syntax = "proto3";
package tendermint.abci.types;
option  go_package = "github.com/tendermint/tendermint/abci/types";

// For more information on gogo.proto, see:
// https://github.com/gogo/protobuf/blob/master/extensions.md
import "crypto/merkle/merkle.proto";
import "google/protobuf/duration.proto";
import "google/protobuf/timestamp.proto";
import "third_party/proto/gogoproto/gogo.proto";

// This file is copied from http://github.com/tendermint/abci
// NOTE: When using custom types, mind the warnings.
// https://github.com/gogo/protobuf/blob/master/custom_types.md#warnings-and-issues

option (gogoproto.marshaler_all)        = true;
option (gogoproto.unmarshaler_all)      = true;
option (gogoproto.sizer_all)            = true;
option (gogoproto.goproto_registration) = true;

//----------------------------------------
// Request types

message Request {
  oneof value {
    RequestEcho               echo                 = 2;
    RequestFlush              flush                = 3;
    RequestInfo               info                 = 4;
    RequestSetOption          set_option           = 5;
    RequestInitChain          init_chain           = 6;
    RequestQuery              query                = 7;
    RequestBeginBlock         begin_block          = 8;
    RequestCheckTx            check_tx             = 9;
    RequestDeliverTx          deliver_tx           = 19;
    RequestEndBlock           end_block            = 11;
    RequestCommit             commit               = 12;
    RequestListSnapshots      list_snapshots       = 13;
    RequestOfferSnapshot      offer_snapshot       = 14;
    RequestLoadSnapshotChunk  load_snapshot_chunk  = 15;
    RequestApplySnapshotChunk apply_snapshot_chunk = 16;
  }
}

message RequestEcho {
  string message = 1;
}

message RequestFlush {}

message RequestInfo {
  string version       = 1;
  uint64 block_version = 2;
  uint64 p2p_version   = 3;
}

// nondeterministic
message RequestSetOption {
  string key   = 1;
  string value = 2;
}

message RequestInitChain {
  google.protobuf.Timestamp time             = 1
    [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];
  string                    chain_id         = 2;
  ConsensusParams           consensus_params = 3;
  repeated ValidatorUpdate  validators       = 4 [(gogoproto.nullable) = false];
  bytes                     app_state_bytes  = 5;
}

message RequestQuery {
  bytes  data   = 1;
  string path   = 2;
  int64  height = 3;
  bool   prove  = 4;
}

message RequestBeginBlock {
  bytes             hash                 = 1;
  Header            header               = 2 [(gogoproto.nullable) = false];
  LastCommitInfo    last_commit_info     = 3 [(gogoproto.nullable) = false];
  repeated Evidence byzantine_validators = 4 [(gogoproto.nullable) = false];
}

enum CheckTxType {
  New     = 0;
  Recheck = 1;
}

message RequestCheckTx {
  bytes       tx   = 1;
  CheckTxType type = 2;
}

message RequestDeliverTx {
  bytes tx = 1;
}

message RequestEndBlock {
  int64 height = 1;
}

message RequestCommit {}

// lists available snapshots
message RequestListSnapshots {
}

// offers a snapshot to the application
message RequestOfferSnapshot {
  Snapshot snapshot = 1;  // snapshot offered by peers
  bytes    app_hash = 2;  // light client-verified app hash for snapshot height
}

// loads a snapshot chunk
message RequestLoadSnapshotChunk {
  uint64 height = 1;
  uint32 format = 2;
  uint32 chunk  = 3;
}

// Applies a snapshot chunk
message RequestApplySnapshotChunk {
  uint32 index  = 1;
  bytes  chunk  = 2;
  string sender = 3;
}

//----------------------------------------
// Response types

message Response {
  oneof value {
    ResponseException          exception            = 1;
    ResponseEcho               echo                 = 2;
    ResponseFlush              flush                = 3;
    ResponseInfo               info                 = 4;
    ResponseSetOption          set_option           = 5;
    ResponseInitChain          init_chain           = 6;
    ResponseQuery              query                = 7;
    ResponseBeginBlock         begin_block          = 8;
    ResponseCheckTx            check_tx             = 9;
    ResponseDeliverTx          deliver_tx           = 10;
    ResponseEndBlock           end_block            = 11;
    ResponseCommit             commit               = 12;
    ResponseListSnapshots      list_snapshots       = 13;
    ResponseOfferSnapshot      offer_snapshot       = 14;
    ResponseLoadSnapshotChunk  load_snapshot_chunk  = 15;
    ResponseApplySnapshotChunk apply_snapshot_chunk = 16;
  }
}

