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chaincode_support.go
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chaincode_support.go
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/*
Copyright IBM Corp. 2016 All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package chaincode
import (
"bytes"
"fmt"
"io"
"strconv"
"sync"
"time"
"github.com/golang/protobuf/proto"
"github.com/spf13/viper"
"golang.org/x/net/context"
"strings"
"github.com/hyperledger/fabric/core/container"
"github.com/hyperledger/fabric/core/container/ccintf"
"github.com/hyperledger/fabric/core/crypto"
"github.com/hyperledger/fabric/core/ledger"
pb "github.com/hyperledger/fabric/protos"
)
// ChainName is the name of the chain to which this chaincode support belongs to.
type ChainName string
const (
// DefaultChain is the name of the default chain.
DefaultChain ChainName = "default"
// DevModeUserRunsChaincode property allows user to run chaincode in development environment
DevModeUserRunsChaincode string = "dev"
chaincodeStartupTimeoutDefault int = 5000
chaincodeInstallPathDefault string = "/opt/gopath/bin/"
peerAddressDefault string = "0.0.0.0:7051"
)
// chains is a map between different blockchains and their ChaincodeSupport.
//this needs to be a first class, top-level object... for now, lets just have a placeholder
var chains map[ChainName]*ChaincodeSupport
func init() {
chains = make(map[ChainName]*ChaincodeSupport)
}
//chaincode runtime environment encapsulates handler and container environment
//This is where the VM that's running the chaincode would hook in
type chaincodeRTEnv struct {
handler *Handler
}
// runningChaincodes contains maps of chaincodeIDs to their chaincodeRTEs
type runningChaincodes struct {
sync.RWMutex
// chaincode environment for each chaincode
chaincodeMap map[string]*chaincodeRTEnv
}
// GetChain returns the chaincode support for a given chain
func GetChain(name ChainName) *ChaincodeSupport {
return chains[name]
}
//call this under lock
func (chaincodeSupport *ChaincodeSupport) preLaunchSetup(chaincode string) chan bool {
//register placeholder Handler. This will be transferred in registerHandler
//NOTE: from this point, existence of handler for this chaincode means the chaincode
//is in the process of getting started (or has been started)
notfy := make(chan bool, 1)
chaincodeSupport.runningChaincodes.chaincodeMap[chaincode] = &chaincodeRTEnv{handler: &Handler{readyNotify: notfy}}
return notfy
}
//call this under lock
func (chaincodeSupport *ChaincodeSupport) chaincodeHasBeenLaunched(chaincode string) (*chaincodeRTEnv, bool) {
chrte, hasbeenlaunched := chaincodeSupport.runningChaincodes.chaincodeMap[chaincode]
return chrte, hasbeenlaunched
}
// NewChaincodeSupport creates a new ChaincodeSupport instance
func NewChaincodeSupport(chainname ChainName, getPeerEndpoint func() (*pb.PeerEndpoint, error), userrunsCC bool, ccstartuptimeout time.Duration, secHelper crypto.Peer) *ChaincodeSupport {
pnid := viper.GetString("peer.networkId")
pid := viper.GetString("peer.id")
s := &ChaincodeSupport{name: chainname, runningChaincodes: &runningChaincodes{chaincodeMap: make(map[string]*chaincodeRTEnv)}, secHelper: secHelper, peerNetworkID: pnid, peerID: pid}
//initialize global chain
chains[chainname] = s
peerEndpoint, err := getPeerEndpoint()
if err != nil {
chaincodeLogger.Errorf("Error getting PeerEndpoint, using peer.address: %s", err)
s.peerAddress = viper.GetString("peer.address")
} else {
s.peerAddress = peerEndpoint.Address
}
chaincodeLogger.Infof("Chaincode support using peerAddress: %s\n", s.peerAddress)
//peerAddress = viper.GetString("peer.address")
if s.peerAddress == "" {
s.peerAddress = peerAddressDefault
}
s.userRunsCC = userrunsCC
s.ccStartupTimeout = ccstartuptimeout
//TODO I'm not sure if this needs to be on a per chain basis... too lowel and just needs to be a global default ?
