// applyPatch is used by the agent to copy patch data onto disk
// and then call the necessary git commands to apply the patch file
func (gapc *GitApplyPatchCommand) applyPatch(conf *model.TaskConfig,
patch *patch.Patch, pluginLogger plugin.Logger) error {
// patch sets and contain multiple patches, some of them for modules
for _, patchPart := range patch.Patches {
var dir string
if patchPart.ModuleName == "" {
// if patch is not part of a module, just apply patch against src root
dir = gapc.Directory
pluginLogger.LogExecution(slogger.INFO, "Applying patch with git...")
} else {
// if patch is part of a module, apply patch in module root
module, err := conf.Project.GetModuleByName(patchPart.ModuleName)
if err != nil {
return fmt.Errorf("Error getting module: %v", err)
}
if module == nil {
return fmt.Errorf("Module not found: %v", patchPart.ModuleName)
}
// skip the module if this build variant does not use it
if !util.SliceContains(conf.BuildVariant.Modules, module.Name) {
pluginLogger.LogExecution(slogger.INFO, "Skipping patch for"+
" module %v, since the current build variant does not"+
" use it", module.Name)
continue
}
dir = filepath.Join(gapc.Directory, module.Prefix, module.Name)
pluginLogger.LogExecution(slogger.INFO, "Applying module patch with git...")
}
// create a temporary folder and store patch files on disk,
// for later use in shell script
tempFile, err := ioutil.TempFile("", "mcipatch_")
if err != nil {
return err
}
defer tempFile.Close()
_, err = io.WriteString(tempFile, patchPart.PatchSet.Patch)
if err != nil {
return err
}
tempAbsPath := tempFile.Name()
// this applies the patch using the patch files in the temp directory
patchCommandStrings := []string{
fmt.Sprintf("set -o verbose"),
fmt.Sprintf("set -o errexit"),
fmt.Sprintf("ls"),
fmt.Sprintf("cd '%v'", dir),
fmt.Sprintf("git checkout '%v'", patchPart.Githash),
fmt.Sprintf("git apply --check --whitespace=fix '%v'", tempAbsPath),
fmt.Sprintf("git apply --stat '%v'", tempAbsPath),
fmt.Sprintf("git apply --whitespace=fix < '%v'", tempAbsPath),
}
cmdsJoined := strings.Join(patchCommandStrings, "\n")
patchCmd := &command.LocalCommand{
CmdString: cmdsJoined,
WorkingDirectory: conf.WorkDir,
Stdout: pluginLogger.GetTaskLogWriter(slogger.INFO),
Stderr: pluginLogger.GetTaskLogWriter(slogger.ERROR),
ScriptMode: true,
}
err = patchCmd.Run()
if err != nil {
return err
}
pluginLogger.Flush()
}
return nil
}
// Execute gets the source code required by the project
func (ggpc *GitGetProjectCommand) Execute(pluginLogger plugin.Logger,
pluginCom plugin.PluginCommunicator,
conf *model.TaskConfig,
stop chan bool) error {
// expand the github parameters before running the task
if err := plugin.ExpandValues(&ggpc.Revisions, conf.Expansions); err != nil {
return err
}
location, err := conf.ProjectRef.Location()
if err != nil {
return err
}
gitCommands := []string{
fmt.Sprintf("set -o errexit"),
fmt.Sprintf("set -o verbose"),
fmt.Sprintf("rm -rf %v", ggpc.Directory),
fmt.Sprintf("git clone %v '%v'", location, ggpc.Directory),
fmt.Sprintf("cd %v; git checkout %v", ggpc.Directory, conf.Task.Revision),
}
cmdsJoined := strings.Join(gitCommands, "\n")
fetchSourceCmd := &command.LocalCommand{
CmdString: cmdsJoined,
WorkingDirectory: conf.WorkDir,
Stdout: pluginLogger.GetTaskLogWriter(slogger.INFO),
Stderr: pluginLogger.GetTaskLogWriter(slogger.ERROR),
ScriptMode: true,
}
errChan := make(chan error)
go func() {
pluginLogger.LogExecution(slogger.INFO, "Fetching source from git...")
errChan <- fetchSourceCmd.Run()
pluginLogger.Flush()
}()
// wait until the command finishes or the stop channel is tripped
select {
case err := <-errChan:
if err != nil {
return err
}
case <-stop:
pluginLogger.LogExecution(slogger.INFO, "Got kill signal")
if fetchSourceCmd.Cmd != nil {
pluginLogger.LogExecution(slogger.INFO, "Stopping process: %v", fetchSourceCmd.Cmd.Process.Pid)
if err := fetchSourceCmd.Stop(); err != nil {
pluginLogger.LogExecution(slogger.ERROR, "Error occurred stopping process: %v", err)
}
}
return fmt.Errorf("Fetch command interrupted.")
