v0.9.0

Summary

• ABCI Query message has more structure and returns Merkle proofs
• Various improvements in using Docker and Continuous Integration
• PEX fixes and other P2P improvements
• More handshake/replay stability
• New rpc endpoint /commit
• RPC Client API in Go

Breaking

• ABCI Query structure (multiple arguments and return values)
• BlockMeta structure (uses BlockID)
• tendermint gen_validator command output (pure JSON)
• ValidatorSet structure (exposes Proposer field and renames Proposer() to GetProposer())

Details

Node

• Node is now a BaseService
• Simplify starting Tendermint in-process from another application

Coding and Testing

• Makefile better organized
• Scripts for auto-building binaries across platforms
• Docker image improved, slimmed down (using Alpine), and changed from tendermint/tmbase to tendermint/tendermint
• CONTRIBUTING.md and github ISSUE_TEMPLATE
• Improvements on CircleCI for managing build/test artifacts
• Tests for the PEX reactor and DialSeeds

ABCI

• Query message is now Query(reqQuery RequestQuery) ResponseQuery where

type RequestQuery struct {
	Data   []byte `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
	Path   string `protobuf:"bytes,2,opt,name=path" json:"path,omitempty"`
	Height uint64 `protobuf:"varint,3,opt,name=height" json:"height,omitempty"`
	Prove  bool   `protobuf:"varint,4,opt,name=prove" json:"prove,omitempty"`
}

type ResponseQuery struct {
	Code       CodeType `protobuf:"varint,1,opt,name=code,enum=types.CodeType" json:"code,omitempty"`
	Index      int64    `protobuf:"varint,2,opt,name=index" json:"index,omitempty"`
	Key        []byte   `protobuf:"bytes,3,opt,name=key,proto3" json:"key,omitempty"`
	Value      []byte   `protobuf:"bytes,4,opt,name=value,proto3" json:"value,omitempty"`
	Proof      []byte   `protobuf:"bytes,5,opt,name=proof,proto3" json:"proof,omitempty"`
	LastHeight uint64   `protobuf:"varint,6,opt,name=last_height,json=lastHeight" json:"last_height,omitempty"`
	Log        string   `protobuf:"bytes,7,opt,name=log" json:"log,omitempty"`
}

Consensus

• Block replay for app handshake is now done through consensus package, possibly using a mockApp.
• Check peer.Send for failure before updating PeerState

Types

• BlockMeta now contains BlockID instead of the Hash and PartSetHeader (so not compatible with older dbs)
• ValidatorSet.Proposer is exported and persisted

RPC

• /commit?height=X endpoint returns header and commit
• new client API for each endpoint, including mocks for testing

CLI

• tendermint gen_validator now produces machine readable output

Pull Requests

• Node refactor: Refactor Node; Node is a simple BaseService #369
• Build Binaries: make dist for creating binaries and packaging them for distribution #378
• Output all commands: Output all tendermint commands #379
• Update Dockerfile and move to Alpine: update Dockerfile #381 and [docker] move to alpine base image #395
• Cleanup gen_validator: [cli] cleanup gen_validator output #399
• Improve CircleCI: Improve CircleCI setup (WIP) #394
• Check peer.Send: Check peer.Send failures #373
• /commit RPC endpoint: Rpc commit #405
• Handshake replay through consensus/WAL: handshake replay through consensus using mockApp #408
• RPC Client API: Add flexible rpc client to tendermint #418