s.chaincodeInstallPath = viper.GetString("chaincode.installpath")
if s.chaincodeInstallPath == "" {
s.chaincodeInstallPath = chaincodeInstallPathDefault
}
s.peerTLS = viper.GetBool("peer.tls.enabled")
if s.peerTLS {
s.peerTLSCertFile = viper.GetString("peer.tls.cert.file")
s.peerTLSKeyFile = viper.GetString("peer.tls.key.file")
s.peerTLSSvrHostOrd = viper.GetString("peer.tls.serverhostoverride")
}
kadef := 0
if ka := viper.GetString("chaincode.keepalive"); ka == "" {
s.keepalive = time.Duration(kadef) * time.Second
} else {
t, terr := strconv.Atoi(ka)
if terr != nil {
chaincodeLogger.Errorf("Invalid keepalive value %s (%s) defaulting to %d", ka, terr, kadef)
t = kadef
} else if t <= 0 {
chaincodeLogger.Debugf("Turn off keepalive(value %s)", ka)
t = kadef
}
s.keepalive = time.Duration(t) * time.Second
}
return s
}
// // ChaincodeStream standard stream for ChaincodeMessage type.
// type ChaincodeStream interface {
// Send(*pb.ChaincodeMessage) error
// Recv() (*pb.ChaincodeMessage, error)
// }
// ChaincodeSupport responsible for providing interfacing with chaincodes from the Peer.
type ChaincodeSupport struct {
name ChainName
runningChaincodes *runningChaincodes
peerAddress string
ccStartupTimeout time.Duration
chaincodeInstallPath string
userRunsCC bool
secHelper crypto.Peer
peerNetworkID string
peerID string
peerTLS bool
peerTLSCertFile string
peerTLSKeyFile string
peerTLSSvrHostOrd string
keepalive time.Duration
}
// DuplicateChaincodeHandlerError returned if attempt to register same chaincodeID while a stream already exists.
type DuplicateChaincodeHandlerError struct {
ChaincodeID *pb.ChaincodeID
}
func (d *DuplicateChaincodeHandlerError) Error() string {
return fmt.Sprintf("Duplicate chaincodeID error: %s", d.ChaincodeID)
}
func newDuplicateChaincodeHandlerError(chaincodeHandler *Handler) error {
return &DuplicateChaincodeHandlerError{ChaincodeID: chaincodeHandler.ChaincodeID}
}
func (chaincodeSupport *ChaincodeSupport) registerHandler(chaincodehandler *Handler) error {
key := chaincodehandler.ChaincodeID.Name
chaincodeSupport.runningChaincodes.Lock()
defer chaincodeSupport.runningChaincodes.Unlock()
chrte2, ok := chaincodeSupport.chaincodeHasBeenLaunched(key)
if ok && chrte2.handler.registered == true {
chaincodeLogger.Debugf("duplicate registered handler(key:%s) return error", key)
// Duplicate, return error
return newDuplicateChaincodeHandlerError(chaincodehandler)
}
//a placeholder, unregistered handler will be setup by query or transaction processing that comes
//through via consensus. In this case we swap the handler and give it the notify channel
if chrte2 != nil {
chaincodehandler.readyNotify = chrte2.handler.readyNotify
chrte2.handler = chaincodehandler
} else {
chaincodeSupport.runningChaincodes.chaincodeMap[key] = &chaincodeRTEnv{handler: chaincodehandler}
}
chaincodehandler.registered = true
//now we are ready to receive messages and send back responses
chaincodehandler.txCtxs = make(map[string]*transactionContext)
chaincodehandler.txidMap = make(map[string]bool)
chaincodehandler.isTransaction = make(map[string]bool)
chaincodeLogger.Debugf("registered handler complete for chaincode %s", key)
return nil
}
func (chaincodeSupport *ChaincodeSupport) deregisterHandler(chaincodehandler *Handler) error {
// clean up rangeQueryIteratorMap
for _, context := range chaincodehandler.txCtxs {
for _, v := range context.rangeQueryIteratorMap {
v.Close()
}
}
key := chaincodehandler.ChaincodeID.Name
