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6
CHANGELOG.md
View File

@ -1,14 +1,18 @@
# Changelog
## 0.9.0 (TBD)
## 0.9.0 (December 28, 2017)
BREAKING CHANGES:
- [types] Id -> ID
- [types] ResponseEndBlock: renamed Diffs field to ValidatorUpdates
- [types] changed protobuf field indices for Request and Response oneof types
FEATURES:
- [types] ResponseEndBlock: added ConsensusParamUpdates
BUG FIXES:
- [cmd] fix console and batch commands to use a single persistent connection
## 0.8.0 (December 6, 2017)
BREAKING CHANGES:

104
README.md
View File

@ -13,7 +13,20 @@ The two guides to focus on are the `Application Development Guide` and `Using AB
Previously, the ABCI was referred to as TMSP.
The community has provided a number of addtional implementations, see the `Tendermint Ecosystem` in [the documentation](http://tendermint.readthedocs.io/en/master/).
The community has provided a number of addtional implementations, see the [Tendermint Ecosystem](https://tendermint.com/ecosystem)
## Specification
See the [spec file](specification.rst) for more information.
## Install
```
go get github.com/tendermint/abci
cd $GOPATH/src/github.com/tendermint/abci
make get_vendor_deps
make install
```
## Implementation
@ -24,13 +37,15 @@ We provide three implementations of the ABCI in Go:
- GRPC
Note the GRPC version is maintained primarily to simplify onboarding and prototyping and is not receiving the same
attention to security and performance as the others.
attention to security and performance as the others
### In Process
The simplest implementation just uses function calls within Go.
This means ABCI applications written in Golang can be compiled with TendermintCore and run as a single binary.
See the [examples](#examples) below for more information.
### Socket (TSP)
ABCI is best implemented as a streaming protocol.
@ -48,36 +63,85 @@ the ordered, asynchronous socket protocol. The implementation has also not recei
Note the length-prefixing used in the socket implementation does not apply for GRPC.
## Tools
## Usage
The `abci-cli` tool wraps an ABCI client and can be used for probing/testing an ABCI server.
For instance, `abci-cli test` will run a test sequence against a listening server running the Counter application (see below).
It can also be used to run some example applications.
See [the documentation](http://tendermint.readthedocs.io/en/master/) for more details.
### Example Apps
### Examples
Multiple example apps are included:
- the `abci-cli counter` application, which illustrates nonce checking in txs
- the `abci-cli dummy` application, which illustrates a simple key-value Merkle tree
- the `abci-cli dummy --persistent` application, which augments the dummy with persistence and validator set changes
Check out the variety of example applications in the [example directory](example/).
It also contains the code refered to by the `counter` and `dummy` apps; these apps come
built into the `abci-cli` binary.
### Install
#### Counter
```
go get github.com/tendermint/abci
cd $GOPATH/src/github.com/tendermint/abci
make get_vendor_deps
make install
The `abci-cli counter` application illustrates nonce checking in transactions. It's code looks like:
```golang
func cmdCounter(cmd *cobra.Command, args []string) error {
app := counter.NewCounterApplication(flagSerial)
logger := log.NewTMLogger(log.NewSyncWriter(os.Stdout))
// Start the listener
srv, err := server.NewServer(flagAddrC, flagAbci, app)
if err != nil {
return err
}
srv.SetLogger(logger.With("module", "abci-server"))
if err := srv.Start(); err != nil {
return err
}
// Wait forever
cmn.TrapSignal(func() {
// Cleanup
srv.Stop()
})
return nil
}
```
## Specification
and can be found in [this file](cmd/abci-cli/abci-cli.go).
The [primary specification](https://github.com/tendermint/abci/blob/master/types/types.proto) is made using Protocol Buffers.