// nondeterministic
message ResponseException {
  string error = 1;
}

message ResponseEcho {
  string message = 1;
}

message ResponseFlush {}

message ResponseInfo {
  string data = 1;

  string version     = 2;
  uint64 app_version = 3;

  int64 last_block_height   = 4;
  bytes last_block_app_hash = 5;
}

// nondeterministic
message ResponseSetOption {
  uint32 code = 1;
  // bytes data = 2;
  string log  = 3;
  string info = 4;
}

message ResponseInitChain {
  ConsensusParams          consensus_params = 1;
  repeated ValidatorUpdate validators       = 2 [(gogoproto.nullable) = false];
}

message ResponseQuery {
  uint32 code = 1;
  // bytes data = 2; // use "value" instead.
  string                         log       = 3;  // nondeterministic
  string                         info      = 4;  // nondeterministic
  int64                          index     = 5;
  bytes                          key       = 6;
  bytes                          value     = 7;
  tendermint.crypto.merkle.Proof proof     = 8;
  int64                          height    = 9;
  string                         codespace = 10;
}

message ResponseBeginBlock {
  repeated Event events = 1
    [(gogoproto.nullable) = false, (gogoproto.jsontag) = "events,omitempty"];
}

message ResponseCheckTx {
  uint32         code       = 1;
  bytes          data       = 2;
  string         log        = 3;  // nondeterministic
  string         info       = 4;  // nondeterministic
  int64          gas_wanted = 5;
  int64          gas_used   = 6;
  repeated Event events     = 7
    [(gogoproto.nullable) = false, (gogoproto.jsontag) = "events,omitempty"];
  string codespace = 8;
}

message ResponseDeliverTx {
  uint32         code       = 1;
  bytes          data       = 2;
  string         log        = 3;  // nondeterministic
  string         info       = 4;  // nondeterministic
  int64          gas_wanted = 5;
  int64          gas_used   = 6;
  repeated Event events     = 7
    [(gogoproto.nullable) = false, (gogoproto.jsontag) = "events,omitempty"];
  string codespace = 8;
}

message ResponseEndBlock {
  repeated ValidatorUpdate validator_updates       = 1
    [(gogoproto.nullable) = false];
  ConsensusParams          consensus_param_updates = 2;
  repeated Event           events                  = 3
    [(gogoproto.nullable) = false, (gogoproto.jsontag) = "events,omitempty"];
}

message ResponseCommit {
  // reserve 1
  bytes data          = 2;
  int64 retain_height = 3;
}

message ResponseListSnapshots {
  repeated Snapshot snapshots = 1;
}

message ResponseOfferSnapshot {
  Result result = 1;

  enum Result {
    ACCEPT        = 0;  // Snapshot accepted, apply chunks
    ABORT         = 1;  // Abort all snapshot restoration
    REJECT        = 2;  // Reject this specific snapshot, try others
    REJECT_FORMAT = 3;  // Reject all snapshots of this format, try others
    REJECT_SENDER = 4;  // Reject all snapshots from the sender(s), try others
  }
}

message ResponseLoadSnapshotChunk {
  bytes chunk = 1;
}

message ResponseApplySnapshotChunk {
  Result          result         = 1;
  repeated uint32 refetch_chunks = 2;  // Chunks to refetch and reapply
  repeated string reject_senders = 3;  // Chunk senders to reject and ban

  enum Result {
    ACCEPT          = 0;  // Chunk successfully accepted
    ABORT           = 1;  // Abort all snapshot restoration
    RETRY           = 2;  // Retry chunk (combine with refetch and reject)
    RETRY_SNAPSHOT  = 3;  // Retry snapshot (combine with refetch and reject)
    REJECT_SNAPSHOT = 4;  // Reject this snapshot, try others
  }
}

//----------------------------------------
// Misc.

// ConsensusParams contains all consensus-relevant parameters
// that can be adjusted by the abci app
message ConsensusParams {
  BlockParams     block     = 1;
  EvidenceParams  evidence  = 2;
  ValidatorParams validator = 3;
}

// BlockParams contains limits on the block size.
message BlockParams {
  // Note: must be greater than 0
  int64 max_bytes = 1;
  // Note: must be greater or equal to -1
  int64 max_gas = 2;
}

message EvidenceParams {
  // Note: must be greater than 0
  int64                    max_age_num_blocks = 1;
  google.protobuf.Duration max_age_duration   = 2
    [(gogoproto.nullable) = false, (gogoproto.stdduration) = true];
  uint32                   max_num            = 3;
}