chaincodeLogger.Debugf("Deregister handler: %s", key)
chaincodeSupport.runningChaincodes.Lock()
defer chaincodeSupport.runningChaincodes.Unlock()
if _, ok := chaincodeSupport.chaincodeHasBeenLaunched(key); !ok {
// Handler NOT found
return fmt.Errorf("Error deregistering handler, could not find handler with key: %s", key)
}
delete(chaincodeSupport.runningChaincodes.chaincodeMap, key)
chaincodeLogger.Debugf("Deregistered handler with key: %s", key)
return nil
}
// Based on state of chaincode send either init or ready to move to ready state
func (chaincodeSupport *ChaincodeSupport) sendInitOrReady(context context.Context, txid string, chaincode string, initArgs [][]byte, timeout time.Duration, tx *pb.Transaction, depTx *pb.Transaction) error {
chaincodeSupport.runningChaincodes.Lock()
//if its in the map, there must be a connected stream...nothing to do
var chrte *chaincodeRTEnv
var ok bool
if chrte, ok = chaincodeSupport.chaincodeHasBeenLaunched(chaincode); !ok {
chaincodeSupport.runningChaincodes.Unlock()
chaincodeLogger.Debugf("handler not found for chaincode %s", chaincode)
return fmt.Errorf("handler not found for chaincode %s", chaincode)
}
chaincodeSupport.runningChaincodes.Unlock()
var notfy chan *pb.ChaincodeMessage
var err error
if notfy, err = chrte.handler.initOrReady(txid, initArgs, tx, depTx); err != nil {
return fmt.Errorf("Error sending %s: %s", pb.ChaincodeMessage_INIT, err)
}
if notfy != nil {
select {
case ccMsg := <-notfy:
if ccMsg.Type == pb.ChaincodeMessage_ERROR {
err = fmt.Errorf("Error initializing container %s: %s", chaincode, string(ccMsg.Payload))
}
case <-time.After(timeout):
err = fmt.Errorf("Timeout expired while executing send init message")
}
}
//if initOrReady succeeded, our responsibility to delete the context
chrte.handler.deleteTxContext(txid)
return err
}
//get args and env given chaincodeID
func (chaincodeSupport *ChaincodeSupport) getArgsAndEnv(cID *pb.ChaincodeID, cLang pb.ChaincodeSpec_Type) (args []string, envs []string, err error) {
envs = []string{"CORE_CHAINCODE_ID_NAME=" + cID.Name}
//if TLS is enabled, pass TLS material to chaincode
if chaincodeSupport.peerTLS {
envs = append(envs, "CORE_PEER_TLS_ENABLED=true")
envs = append(envs, "CORE_PEER_TLS_CERT_FILE="+chaincodeSupport.peerTLSCertFile)
if chaincodeSupport.peerTLSSvrHostOrd != "" {
envs = append(envs, "CORE_PEER_TLS_SERVERHOSTOVERRIDE="+chaincodeSupport.peerTLSSvrHostOrd)
}
} else {
envs = append(envs, "CORE_PEER_TLS_ENABLED=false")
}
switch cLang {
case pb.ChaincodeSpec_GOLANG, pb.ChaincodeSpec_CAR:
//chaincode executable will be same as the name of the chaincode
args = []string{chaincodeSupport.chaincodeInstallPath + cID.Name, fmt.Sprintf("-peer.address=%s", chaincodeSupport.peerAddress)}
chaincodeLogger.Debugf("Executable is %s", args[0])
case pb.ChaincodeSpec_JAVA:
//TODO add security args
args = strings.Split(
fmt.Sprintf("java -jar chaincode.jar -a %s -i %s",
chaincodeSupport.peerAddress, cID.Name),
" ")
if chaincodeSupport.peerTLS {
args = append(args, " -s")
}
chaincodeLogger.Debugf("Executable is %s", args[0])
default:
return nil, nil, fmt.Errorf("Unknown chaincodeType: %s", cLang)
}
return args, envs, nil
}
// launchAndWaitForRegister will launch container if not already running. Use the targz to create the image if not found
func (chaincodeSupport *ChaincodeSupport) launchAndWaitForRegister(ctxt context.Context, cds *pb.ChaincodeDeploymentSpec, cID *pb.ChaincodeID, txid string, cLang pb.ChaincodeSpec_Type, targz io.Reader) (bool, error) {
