Merge pull request #2540 from oasislabs/tjanez/changelog-20.0

changelog: Assemble changes for release 20.0
oasisprotocol · Jan 10, 2020 · 83df083 · 83df083
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@@ -10,6 +10,133 @@ The format is inspired by [Keep a Changelog].
 
 <!-- TOWNCRIER -->
 
+## 20.0 (2020-01-10)
+
+### Removals and Breaking changes
+
+- Use the new runtime ID allocation scheme
+  ([#1693](https://github.com/oasislabs/oasis-core/issues/1693))
+
+  This change alters the runtime ID allocation scheme to reserve the first
+  64 bits for flags indicating various properties of the runtime, and to
+  forbid registering runtimes that have test runtime IDs unless the
+  appropriate consensus flag is set.
+
+- Remove staking-related roothash messages.
+  ([#2377](https://github.com/oasislabs/oasis-core/issues/2377))
+
+  There is no longer a plan to support direct manipulation of the staking accounts
+  from the runtimes in order to isolate the runtimes from corrupting the
+  consensus layer.
+
+  To reduce complexity, the staking-related roothash messages were removed. The
+  general roothash message mechanism stayed as-is since it may be useful in the
+  future, but any commits with non-empty messages are rejected for now.
+
+- Refactoring of roothash genesis block for runtime.
+  ([#2426](https://github.com/oasislabs/oasis-core/issues/2426))
+
+  - `RuntimeGenesis.Round` field was added to the roothash block for the runtime
+  which can be set by `--runtime.genesis.round` flag.
+  - The `RuntimeGenesis.StorageReceipt` field was replaced by `StorageReceipts` list,
+  one for each storage node.
+  - Support for `base64` encoding/decoding of `Bytes` was added in rust.
+
+- When registering a new runtime, require that the given key manager ID points
+  to a valid key manager in the registry.
+  ([#2459](https://github.com/oasislabs/oasis-core/issues/2459))
+
+- Remove `oasis-node debug dummy` sub-commands.
+  ([#2492](https://github.com/oasislabs/oasis-core/issues/2492))
+
+  These are only useful for testing, and our test harness has a internal Go API
+  that removes the need to have this functionality exposed as a sub-command.
+
+- Make storage per-runtime.
+  ([#2494](https://github.com/oasislabs/oasis-core/issues/2494))
+
+  Previously there was a single storage backend used by `oasis-node` which required that a single
+  database supported multiple namespaces for the case when multiple runtimes were being used in a
+  single node.
+
+  This change simplifies the storage database backends by removing the need for backends to implement
+  multi-namespace support, reducing overhead and cleanly separating per-runtime state.
+
+  Due to this changing the internal database format, this breaks previous (compute node) deployments
+  with no way to do an automatic migration.
+
+### Features
+
+- Add `oasis-node debug storage export` sub-command.
+  ([#1845](https://github.com/oasislabs/oasis-core/issues/1845))
+
+- Add fuzzing for consensus methods.
+  ([#2245](https://github.com/oasislabs/oasis-core/issues/2245))
+
+  Initial support for fuzzing was added, along with an implementation of
+  it for some of the consensus methods. The implementation uses
+  oasis-core's demultiplexing and method dispatch mechanisms.
+
+- Add storage backend fuzzing.
+  ([#2246](https://github.com/oasislabs/oasis-core/issues/2246))
+
+  Based on the work done for consensus fuzzing, support was added to run fuzzing
+  jobs on the storage api backend.
+
+- Add `oasis-node unsafe-reset` sub-command which resets the node back to a
+  freshly provisioned state, preserving any key material if it exists.
+  ([#2435](https://github.com/oasislabs/oasis-core/issues/2435))
+
+- Add txsource.
+  ([#2478](https://github.com/oasislabs/oasis-core/issues/2478))
+
+  The so-called "txsource" utility introduced in this PR is a starting point for something like a client that sends
+  transactions for a long period of time, for the purpose of creating long-running tests.
+
+  With this change is a preliminary sample "workload"--a DRBG-backed schedule of transactions--which transfers staking
+  tokens around among a set of test accounts.
+
+- Add consensus block and transaction metadata accessors.
+  ([#2482](https://github.com/oasislabs/oasis-core/issues/2482))
+
+  In order to enable people to build "network explorers", we exposed some
+  additional methods via the consensus API endpoint, specifically:
+
+  - Consensus block metadata.
+  - Access to raw consensus transactions within a block.
+  - Stream of consensus blocks as they are finalized.
+
+- Make maximum in-memory cache size for runtime storage configurable.
+  ([#2494](https://github.com/oasislabs/oasis-core/issues/2494))
+
+  Previously the value of 64mb was always used as the size of the in-memory storage cache. This adds a
+  new configuration parameter/command-line flag `--storage.max_cache_size` which configures the
+  maximum size of the in-memory runtime storage cache.
+
+- Undisable transfers for some senders.
+  ([#2498](https://github.com/oasislabs/oasis-core/issues/2498))
+
+  Ostensibly for faucet purposes while we run the rest of the network with transfers disabled,
+  this lets us identify a whitelist of accounts from which we allow transfers when otherwise transfers are disabled.
+
+  Configure this with a map of allowed senders' public keys -> `true` in the new `undisable_transfers_from` field in the
+  staking consensus parameters object along with `"disable_transfers": true`.
+
+- Entity block signatures count tool.
+  ([#2500](https://github.com/oasislabs/oasis-core/issues/2500))
+
+  The tool uses node consensus and registry API endpoints and computes the per
+  entity block signature counts.
+
+### Bug Fixes
+
+- Reduce Badger in-memory cache sizes.
+  ([#2484](https://github.com/oasislabs/oasis-core/issues/2484))
+
+  The default is 1 GiB per badger instance and we use a few instances so this
+  resulted in some nice memory usage.
+
+
 ## 19.0 (2019-12-18)
 
 ### Process