To build it, run
#### Dummy
```
make protoc
The `abci-cli dummy` application, which illustrates a simple key-value Merkle tree
```golang
func cmdDummy(cmd *cobra.Command, args []string) error {
logger := log.NewTMLogger(log.NewSyncWriter(os.Stdout))
// Create the application - in memory or persisted to disk
var app types.Application
if flagPersist == "" {
app = dummy.NewDummyApplication()
} else {
app = dummy.NewPersistentDummyApplication(flagPersist)
app.(*dummy.PersistentDummyApplication).SetLogger(logger.With("module", "dummy"))
}
// Start the listener
srv, err := server.NewServer(flagAddrD, flagAbci, app)
if err != nil {
return err
}
srv.SetLogger(logger.With("module", "abci-server"))
if err := srv.Start(); err != nil {
return err
}
// Wait forever
cmn.TrapSignal(func() {
// Cleanup
srv.Stop()
})
return nil
}
```
See `protoc --help` and [the Protocol Buffers site](https://developers.google.com/protocol-buffers/) for details on compiling for other languages.
@ -200,3 +264,5 @@ Here, we describe the requests and responses as function arguments and return va
* `Log (string)`: Debug or error message
* __Usage__:<br/>
Return a Merkle root hash of the application state.
and can be found in [this file](cmd/abci-cli/abci-cli.go).

2
circle.yml
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@ -15,7 +15,7 @@ checkout:
test:
override:
- cd $REPO && make get_tools check build test_integrations
- cd $REPO && make get_tools check get_vendor_deps install test_integrations
post:
- cd "$REPO" && bash <(curl -s https://codecov.io/bash) -f coverage.txt
- cd "$REPO" && mv coverage.txt "${CIRCLE_ARTIFACTS}"

161
cmd/abci-cli/abci-cli.go
View File

@ -54,8 +54,8 @@ var (
var RootCmd = &cobra.Command{
Use: "abci-cli",
Short: "",
Long: "",
Short: "the ABCI CLI tool wraps an ABCI client",
Long: "the ABCI CLI tool wraps an ABCI client and is used for testing ABCI servers",
PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
switch cmd.Use {
@ -112,26 +112,26 @@ func Execute() error {
}
func addGlobalFlags() {
RootCmd.PersistentFlags().StringVarP(&flagAddress, "address", "", "tcp://0.0.0.0:46658", "Address of application socket")
RootCmd.PersistentFlags().StringVarP(&flagAbci, "abci", "", "socket", "Either socket or grpc")
RootCmd.PersistentFlags().BoolVarP(&flagVerbose, "verbose", "v", false, "Print the command and results as if it were a console session")
RootCmd.PersistentFlags().StringVarP(&flagLogLevel, "log_level", "", "debug", "Set the logger level")
RootCmd.PersistentFlags().StringVarP(&flagAddress, "address", "", "tcp://0.0.0.0:46658", "address of application socket")
RootCmd.PersistentFlags().StringVarP(&flagAbci, "abci", "", "socket", "either socket or grpc")
RootCmd.PersistentFlags().BoolVarP(&flagVerbose, "verbose", "v", false, "print the command and results as if it were a console session")
RootCmd.PersistentFlags().StringVarP(&flagLogLevel, "log_level", "", "debug", "set the logger level")
}
func addQueryFlags() {
queryCmd.PersistentFlags().StringVarP(&flagPath, "path", "", "/store", "Path to prefix query with")
queryCmd.PersistentFlags().IntVarP(&flagHeight, "height", "", 0, "Height to query the blockchain at")
queryCmd.PersistentFlags().BoolVarP(&flagProve, "prove", "", false, "Whether or not to return a merkle proof of the query result")
queryCmd.PersistentFlags().StringVarP(&flagPath, "path", "", "/store", "path to prefix query with")
queryCmd.PersistentFlags().IntVarP(&flagHeight, "height", "", 0, "height to query the blockchain at")
queryCmd.PersistentFlags().BoolVarP(&flagProve, "prove", "", false, "whether or not to return a merkle proof of the query result")
}
func addCounterFlags() {