chaincode := cID.Name
if chaincode == "" {
return false, fmt.Errorf("chaincode name not set")
}
chaincodeSupport.runningChaincodes.Lock()
var ok bool
//if its in the map, there must be a connected stream...nothing to do
if _, ok = chaincodeSupport.chaincodeHasBeenLaunched(chaincode); ok {
chaincodeLogger.Debugf("chaincode is running and ready: %s", chaincode)
chaincodeSupport.runningChaincodes.Unlock()
return true, nil
}
alreadyRunning := false
notfy := chaincodeSupport.preLaunchSetup(chaincode)
chaincodeSupport.runningChaincodes.Unlock()
//launch the chaincode
args, env, err := chaincodeSupport.getArgsAndEnv(cID, cLang)
if err != nil {
return alreadyRunning, err
}
chaincodeLogger.Debugf("start container: %s(networkid:%s,peerid:%s)", chaincode, chaincodeSupport.peerNetworkID, chaincodeSupport.peerID)
vmtype, _ := chaincodeSupport.getVMType(cds)
sir := container.StartImageReq{CCID: ccintf.CCID{ChaincodeSpec: cds.ChaincodeSpec, NetworkID: chaincodeSupport.peerNetworkID, PeerID: chaincodeSupport.peerID}, Reader: targz, Args: args, Env: env}
ipcCtxt := context.WithValue(ctxt, ccintf.GetCCHandlerKey(), chaincodeSupport)
resp, err := container.VMCProcess(ipcCtxt, vmtype, sir)
if err != nil || (resp != nil && resp.(container.VMCResp).Err != nil) {
if err == nil {
err = resp.(container.VMCResp).Err
}
err = fmt.Errorf("Error starting container: %s", err)
chaincodeSupport.runningChaincodes.Lock()
delete(chaincodeSupport.runningChaincodes.chaincodeMap, chaincode)
chaincodeSupport.runningChaincodes.Unlock()
return alreadyRunning, err
}
//wait for REGISTER state
select {
case ok := <-notfy:
if !ok {
err = fmt.Errorf("registration failed for %s(networkid:%s,peerid:%s,tx:%s)", chaincode, chaincodeSupport.peerNetworkID, chaincodeSupport.peerID, txid)
}
case <-time.After(chaincodeSupport.ccStartupTimeout):
err = fmt.Errorf("Timeout expired while starting chaincode %s(networkid:%s,peerid:%s,tx:%s)", chaincode, chaincodeSupport.peerNetworkID, chaincodeSupport.peerID, txid)
}
if err != nil {
chaincodeLogger.Debugf("stopping due to error while launching %s", err)
errIgnore := chaincodeSupport.Stop(ctxt, cds)
if errIgnore != nil {
chaincodeLogger.Debugf("error on stop %s(%s)", errIgnore, err)
}
}
return alreadyRunning, err
}
//Stop stops a chaincode if running
func (chaincodeSupport *ChaincodeSupport) Stop(context context.Context, cds *pb.ChaincodeDeploymentSpec) error {
chaincode := cds.ChaincodeSpec.ChaincodeID.Name
if chaincode == "" {
return fmt.Errorf("chaincode name not set")
}
//stop the chaincode
sir := container.StopImageReq{CCID: ccintf.CCID{ChaincodeSpec: cds.ChaincodeSpec, NetworkID: chaincodeSupport.peerNetworkID, PeerID: chaincodeSupport.peerID}, Timeout: 0}
vmtype, _ := chaincodeSupport.getVMType(cds)
_, err := container.VMCProcess(context, vmtype, sir)
if err != nil {
err = fmt.Errorf("Error stopping container: %s", err)
//but proceed to cleanup
}
chaincodeSupport.runningChaincodes.Lock()
if _, ok := chaincodeSupport.chaincodeHasBeenLaunched(chaincode); !ok {
//nothing to do
chaincodeSupport.runningChaincodes.Unlock()
return nil
}
delete(chaincodeSupport.runningChaincodes.chaincodeMap, chaincode)
chaincodeSupport.runningChaincodes.Unlock()
return err
}
// Launch will launch the chaincode if not running (if running return nil) and will wait for handler of the chaincode to get into FSM ready state.
