair keystore.
- Add method `SweetDnaFile::from_bundle_with_overrides` [\#1030](https://github.com/holochain/holochain/pull/1030)
- Some `SweetConductor::setup_app_*` methods now take anything iterable, instead of array slices, for specifying lists of agents and DNAs [\#1030](https://github.com/holochain/holochain/pull/1030)
- BREAKING conductor config changes [\#1031](https://github.com/holochain/holochain/pull/1031)

Where previously, you might have had:

``` yaml
use_dangerous_test_keystore: false
keystore_path: /my/path
passphrase_service:
  type: danger_insecure_from_config
  passphrase: "test-passphrase"
```

now you will use:

``` yaml
keystore:
  type: lair_server_legacy_deprecated
  keystore_path: /my/path
  danger_passphrase_insecure_from_config: "test-passphrase"
```

or:

``` yaml
keystore:
  type: danger_test_keystore_legacy_deprecated
```

## 0.0.109

- Make validation run concurrently up to 50 DhtOps. This allows us to make progress on other ops when waiting for the network. [\#1005](https://github.com/holochain/holochain/pull/1005)
- FIX: Prevent the conductor from trying to join cells to the network that are already in the process of joining. [\#1006](https://github.com/holochain/holochain/pull/1006)

## 0.0.108

- Refactor conductor to use parking lot rw lock instead of tokio rw lock. (Faster and prevents deadlocks.). [\#979](https://github.com/holochain/holochain/pull/979).

### Changed

- The scheduler should work now

## 0.0.107

## 0.0.106

### Changed

- All Holochain `Timestamp`s (including those in Headers) are now at the precision of microseconds rather than nanoseconds. This saves 4 bytes per timestamp in memory and on disk.
- Various database field names changed. **Databases created in prior versions will be incompatible.**
- HDK `sys_time` now returns a `holochain_zome_types::Timestamp` instead of a `core::time::Duration`.
- Exposes `UninstallApp` in the conductor admin API.

## 0.0.105

## 0.0.104

- Updates lair to 0.0.4 which pins rcgen to 0.8.11 to work around [https://github.com/est31/rcgen/issues/63](https://github.com/est31/rcgen/issues/63)

## 0.0.103

### Fixed

- This release solves the issues with installing happ bundles or registering DNA via the admin API concurrently. [\#881](https://github.com/holochain/holochain/pull/881).

### Changed

- Header builder now uses chain top timestamp for new headers if in the future
- Timestamps in headers require strict inequality in sys validation

## 0.0.102

### Known Issues :exclamation:

- We’ve become aware of a bug that locks up the conductor when installing happ bundles or registering DNA via the admin API concurrently. Please perform these actions sequentially until we’ve resolved the bug.

### Fixed

- Concurrent zome calls could cause the `init()` zome callback to run multiple times concurrently, causing `HeadMoved` errors. This is fixed, so that `init()` can only ever run once.
  - If a zome call has been waiting for another zome call to finish running `init()` for longer than 30 seconds, it will timeout.

### Changed

- Apps now have a more complex status. Apps now can be either enabled/disabled as well as running/stopped, the combination of which is captured by three distinctly named states:
  - “Running” (enabled + running) -\> The app is running normally
  - “Paused” (enabled + stopped) -\> The app is currently stopped due to some minor problem in one of its cells such as failed network access, but will start running again as soon as it’s able. Some Cells may still be running normally.
  - “Disabled” (disabled + stopped) -\> The app is stopped and will remain so until explicitly enabled via `EnableApp` admin method. Apps can be disabled manually via `DisableApp`, or automatically due to an unrecoverable error in a Cell.
- Some admin methods are deprecated due to the app status changes:
  - `ActivateApp` is deprecated in favor of `EnableApp`
  - `DeactivateApp` is deprecated in favor of `DisableApp`
- Apps will be automatically Paused if not all of their cells are able to join the network during startup

### Added

- `InstallAppBundle` command added to admin conductor API. [\#665](https://github.com/holochain/holochain/pull/665)
- `DnaSource` in conductor\_api `RegisterDna` call now can take a `DnaBundle` [\#665](https://github.com/holochain/holochain/pull/665)
- New admin interface methods:
  - `EnableApp` (replaces `ActivateApp`)
  - `DisableApp` (replaces `DeactivateApp`)
  - `StartApp` (used to attempt to manually restart a Paused app)
- Using the 3 level PLRU instance cache from latest holochain wasmer `v0.0.72`

## 0.0.101

This version contains breaking changes to the conductor API as well as a major upgrade to the underlying Wasm runtime.

***:exclamation: Performance impact***

The version of wasmer that is used in this holochain release contains bugs in the scoping of wasmer modules vs. instances, such that it blocks the proper release of memory and slows down execution of concurrent Wasm instances. While we were able to at least mitigate these effects and are coordinating with wasmer to find a proper solution as soon as possible.

The severity of these issues increases with cell concurrency, i.e. using multiple cells with the same DNA. Application development with a single conductor and a few cells are expected to work well unless your machine has serious resource restrictions.

### Added

- `InstallAppBundle` command added to admin conductor API. [\#665](https://github.com/holochain/holochain/pull/665)
- `DnaSource` in conductor\_api `RegisterDna` call now can take a `DnaBundle` [\#665](https://github.com/holochain/holochain/pull/665)

### Removed

- BREAKING:  `InstallAppDnaPayload` in admin conductor API `InstallApp` command now only accepts a hash.  Both properties and path have been removed as per deprecation warning.  Use either `RegisterDna` or `InstallAppBundle` instead. [\#665](https://github.com/holochain/holochain/pull/665)
- BREAKING: `DnaSource(Path)` in conductor\_api `RegisterDna` call now must point to `DnaBundle` as created by `hc dna pack` not a `DnaFile` created by `dna_util` [\#665](https://github.com/holochain/holochain/pull/665)

### CHANGED

- Updated to a version of `holochain_wasmer` that includes a migration to wasmer v2+. [\#773](https://github.com/holochain/holochain/pull/773/files), [\#801](https://github.com/holochain/holochain/pull/80), [\#836](https://github.com/holochain/holochain/pull/836)
- Introduced a simple instance cache to mitigate and potentially outweigh the effects of the aforementioned wasmer conditions [\#848](https://github.com/holochain/holochain/pull/848)

## 0.0.100

This is the first version number for the version of Holochain with a refactored state model (you may see references to it as Holochain RSM).

## 0.0.52-alpha2

*Note: Versions 0.0.52-alpha2 and older are belong to previous iterations of the Holochain architecture and are not tracked here.*