counterCmd.PersistentFlags().StringVarP(&flagAddrC, "addr", "", "tcp://0.0.0.0:46658", "Listen address")
counterCmd.PersistentFlags().BoolVarP(&flagSerial, "serial", "", false, "Enforce incrementing (serial) transactions")
counterCmd.PersistentFlags().StringVarP(&flagAddrC, "addr", "", "tcp://0.0.0.0:46658", "listen address")
counterCmd.PersistentFlags().BoolVarP(&flagSerial, "serial", "", false, "enforce incrementing (serial) transactions")
}
func addDummyFlags() {
dummyCmd.PersistentFlags().StringVarP(&flagAddrD, "addr", "", "tcp://0.0.0.0:46658", "Listen address")
dummyCmd.PersistentFlags().StringVarP(&flagPersist, "persist", "", "", "Directory to use for a database")
dummyCmd.PersistentFlags().StringVarP(&flagAddrD, "addr", "", "tcp://0.0.0.0:46658", "listen address")
dummyCmd.PersistentFlags().StringVarP(&flagPersist, "persist", "", "", "directory to use for a database")
}
func addCommands() {
RootCmd.AddCommand(batchCmd)
@ -156,8 +156,25 @@ func addCommands() {
var batchCmd = &cobra.Command{
Use: "batch",
Short: "Run a batch of abci commands against an application",
Long: "",
Short: "run a batch of abci commands against an application",
Long: `run a batch of abci commands against an application
This command is run by piping in a file containing a series of commands
you'd like to run:
abci-cli batch < example.file
where example.file looks something like:
set_option serial on
check_tx 0x00
check_tx 0xff
deliver_tx 0x00
check_tx 0x00
deliver_tx 0x01
deliver_tx 0x04
info
`,
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdBatch(cmd, args)
@ -166,8 +183,12 @@ var batchCmd = &cobra.Command{
var consoleCmd = &cobra.Command{
Use: "console",
Short: "Start an interactive abci console for multiple commands",
Long: "",
Short: "start an interactive ABCI console for multiple commands",
Long: `start an interactive ABCI console for multiple commands
This command opens an interactive console for running any of the other commands
without opening a new connection each time
`,
Args: cobra.ExactArgs(0),
ValidArgs: []string{"echo", "info", "set_option", "deliver_tx", "check_tx", "commit", "query"},
RunE: func(cmd *cobra.Command, args []string) error {
@ -177,8 +198,8 @@ var consoleCmd = &cobra.Command{
var echoCmd = &cobra.Command{
Use: "echo",
Short: "Have the application echo a message",
Long: "",
Short: "have the application echo a message",
Long: "have the application echo a message",
Args: cobra.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdEcho(cmd, args)
@ -186,8 +207,8 @@ var echoCmd = &cobra.Command{
}
var infoCmd = &cobra.Command{
Use: "info",
Short: "Get some info about the application",
Long: "",
Short: "get some info about the application",
Long: "get some info about the application",
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdInfo(cmd, args)
@ -195,8 +216,8 @@ var infoCmd = &cobra.Command{
}
var setOptionCmd = &cobra.Command{
Use: "set_option",
Short: "Set an option on the application",
Long: "",
Short: "set an option on the application",
Long: "set an option on the application",
Args: cobra.ExactArgs(2),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdSetOption(cmd, args)
@ -205,8 +226,8 @@ var setOptionCmd = &cobra.Command{
var deliverTxCmd = &cobra.Command{
Use: "deliver_tx",
Short: "Deliver a new transaction to the application",
Long: "",
Short: "deliver a new transaction to the application",
Long: "deliver a new transaction to the application",
Args: cobra.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdDeliverTx(cmd, args)
@ -215,8 +236,8 @@ var deliverTxCmd = &cobra.Command{
var checkTxCmd = &cobra.Command{
Use: "check_tx",
Short: "Validate a transaction",
Long: "",
Short: "validate a transaction",