func (chaincodeSupport *ChaincodeSupport) Launch(context context.Context, t *pb.Transaction) (*pb.ChaincodeID, *pb.ChaincodeInput, error) {
//build the chaincode
var cID *pb.ChaincodeID
var cMsg *pb.ChaincodeInput
var cLang pb.ChaincodeSpec_Type
var initargs [][]byte
cds := &pb.ChaincodeDeploymentSpec{}
if t.Type == pb.Transaction_CHAINCODE_DEPLOY {
err := proto.Unmarshal(t.Payload, cds)
if err != nil {
return nil, nil, err
}
cID = cds.ChaincodeSpec.ChaincodeID
cMsg = cds.ChaincodeSpec.CtorMsg
cLang = cds.ChaincodeSpec.Type
initargs = cMsg.Args
} else if t.Type == pb.Transaction_CHAINCODE_INVOKE || t.Type == pb.Transaction_CHAINCODE_QUERY {
ci := &pb.ChaincodeInvocationSpec{}
err := proto.Unmarshal(t.Payload, ci)
if err != nil {
return nil, nil, err
}
cID = ci.ChaincodeSpec.ChaincodeID
cMsg = ci.ChaincodeSpec.CtorMsg
} else {
chaincodeSupport.runningChaincodes.Unlock()
return nil, nil, fmt.Errorf("invalid transaction type: %d", t.Type)
}
chaincode := cID.Name
chaincodeSupport.runningChaincodes.Lock()
var chrte *chaincodeRTEnv
var ok bool
var err error
//if its in the map, there must be a connected stream...nothing to do
if chrte, ok = chaincodeSupport.chaincodeHasBeenLaunched(chaincode); ok {
if !chrte.handler.registered {
chaincodeSupport.runningChaincodes.Unlock()
chaincodeLogger.Debugf("premature execution - chaincode (%s) is being launched", chaincode)
err = fmt.Errorf("premature execution - chaincode (%s) is being launched", chaincode)
return cID, cMsg, err
}
if chrte.handler.isRunning() {
chaincodeLogger.Debugf("chaincode is running(no need to launch) : %s", chaincode)
chaincodeSupport.runningChaincodes.Unlock()
return cID, cMsg, nil
}
chaincodeLogger.Debugf("Container not in READY state(%s)...send init/ready", chrte.handler.FSM.Current())
}
chaincodeSupport.runningChaincodes.Unlock()
var depTx *pb.Transaction
//extract depTx so we can initialize hander.deployTXSecContext
//we need it only after container is launched and only if this is not a deploy tx
//NOTE: ideally this section should be moved before just before sendInitOrReady where
// where we need depTx. However, as we don't check for ExecuteTransactions failure
// in consensus/helper, the following race is not resolved:
// 1) deploy creates image
// 2) query launches chaincode
// 3) deploy returns "premature execution" error
// 4) error ignored and deploy committed
// 5) query successfully retrives committed tx and calls sendInitOrReady
// See issue #710
if t.Type != pb.Transaction_CHAINCODE_DEPLOY {
ledger, ledgerErr := ledger.GetLedger()
if chaincodeSupport.userRunsCC {
chaincodeLogger.Error("You are attempting to perform an action other than Deploy on Chaincode that is not ready and you are in developer mode. Did you forget to Deploy your chaincode?")