}
// Fetch source for the modules
for _, moduleName := range conf.BuildVariant.Modules {
pluginLogger.LogExecution(slogger.INFO, "Fetching module: %v", moduleName)
module, err := conf.Project.GetModuleByName(moduleName)
if err != nil {
pluginLogger.LogExecution(slogger.ERROR, "Couldn't get module %v: %v",
moduleName, err)
continue
}
if module == nil {
pluginLogger.LogExecution(slogger.ERROR, "No module found for %v",
moduleName)
continue
}
moduleBase := filepath.Join(module.Prefix, module.Name)
moduleDir := filepath.Join(conf.WorkDir, moduleBase, "/_")
err = os.MkdirAll(moduleDir, 0755)
if err != nil {
return err
}
// clear the destination
err = os.RemoveAll(moduleDir)
if err != nil {
return err
}
revision := ggpc.Revisions[moduleName]
// if there is no revision, then use the branch name
if revision == "" {
revision = module.Branch
}
moduleCmds := []string{
fmt.Sprintf("set -o errexit"),
fmt.Sprintf("set -o verbose"),
fmt.Sprintf("git clone %v '%v'", module.Repo, filepath.ToSlash(moduleBase)),
fmt.Sprintf("cd %v; git checkout '%v'", filepath.ToSlash(moduleBase), revision),
}
moduleFetchCmd := &command.LocalCommand{
CmdString: strings.Join(moduleCmds, "\n"),
WorkingDirectory: filepath.ToSlash(filepath.Join(conf.WorkDir, ggpc.Directory)),
Stdout: pluginLogger.GetTaskLogWriter(slogger.INFO),
Stderr: pluginLogger.GetTaskLogWriter(slogger.ERROR),
ScriptMode: true,
}
go func() {
errChan <- moduleFetchCmd.Run()
pluginLogger.Flush()
}()
// wait until the command finishes or the stop channel is tripped
select {
case err := <-errChan:
if err != nil {
return err
}
case <-stop:
pluginLogger.LogExecution(slogger.INFO, "Got kill signal")
if moduleFetchCmd.Cmd != nil {
pluginLogger.LogExecution(slogger.INFO, "Stopping process: %v", moduleFetchCmd.Cmd.Process.Pid)
if err := moduleFetchCmd.Stop(); err != nil {
pluginLogger.LogExecution(slogger.ERROR, "Error occurred stopping process: %v", err)
}
}
return fmt.Errorf("Fetch module command interrupted.")
}
}
return nil
}
// Execute gets the source code required by the project
func (self *GitGetProjectCommand) Execute(pluginLogger plugin.Logger,
pluginCom plugin.PluginCommunicator,
conf *model.TaskConfig,
stop chan bool) error {
location, err := conf.ProjectRef.Location()
if err != nil {
return err
}
gitCommands := []string{
fmt.Sprintf("set -o errexit"),
fmt.Sprintf("set -o verbose"),
fmt.Sprintf("rm -rf %v", self.Directory),
fmt.Sprintf("git clone %v '%v'", location, self.Directory),
fmt.Sprintf("cd %v; git checkout %v", self.Directory, conf.Task.Revision),
}
cmdsJoined := strings.Join(gitCommands, "\n")
fetchSourceCmd := &command.LocalCommand{
CmdString: cmdsJoined,
WorkingDirectory: conf.WorkDir,
Stdout: pluginLogger.GetTaskLogWriter(slogger.INFO),
Stderr: pluginLogger.GetTaskLogWriter(slogger.ERROR),
ScriptMode: true,
}
pluginLogger.LogExecution(slogger.INFO, "Fetching source from git...")