Long: "validate a transaction",
Args: cobra.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdCheckTx(cmd, args)
@ -225,8 +246,8 @@ var checkTxCmd = &cobra.Command{
var commitCmd = &cobra.Command{
Use: "commit",
Short: "Commit the application state and return the Merkle root hash",
Long: "",
Short: "commit the application state and return the Merkle root hash",
Long: "commit the application state and return the Merkle root hash",
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdCommit(cmd, args)
@ -235,8 +256,8 @@ var commitCmd = &cobra.Command{
var versionCmd = &cobra.Command{
Use: "version",
Short: "Print abci console version",
Long: "",
Short: "print ABCI console version",
Long: "print ABCI console version",
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
fmt.Println(version.Version)
@ -246,8 +267,8 @@ var versionCmd = &cobra.Command{
var queryCmd = &cobra.Command{
Use: "query",
Short: "Query the application state",
Long: "",
Short: "query the application state",
Long: "query the application state",
Args: cobra.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdQuery(cmd, args)
@ -257,7 +278,7 @@ var queryCmd = &cobra.Command{
var counterCmd = &cobra.Command{
Use: "counter",
Short: "ABCI demo example",
Long: "",
Long: "ABCI demo example",
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdCounter(cmd, args)
@ -267,7 +288,7 @@ var counterCmd = &cobra.Command{
var dummyCmd = &cobra.Command{
Use: "dummy",
Short: "ABCI demo example",
Long: "",
Long: "ABCI demo example",
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdDummy(cmd, args)
@ -276,8 +297,8 @@ var dummyCmd = &cobra.Command{
var testCmd = &cobra.Command{
Use: "test",
Short: "Run integration tests",
Long: "",
Short: "run integration tests",
Long: "run integration tests",
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
return cmdTest(cmd, args)
@ -300,49 +321,39 @@ func persistentArgs(line []byte) []string {
//--------------------------------------------------------------------------------
func or(err1 error, err2 error) error {
if err1 == nil {
return err2
func compose(fs []func() error) error {
if len(fs) == 0 {
return nil
} else {
return err1
err := fs[0]()
if err == nil {
return compose(fs[1:])
} else {
return err
}
}
}
func cmdTest(cmd *cobra.Command, args []string) error {
fmt.Println("Running tests")
err := servertest.InitChain(client)
fmt.Println("")
err = or(err, servertest.SetOption(client, "serial", "on"))
fmt.Println("")
err = or(err, servertest.Commit(client, nil))
fmt.Println("")
err = or(err, servertest.DeliverTx(client, []byte("abc"), code.CodeTypeBadNonce, nil))
fmt.Println("")
err = or(err, servertest.Commit(client, nil))
fmt.Println("")
err = or(err, servertest.DeliverTx(client, []byte{0x00}, code.CodeTypeOK, nil))
fmt.Println("")
err = or(err, servertest.Commit(client, []byte{0, 0, 0, 0, 0, 0, 0, 1}))
fmt.Println("")
err = or(err, servertest.DeliverTx(client, []byte{0x00}, code.CodeTypeBadNonce, nil))
fmt.Println("")
err = or(err, servertest.DeliverTx(client, []byte{0x01}, code.CodeTypeOK, nil))
fmt.Println("")
err = or(err, servertest.DeliverTx(client, []byte{0x00, 0x02}, code.CodeTypeOK, nil))
fmt.Println("")
err = or(err, servertest.DeliverTx(client, []byte{0x00, 0x03}, code.CodeTypeOK, nil))
fmt.Println("")
err = or(err, servertest.DeliverTx(client, []byte{0x00, 0x00, 0x04}, code.CodeTypeOK, nil))
fmt.Println("")
err = or(err, servertest.DeliverTx(client, []byte{0x00, 0x00, 0x06}, code.CodeTypeBadNonce, nil))
fmt.Println("")
err = or(err, servertest.Commit(client, []byte{0, 0, 0, 0, 0, 0, 0, 5}))
if err != nil {
return errors.New("Some checks didn't pass, please inspect stdout to see the exact failures.")