}
if ledgerErr != nil {
return cID, cMsg, fmt.Errorf("Failed to get handle to ledger (%s)", ledgerErr)
}
//hopefully we are restarting from existing image and the deployed transaction exists
depTx, ledgerErr = ledger.GetTransactionByID(chaincode)
if ledgerErr != nil {
return cID, cMsg, fmt.Errorf("Could not get deployment transaction for %s - %s", chaincode, ledgerErr)
}
if depTx == nil {
return cID, cMsg, fmt.Errorf("deployment transaction does not exist for %s", chaincode)
}
if nil != chaincodeSupport.secHelper {
var err error
depTx, err = chaincodeSupport.secHelper.TransactionPreExecution(depTx)
// Note that t is now decrypted and is a deep clone of the original input t
if nil != err {
return cID, cMsg, fmt.Errorf("failed tx preexecution%s - %s", chaincode, err)
}
}
//Get lang from original deployment
err := proto.Unmarshal(depTx.Payload, cds)
if err != nil {
return cID, cMsg, fmt.Errorf("failed to unmarshal deployment transactions for %s - %s", chaincode, err)
}
cLang = cds.ChaincodeSpec.Type
}
//from here on : if we launch the container and get an error, we need to stop the container
//launch container if it is a System container or not in dev mode
if (!chaincodeSupport.userRunsCC || cds.ExecEnv == pb.ChaincodeDeploymentSpec_SYSTEM) && (chrte == nil || chrte.handler == nil) {
var targz io.Reader = bytes.NewBuffer(cds.CodePackage)
_, err = chaincodeSupport.launchAndWaitForRegister(context, cds, cID, t.Txid, cLang, targz)
if err != nil {
chaincodeLogger.Errorf("launchAndWaitForRegister failed %s", err)
return cID, cMsg, err
}
}
if err == nil {
//send init (if (args)) and wait for ready state
err = chaincodeSupport.sendInitOrReady(context, t.Txid, chaincode, initargs, chaincodeSupport.ccStartupTimeout, t, depTx)
if err != nil {
chaincodeLogger.Errorf("sending init failed(%s)", err)
err = fmt.Errorf("Failed to init chaincode(%s)", err)
errIgnore := chaincodeSupport.Stop(context, cds)
if errIgnore != nil {
chaincodeLogger.Errorf("stop failed %s(%s)", errIgnore, err)
}
}
chaincodeLogger.Debug("sending init completed")
}
chaincodeLogger.Debug("LaunchChaincode complete")
return cID, cMsg, err
}
// getSecHelper returns the security help set from NewChaincodeSupport
func (chaincodeSupport *ChaincodeSupport) getSecHelper() crypto.Peer {
return chaincodeSupport.secHelper
}
//getVMType - just returns a string for now. Another possibility is to use a factory method to
//return a VM executor
func (chaincodeSupport *ChaincodeSupport) getVMType(cds *pb.ChaincodeDeploymentSpec) (string, error) {
if cds.ExecEnv == pb.ChaincodeDeploymentSpec_SYSTEM {
return container.SYSTEM, nil
}
return container.DOCKER, nil
}
// Deploy deploys the chaincode if not in development mode where user is running the chaincode.
func (chaincodeSupport *ChaincodeSupport) Deploy(context context.Context, t *pb.Transaction) (*pb.ChaincodeDeploymentSpec, error) {
//build the chaincode
cds := &pb.ChaincodeDeploymentSpec{}
err := proto.Unmarshal(t.Payload, cds)
if err != nil {
return nil, err
}
cID := cds.ChaincodeSpec.ChaincodeID
cLang := cds.ChaincodeSpec.Type
chaincode := cID.Name
if err != nil {
return cds, err
}
if chaincodeSupport.userRunsCC {
chaincodeLogger.Debug("user runs chaincode, not deploying chaincode")
return nil, nil
}
chaincodeSupport.runningChaincodes.Lock()
//if its in the map, there must be a connected stream...and we are trying to build the code ?!
