/
docker_compose_op.go
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/
docker_compose_op.go
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// Copyright 2020 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package framework
import (
"context"
"database/sql"
"fmt"
"os"
"os/exec"
"github.com/integralist/go-findroot/find"
"github.com/pingcap/errors"
"github.com/pingcap/log"
cerrors "github.com/pingcap/tiflow/pkg/errors"
"github.com/pingcap/tiflow/pkg/retry"
"go.uber.org/zap"
)
// DockerComposeOperator represent a docker compose
type DockerComposeOperator struct {
FileName string
Controller string
HealthChecker func() error
ExecEnv []string
}
// Setup brings up a docker-compose service
func (d *DockerComposeOperator) Setup() {
cmd := exec.Command("docker-compose", "-f", d.FileName, "up", "-d")
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env, d.ExecEnv...)
runCmdHandleError(cmd)
err := waitTiDBStarted(UpstreamDSN)
if err != nil {
log.Fatal("ping upstream database but not receive a pong", zap.Error(err))
}
err = waitTiDBStarted(DownstreamDSN)
if err != nil {
log.Fatal("ping downstream database but not receive a pong", zap.Error(err))
}
d.WaitClusterStarted()
}
// WaitClusterStarted waits the cluster is started and ready
func (d *DockerComposeOperator) WaitClusterStarted() {
if d.HealthChecker != nil {
check := func() error {
err := d.HealthChecker()
if err != nil {
log.Error("check failed", zap.Error(err))
}
return err
}
err := retry.Do(context.Background(), check,
retry.WithBackoffBaseDelay(1000),
retry.WithBackoffMaxDelay(60*1000),
retry.WithMaxTries(120),
retry.WithIsRetryableErr(cerrors.IsRetryableError))
if err != nil {
log.Fatal("Docker service health check failed after max retries",
zap.Error(err))
}
}
}
// RestartComponents restarts a docker-compose service
func (d *DockerComposeOperator) RestartComponents(names ...string) {
for _, name := range names {
cmd := exec.Command("docker-compose", "-f", d.FileName, "rm", "-sf", name)
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env, d.ExecEnv...)
runCmdHandleError(cmd)
}
cmd := exec.Command("docker-compose", "-f", d.FileName, "up", "-d")
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env, d.ExecEnv...)
runCmdHandleError(cmd)
}
func waitTiDBStarted(dsn string) error {
return retry.Do(context.Background(), func() error {
upstream, err := sql.Open("mysql", dsn)
if err != nil {
return errors.Trace(err)
}
defer upstream.Close()
err = upstream.Ping()
if err != nil {
return errors.Trace(err)
}
return nil
}, retry.WithBackoffBaseDelay(1000), retry.WithBackoffMaxDelay(60*1000), retry.WithMaxTries(60), retry.WithIsRetryableErr(cerrors.IsRetryableError))
}
func runCmdHandleError(cmd *exec.Cmd) []byte {
log.Info("Start executing command", zap.String("cmd", cmd.String()))
bytes, err := cmd.Output()
if err, ok := err.(*exec.ExitError); ok {
log.Info("Running command failed", zap.ByteString("stderr", err.Stderr))
}
if err != nil {
log.Fatal("Running command failed",
zap.Error(err),
zap.String("command", cmd.String()),
zap.ByteString("output", bytes))
}
log.Info("Finished executing command", zap.String("cmd", cmd.String()), zap.ByteString("output", bytes))
return bytes
}
// CdcHealthCheck check cdc cluster health.
func CdcHealthCheck(cdcContainer, pdEndpoint string) error {
_, err := execInController(cdcContainer,
fmt.Sprintf("/cdc cli --pd=\"%s\" changefeed list", pdEndpoint))
return err
}
// execInController provides a way to execute commands inside a container in the service
func execInController(controller, shellCmd string) ([]byte, error) {
log.Info("Start executing in the Controller container",
zap.String("shellCmd", shellCmd), zap.String("container", controller))
cmd := exec.Command("docker", "exec", controller, "sh", "-c", shellCmd)
defer log.Info("Finished executing in the Controller container",
zap.String("shellCmd", shellCmd), zap.String("container", controller))
return cmd.Output()
}
// DumpStdout dumps all container logs
func (d *DockerComposeOperator) DumpStdout() error {
log.Info("Dumping container logs")
cmd := exec.Command("docker-compose", "-f", d.FileName, "logs", "-t")
st, err := find.Repo()
if err != nil {
log.Fatal("Could not find git repo root", zap.Error(err))
}
f, err := os.Create(st.Path + "/deployments/ticdc/docker-compose/logs/stdout.log")
if err != nil {
return errors.AddStack(err)
}
defer f.Close()
cmd.Stdout = f
err = cmd.Run()
if err != nil {
return errors.AddStack(err)
}
return nil
}
// TearDown terminates a docker-compose service and remove all volumes
func (d *DockerComposeOperator) TearDown() {
log.Info("Start tearing down docker-compose services")
cmd := exec.Command("docker-compose", "-f", d.FileName, "down", "-v")
runCmdHandleError(cmd)
log.Info("Finished tearing down docker-compose services")
}
// ExecInController provides a way to execute commands inside a container in the service
func (d *DockerComposeOperator) ExecInController(shellCmd string) ([]byte, error) {
return execInController(d.Controller, shellCmd)
}