}
return nil
return compose(
[]func() error{
func() error { return servertest.InitChain(client) },
func() error { return servertest.SetOption(client, "serial", "on") },
func() error { return servertest.Commit(client, nil) },
func() error { return servertest.DeliverTx(client, []byte("abc"), code.CodeTypeBadNonce, nil) },
func() error { return servertest.Commit(client, nil) },
func() error { return servertest.DeliverTx(client, []byte{0x00}, code.CodeTypeOK, nil) },
func() error { return servertest.Commit(client, []byte{0, 0, 0, 0, 0, 0, 0, 1}) },
func() error { return servertest.DeliverTx(client, []byte{0x00}, code.CodeTypeBadNonce, nil) },
func() error { return servertest.DeliverTx(client, []byte{0x01}, code.CodeTypeOK, nil) },
func() error { return servertest.DeliverTx(client, []byte{0x00, 0x02}, code.CodeTypeOK, nil) },
func() error { return servertest.DeliverTx(client, []byte{0x00, 0x03}, code.CodeTypeOK, nil) },
func() error { return servertest.DeliverTx(client, []byte{0x00, 0x00, 0x04}, code.CodeTypeOK, nil) },
func() error {
return servertest.DeliverTx(client, []byte{0x00, 0x00, 0x06}, code.CodeTypeBadNonce, nil)
},
func() error { return servertest.Commit(client, []byte{0, 0, 0, 0, 0, 0, 0, 5}) },
})
}
func cmdBatch(cmd *cobra.Command, args []string) error {

221
specification.rst Normal file
View File

@ -0,0 +1,221 @@
Specification
=============
The `primary
specification <https://github.com/tendermint/abci/blob/master/types/types.proto>`__
is made using Protocol Buffers. To build it, run
::
make protoc
See ``protoc --help`` and `the Protocol Buffers
site <https://developers.google.com/protocol-buffers/>`__ for details on
compiling for other languages. Note we also include a
`GRPC <http://www.grpc.io/docs>`__ service definition.
For the specification as an interface in Go, see the
`types/application.go
file <https://github.com/tendermint/abci/blob/master/types/application.go>`__.
Message Types
~~~~~~~~~~~~~
ABCI requests/responses are defined as simple Protobuf messages in `this
schema
file <https://github.com/tendermint/abci/blob/master/types/types.proto>`__.
TendermintCore sends the requests, and the ABCI application sends the
responses. Here, we describe the requests and responses as function
arguments and return values, and make some notes about usage:
Echo
^^^^
- **Arguments**:
- ``Message (string)``: A string to echo back
- **Returns**:
- ``Message (string)``: The input string
- **Usage**:
- Echo a string to test an abci client/server implementation
Flush
^^^^^
- **Usage**:
- Signals that messages queued on the client should be flushed to
the server. It is called periodically by the client implementation
to ensure asynchronous requests are actually sent, and is called
immediately to make a synchronous request, which returns when the
Flush response comes back.
Info
^^^^
- **Returns**:
- ``Data (string)``: Some arbitrary information
- ``Version (Version)``: Version information
- ``LastBlockHeight (int64)``: Latest block for which the app has
called Commit
- ``LastBlockAppHash ([]byte)``: Latest result of Commit
- **Usage**: Return information about the application state. Used to
sync the app with Tendermint on crash/restart.
SetOption
^^^^^^^^^
- **Arguments**:
- ``Key (string)``: Key to set
- ``Value (string)``: Value to set for key
- **Returns**:
- ``Code (uint32)``: Response code
- ``Log (string)``: Debug or error message
- **Usage**: Set application options. E.g. Key="mode", Value="mempool"
for a mempool connection, or Key="mode", Value="consensus" for a
consensus connection. Other options are application specific.
InitChain
^^^^^^^^^
- **Arguments**:
- ``Validators ([]Validator)``: Initial genesis validators
- **Usage**: Called once upon genesis
Query
^^^^^
- **Arguments**:
- ``Data ([]byte)``: Raw query bytes. Can be used with or in lieu of
Path.
- ``Path (string)``: Path of request, like an HTTP GET path. Can be
used with or in liue of Data.
- Apps MUST interpret '/store' as a query by key on the underlying
store. The key SHOULD be specified in the Data field.
- Apps SHOULD allow queries over specific types like '/accounts/...'
or '/votes/...'
- ``Height (int64)``: The block height for which you want the query
(default=0 returns data for the latest committed block). Note that
this is the height of the block containing the application's
Merkle root hash, which represents the state as it was after
committing the block at Height-1
- ``Prove (bool)``: Return Merkle proof with response if possible
- **Returns**:
- ``Code (uint32)``: Response code
- ``Key ([]byte)``: The key of the matching data
- ``Value ([]byte)``: The value of the matching data
- ``Proof ([]byte)``: Proof for the data, if requested
- ``Height (int64)``: The block height from which data was derived.