if err := fetchSourceCmd.Run(); err != nil {
return err
}
pluginLogger.Flush()
// Fetch source for the modules
for _, moduleName := range conf.BuildVariant.Modules {
pluginLogger.LogExecution(slogger.INFO, "Fetching module: %v", moduleName)
module, err := conf.Project.GetModuleByName(moduleName)
if err != nil {
pluginLogger.LogExecution(slogger.ERROR, "Couldn't get module %v: %v",
moduleName, err)
continue
}
if module == nil {
pluginLogger.LogExecution(slogger.ERROR, "No module found for %v",
moduleName)
continue
}
moduleBase := filepath.Join(module.Prefix, module.Name)
moduleDir := filepath.Join(conf.WorkDir, moduleBase, "/_")
err = os.MkdirAll(moduleDir, 0755)
if err != nil {
return err
}
// clear the destination
err = os.RemoveAll(moduleDir)
if err != nil {
return err
}
moduleCmds := []string{
fmt.Sprintf("set -o errexit"),
fmt.Sprintf("set -o verbose"),
fmt.Sprintf("git clone %v '%v'", module.Repo, filepath.ToSlash(moduleBase)),
fmt.Sprintf("cd %v; git checkout '%v'", filepath.ToSlash(moduleBase), module.Branch),
}
moduleFetchCmd := &command.LocalCommand{
CmdString: strings.Join(moduleCmds, "\n"),
WorkingDirectory: filepath.ToSlash(filepath.Join(conf.WorkDir, self.Directory)),
Stdout: pluginLogger.GetTaskLogWriter(slogger.INFO),
Stderr: pluginLogger.GetTaskLogWriter(slogger.ERROR),
ScriptMode: true,
}
err = moduleFetchCmd.Run()
if err != nil {
return err
}
pluginLogger.Flush()
}
return nil
}
// Execute starts the shell with its given parameters.
func (self *ShellExecCommand) Execute(pluginLogger plugin.Logger,
pluginCom plugin.PluginCommunicator,
conf *model.TaskConfig,
stop chan bool) error {
pluginLogger.LogExecution(slogger.DEBUG, "Preparing script...")
logWriterInfo := pluginLogger.GetTaskLogWriter(slogger.INFO)
logWriterErr := pluginLogger.GetTaskLogWriter(slogger.ERROR)
outBufferWriter := util.NewLineBufferingWriter(logWriterInfo)
errorBufferWriter := util.NewLineBufferingWriter(logWriterErr)
defer outBufferWriter.Flush()
defer errorBufferWriter.Flush()
localCmd := &command.LocalCommand{
CmdString: self.Script,
Stdout: outBufferWriter,
Stderr: errorBufferWriter,
ScriptMode: true,
}
if self.WorkingDir != "" {
localCmd.WorkingDirectory = filepath.Join(conf.WorkDir, self.WorkingDir)
} else {
localCmd.WorkingDirectory = conf.WorkDir
}
err := localCmd.PrepToRun(conf.Expansions)
if err != nil {
return fmt.Errorf("Failed to apply expansions: %v", err)
}
if self.Silent {
pluginLogger.LogExecution(slogger.INFO, "Executing script (source hidden)...")
} else {
pluginLogger.LogExecution(slogger.INFO, "Executing script: %v", localCmd.CmdString)
}
doneStatus := make(chan error)
go func() {
var err error
env := os.Environ()
env = append(env, fmt.Sprintf("EVR_TASK_ID=%v", conf.Task.Id))
env = append(env, fmt.Sprintf("EVR_AGENT_PID=%v", os.Getpid()))
localCmd.Environment = env
err = localCmd.Start()
if err == nil {
pluginLogger.LogSystem(slogger.DEBUG, "spawned shell process with pid %v", localCmd.Cmd.Process.Pid)
// Call the platform's process-tracking function. On some OSes this will be a noop,
// on others this may need to do some additional work to track the process so that
// it can be cleaned up later.
if trackedTask != "" && trackedTask == conf.Task.Id {
trackProcess(conf.Task.Id, localCmd.Cmd.Process.Pid, pluginLogger)
}
if !self.Background {
err = localCmd.Cmd.Wait()
}
} else {
pluginLogger.LogSystem(slogger.DEBUG, "error spawning shell process: %v", err)
}
doneStatus <- err
}()
defer pluginLogger.Flush()
select {
case err = <-doneStatus:
if err != nil {
if self.ContinueOnError {
pluginLogger.LogExecution(slogger.INFO, "(ignoring) Script finished with error: %v", err)
return nil
} else {
pluginLogger.LogExecution(slogger.INFO, "Script finished with error: %v", err)
return err
}
} else {
pluginLogger.LogExecution(slogger.INFO, "Script execution complete.")
}
case <-stop:
pluginLogger.LogExecution(slogger.INFO, "Got kill signal")
// need to check command has started
if localCmd.Cmd != nil {
pluginLogger.LogExecution(slogger.INFO, "Stopping process: %v", localCmd.Cmd.Process.Pid)
// try and stop the process
if err := localCmd.Stop(); err != nil {
pluginLogger.LogExecution(slogger.ERROR, "Error occurred stopping process: %v", err)
}
}
return fmt.Errorf("Shell command interrupted.")
}
return nil
}