// ValidatorParams contains limits on validators.
message ValidatorParams {
  repeated string pub_key_types = 1;
}

message LastCommitInfo {
  int32             round = 1;
  repeated VoteInfo votes = 2 [(gogoproto.nullable) = false];
}


// EventAttribute represents an event to the indexing service.
message EventAttribute {
  bytes key = 1;
  bytes value = 2;
  bool index = 3;
}

message Event {
  string   type                      = 1;
  repeated EventAttribute attributes = 2 [
    (gogoproto.nullable) = false,
    (gogoproto.jsontag) = "attributes,omitempty"];
}

//----------------------------------------
// Blockchain Types

message Header {
  // basic block info
  Version                   version  = 1 [(gogoproto.nullable) = false];
  string                    chain_id = 2 [(gogoproto.customname) = "ChainID"];
  int64                     height   = 3;
  google.protobuf.Timestamp time     = 4
    [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];

  // prev block info
  BlockID last_block_id = 5 [(gogoproto.nullable) = false];

  // hashes of block data
  bytes last_commit_hash = 6;  // commit from validators from the last block
  bytes data_hash        = 7;  // transactions

  // hashes from the app output from the prev block
  bytes validators_hash      = 8;   // validators for the current block
  bytes next_validators_hash = 9;   // validators for the next block
  bytes consensus_hash       = 10;  // consensus params for current block
  bytes app_hash             = 11;  // state after txs from the previous block
  bytes last_results_hash    = 12;  // root hash of tx results from prev block

  // consensus info
  bytes evidence_hash    = 13;  // evidence included in the block
  bytes proposer_address = 14;  // original proposer of the block
}

message Version {
  uint64 Block = 1;
  uint64 App   = 2;
}

message BlockID {
  bytes         hash         = 1;
  PartSetHeader parts_header = 2 [(gogoproto.nullable) = false];
}

message PartSetHeader {
  int32 total = 1;
  bytes hash  = 2;
}

// Validator
message Validator {
  bytes address = 1;
  // PubKey pub_key = 2 [(gogoproto.nullable)=false];
  int64 power = 3;
}

// ValidatorUpdate
message ValidatorUpdate {
  PubKey pub_key = 1 [(gogoproto.nullable) = false];
  int64  power   = 2;
}

// VoteInfo
message VoteInfo {
  Validator validator         = 1 [(gogoproto.nullable) = false];
  bool      signed_last_block = 2;
}

message PubKey {
  string type = 1;
  bytes  data = 2;
}

message Evidence {
  string                    type      = 1;
  Validator                 validator = 2 [(gogoproto.nullable) = false];
  int64                     height    = 3;
  google.protobuf.Timestamp time = 4 [
    (gogoproto.nullable) = false,
    (gogoproto.stdtime) = true];
  int64                     total_voting_power = 5;
}

//----------------------------------------
// State Sync Types

message Snapshot {
  uint64 height   = 1;  // The height at which the snapshot was taken
  uint32 format   = 2;  // The application-specific snapshot format
  uint32 chunks   = 3;  // Number of chunks in the snapshot
  bytes  hash     = 4;  // Arbitrary snapshot hash, equal only if identical
  bytes  metadata = 5;  // Arbitrary application metadata
}

//----------------------------------------
// Service Definition

service ABCIApplication {
  rpc Echo(RequestEcho) returns (ResponseEcho);
  rpc Flush(RequestFlush) returns (ResponseFlush);
  rpc Info(RequestInfo) returns (ResponseInfo);
  rpc SetOption(RequestSetOption) returns (ResponseSetOption);
  rpc DeliverTx(RequestDeliverTx) returns (ResponseDeliverTx);
  rpc CheckTx(RequestCheckTx) returns (ResponseCheckTx);
  rpc Query(RequestQuery) returns (ResponseQuery);
  rpc Commit(RequestCommit) returns (ResponseCommit);
  rpc InitChain(RequestInitChain) returns (ResponseInitChain);
  rpc BeginBlock(RequestBeginBlock) returns (ResponseBeginBlock);
  rpc EndBlock(RequestEndBlock) returns (ResponseEndBlock);
  rpc ListSnapshots(RequestListSnapshots) returns (ResponseListSnapshots);
  rpc OfferSnapshot(RequestOfferSnapshot) returns (ResponseOfferSnapshot);
  rpc LoadSnapshotChunk(RequestLoadSnapshotChunk) returns (ResponseLoadSnapshotChunk);
  rpc ApplySnapshotChunk(RequestApplySnapshotChunk) returns (ResponseApplySnapshotChunk);
}