Note that this is the height of the block containing the
application's Merkle root hash, which represents the state as it
was after committing the block at Height-1
- ``Log (string)``: Debug or error message
BeginBlock
^^^^^^^^^^
- **Arguments**:
- ``Hash ([]byte)``: The block's hash. This can be derived from the
block header.
- ``Header (struct{})``: The block header
- ``AbsentValidators ([]int32)``: List of indices of validators not
included in the LastCommit
- ``ByzantineValidators ([]Evidence)``: List of evidence of
validators that acted maliciously
- **Usage**: Signals the beginning of a new block. Called prior to any
DeliverTxs. The header is expected to at least contain the Height.
The ``AbsentValidators`` and ``ByzantineValidators`` can be used to
determine rewards and punishments for the validators.
CheckTx
^^^^^^^
- **Arguments**:
- ``Data ([]byte)``: The request transaction bytes
- **Returns**:
- ``Code (uint32)``: Response code
- ``Data ([]byte)``: Result bytes, if any
- ``Log (string)``: Debug or error message
- ``Gas (int64)``: Amount of gas consumed by transaction
- ``Fee (int64)``: Fee paid by transaction
- **Usage**: Validate a mempool transaction, prior to broadcasting or
proposing. This message should not mutate the main state, but
application developers may want to keep a separate CheckTx state that
gets reset upon Commit.
CheckTx can happen interspersed with DeliverTx, but they happen on
different ABCI connections - CheckTx from the mempool connection, and
DeliverTx from the consensus connection. During Commit, the mempool
is locked, so you can reset the mempool state to the latest state
after running all those DeliverTxs, and then the mempool will re-run
whatever txs it has against that latest mempool state.
Transactions are first run through CheckTx before broadcast to peers
in the mempool layer. You can make CheckTx semi-stateful and clear
the state upon ``Commit`` or ``BeginBlock``, to allow for dependent
sequences of transactions in the same block.
DeliverTx
^^^^^^^^^
- **Arguments**:
- ``Data ([]byte)``: The request transaction bytes
- **Returns**:
- ``Code (uint32)``: Response code
- ``Data ([]byte)``: Result bytes, if any
- ``Log (string)``: Debug or error message
- ``Tags ([]*KVPair)``: Optional tags for indexing
- **Usage**: Append and run a transaction. If the transaction is valid,
returns CodeType.OK
EndBlock
^^^^^^^^
- **Arguments**:
- ``Height (int64)``: The block height that ended
- **Returns**:
- ``ValidatorUpdates ([]Validator)``: Changes to validator set (set
voting power to 0 to remove)
- ``ConsensusParamUpdates (ConsensusParams)``: Changes to
consensus-critical time/size parameters
- **Usage**: Signals the end of a block. Called prior to each Commit
after all transactions. Validator set is updated with the result.
Commit
^^^^^^
- **Returns**:
- ``Data ([]byte)``: The Merkle root hash
- ``Log (string)``: Debug or error message
- **Usage**: Return a Merkle root hash of the application state.

4
tests/test_cli/test.sh
View File

@ -20,8 +20,8 @@ function testExample() {
abci-cli --log_level=error --verbose batch < "$INPUT" > "${INPUT}.out.new"
killall "$3"
pre=$(shasum < "${INPUT}.out")
post=$(shasum < "${INPUT}.out.new")
pre=$(sha256sum < "${INPUT}.out")
post=$(sha256sum < "${INPUT}.out.new")
if [[ "$pre" != "$post" ]]; then
echo "You broke the tutorial"

4
version/version.go
View File

@ -3,7 +3,7 @@ package version
// NOTE: we should probably be versioning the ABCI and the abci-cli separately
const Maj = "0"
const Min = "8"
const Min = "9"
const Fix = "0"
const Version = "0.8.0"
const Version = "0.9.0"