if _, ok := chaincodeSupport.chaincodeHasBeenLaunched(chaincode); ok {
chaincodeLogger.Debugf("deploy ?!! there's a chaincode with that name running: %s", chaincode)
chaincodeSupport.runningChaincodes.Unlock()
return cds, fmt.Errorf("deploy attempted but a chaincode with same name running %s", chaincode)
}
chaincodeSupport.runningChaincodes.Unlock()
args, envs, err := chaincodeSupport.getArgsAndEnv(cID, cLang)
if err != nil {
return cds, fmt.Errorf("error getting args for chaincode %s", err)
}
var targz io.Reader = bytes.NewBuffer(cds.CodePackage)
cir := &container.CreateImageReq{CCID: ccintf.CCID{ChaincodeSpec: cds.ChaincodeSpec, NetworkID: chaincodeSupport.peerNetworkID, PeerID: chaincodeSupport.peerID}, Args: args, Reader: targz, Env: envs}
vmtype, _ := chaincodeSupport.getVMType(cds)
chaincodeLogger.Debugf("deploying chaincode %s(networkid:%s,peerid:%s)", chaincode, chaincodeSupport.peerNetworkID, chaincodeSupport.peerID)
//create image and create container
_, err = container.VMCProcess(context, vmtype, cir)
if err != nil {
err = fmt.Errorf("Error starting container: %s", err)
}
return cds, err
}
// HandleChaincodeStream implements ccintf.HandleChaincodeStream for all vms to call with appropriate stream
func (chaincodeSupport *ChaincodeSupport) HandleChaincodeStream(ctxt context.Context, stream ccintf.ChaincodeStream) error {
return HandleChaincodeStream(chaincodeSupport, ctxt, stream)
}
// Register the bidi stream entry point called by chaincode to register with the Peer.
func (chaincodeSupport *ChaincodeSupport) Register(stream pb.ChaincodeSupport_RegisterServer) error {
return chaincodeSupport.HandleChaincodeStream(stream.Context(), stream)
}
// createTransactionMessage creates a transaction message.
func createTransactionMessage(txid string, cMsg *pb.ChaincodeInput) (*pb.ChaincodeMessage, error) {
payload, err := proto.Marshal(cMsg)
if err != nil {
fmt.Printf(err.Error())
return nil, err
}
return &pb.ChaincodeMessage{Type: pb.ChaincodeMessage_TRANSACTION, Payload: payload, Txid: txid}, nil
}
// createQueryMessage creates a query message.
func createQueryMessage(txid string, cMsg *pb.ChaincodeInput) (*pb.ChaincodeMessage, error) {
payload, err := proto.Marshal(cMsg)
if err != nil {
return nil, err
}
return &pb.ChaincodeMessage{Type: pb.ChaincodeMessage_QUERY, Payload: payload, Txid: txid}, nil
}
// Execute executes a transaction and waits for it to complete until a timeout value.
func (chaincodeSupport *ChaincodeSupport) Execute(ctxt context.Context, chaincode string, msg *pb.ChaincodeMessage, timeout time.Duration, tx *pb.Transaction) (*pb.ChaincodeMessage, error) {
chaincodeSupport.runningChaincodes.Lock()
//we expect the chaincode to be running... sanity check
chrte, ok := chaincodeSupport.chaincodeHasBeenLaunched(chaincode)
if !ok {
chaincodeSupport.runningChaincodes.Unlock()
chaincodeLogger.Debugf("cannot execute-chaincode is not running: %s", chaincode)
return nil, fmt.Errorf("Cannot execute transaction or query for %s", chaincode)
}
chaincodeSupport.runningChaincodes.Unlock()
var notfy chan *pb.ChaincodeMessage
var err error
if notfy, err = chrte.handler.sendExecuteMessage(msg, tx); err != nil {
return nil, fmt.Errorf("Error sending %s: %s", msg.Type.String(), err)
}
var ccresp *pb.ChaincodeMessage
select {
case ccresp = <-notfy:
//response is sent to user or calling chaincode. ChaincodeMessage_ERROR and ChaincodeMessage_QUERY_ERROR
//are typically treated as error
case <-time.After(timeout):
err = fmt.Errorf("Timeout expired while executing transaction")
}
//our responsibility to delete transaction context if sendExecuteMessage succeeded
chrte.handler.deleteTxContext(msg.Txid)
return ccresp, err
}