Golang BuildState.LogBuildError方法代碼示例

func Build(tid int, state *core.BuildState, label core.BuildLabel) {
	start := time.Now()
	target := state.Graph.TargetOrDie(label)
	target.SetState(core.Building)
	if err := buildTarget(tid, state, target); err != nil {
		if err == stopTarget {
			target.SetState(core.Stopped)
			state.LogBuildResult(tid, target.Label, core.TargetBuildStopped, "Build stopped")
			return
		}
		state.LogBuildError(tid, label, core.TargetBuildFailed, err, "Build failed: %s", err)
		if err := RemoveOutputs(target); err != nil {
			log.Errorf("Failed to remove outputs for %s: %s", target.Label, err)
		}
		target.SetState(core.Failed)
		return
	}
	metrics.Record(target, time.Since(start))

	// Add any of the reverse deps that are now fully built to the queue.
	for _, reverseDep := range state.Graph.ReverseDependencies(target) {
		if reverseDep.State() == core.Active && state.Graph.AllDepsBuilt(reverseDep) && reverseDep.SyncUpdateState(core.Active, core.Pending) {
			state.AddPendingBuild(reverseDep.Label, false)
		}
	}
	if target.IsTest && state.NeedTests {
		state.AddPendingTest(target.Label)
	}
	parse.UndeferAnyParses(state, target)
}

// prepareAndRunTest sets up a test directory and runs the test.
func prepareAndRunTest(tid int, state *core.BuildState, target *core.BuildTarget) (out []byte, err error) {
	if err = prepareTestDir(state.Graph, target); err != nil {
		state.LogBuildError(tid, target.Label, core.TargetTestFailed, err, "Failed to prepare test directory for %s: %s", target.Label, err)
		return []byte{}, err
	}
	return runPossiblyContainerisedTest(state, target)
}

// RunPreBuildFunction runs a pre-build callback function registered on a build target via pre_build = <...>.
//
// This is called before the target is built. It doesn't receive any output like the post-build one does but can
// be useful for other things; for example if you want to investigate a target's transitive labels to adjust
// its build command, you have to do that here (because in general the transitive dependencies aren't known
// when the rule is evaluated).
func RunPreBuildFunction(tid int, state *core.BuildState, target *core.BuildTarget) error {
	state.LogBuildResult(tid, target.Label, core.PackageParsing,
		fmt.Sprintf("Running pre-build function for %s", target.Label))
	pkg := state.Graph.Package(target.Label.PackageName)
	pkg.BuildCallbackMutex.Lock()
	defer pkg.BuildCallbackMutex.Unlock()
	if err := runPreBuildFunction(pkg, target); err != nil {
		state.LogBuildError(tid, target.Label, core.ParseFailed, err, "Failed pre-build function for %s", target.Label)
		return err
	}
	rescanDeps(state, pkg)
	state.LogBuildResult(tid, target.Label, core.TargetBuilding,
		fmt.Sprintf("Finished pre-build function for %s", target.Label))
	return nil
}

// Parses the package corresponding to a single build label. The label can be :all to add all targets in a package.
// It is not an error if the package has already been parsed.
//
// By default, after the package is parsed, any targets that are now needed for the build and ready
// to be built are queued, and any new packages are queued for parsing. When a specific label is requested
// this is straightforward, but when parsing for pseudo-targets like :all and ..., various flags affect it:
// If 'noDeps' is true, then no new packages will be added and no new targets queued.
// 'include' and 'exclude' refer to the labels of targets to be added. If 'include' is non-empty then only
// targets with at least one matching label are added. Any targets with a label in 'exclude' are not added.
func Parse(tid int, state *core.BuildState, label, dependor core.BuildLabel, noDeps bool, include, exclude []string) {
	defer func() {
		if r := recover(); r != nil {
			state.LogBuildError(tid, label, core.ParseFailed, fmt.Errorf("%s", r), "Failed to parse package")
		}
	}()
	// First see if this package already exists; once it's in the graph it will have been parsed.
	pkg := state.Graph.Package(label.PackageName)
	if pkg != nil {
		// Does exist, all we need to do is toggle on this target
		activateTarget(state, pkg, label, dependor, noDeps, include, exclude)
		return
	}
	// We use the name here to signal undeferring of a package. If we get that we need to retry the package regardless.
	if dependor.Name != "_UNDEFER_" && !firstToParse(label, dependor) {
		// Check this again to avoid a potential race
		if pkg = state.Graph.Package(label.PackageName); pkg != nil {
			activateTarget(state, pkg, label, dependor, noDeps, include, exclude)
		} else {
			log.Debug("Adding pending parse for %s", label)
		}
		return
	}
	// If we get here then it falls to us to parse this package
	state.LogBuildResult(tid, label, core.PackageParsing, "Parsing...")
	pkg = parsePackage(state, label, dependor)
	if pkg == nil {
		state.LogBuildResult(tid, label, core.PackageParsed, "Deferred")
		return
	}

	// Now add any lurking pending targets for this package.
	pendingTargetMutex.Lock()
	pending := pendingTargets[label.PackageName]                       // Must be present.
	pendingTargets[label.PackageName] = map[string][]core.BuildLabel{} // Empty this to free memory, but leave a sentinel
	pendingTargetMutex.Unlock()                                        // Nothing will look up this package in the map again.
	for targetName, dependors := range pending {
		for _, dependor := range dependors {
			lbl := core.BuildLabel{PackageName: label.PackageName, Name: targetName}
			activateTarget(state, pkg, lbl, dependor, noDeps, include, exclude)
		}
	}
	state.LogBuildResult(tid, label, core.PackageParsed, "Parsed")
}

func test(tid int, state *core.BuildState, label core.BuildLabel, target *core.BuildTarget) {
	startTime := time.Now()
	hash, err := build.RuntimeHash(state, target)
	if err != nil {
		state.LogBuildError(tid, label, core.TargetTestFailed, err, "Failed to calculate target hash")
		return
	}
	// Check the cached output files if the target wasn't rebuilt.
	hash = core.CollapseHash(hash)
	hashStr := base64.RawURLEncoding.EncodeToString(hash)
	resultsFileName := fmt.Sprintf(".test_results_%s_%s", label.Name, hashStr)
	coverageFileName := fmt.Sprintf(".test_coverage_%s_%s", label.Name, hashStr)
	outputFile := path.Join(target.TestDir(), "test.results")
	coverageFile := path.Join(target.TestDir(), "test.coverage")
	cachedOutputFile := path.Join(target.OutDir(), resultsFileName)
	cachedCoverageFile := path.Join(target.OutDir(), coverageFileName)
	needCoverage := state.NeedCoverage && !target.NoTestOutput

	cachedTest := func() {
		log.Debug("Not re-running test %s; got cached results.", label)
		coverage := parseCoverageFile(target, cachedCoverageFile)
		results, err := parseTestResults(target, cachedOutputFile, true)
		target.Results.Duration = time.Since(startTime).Seconds()
		target.Results.Cached = true
		if err != nil {
			state.LogBuildError(tid, label, core.TargetTestFailed, err, "Failed to parse cached test file %s", cachedOutputFile)
		} else if results.Failed > 0 {
			panic("Test results with failures shouldn't be cached.")
		} else {
			logTestSuccess(state, tid, label, results, coverage)
		}
	}

	moveAndCacheOutputFiles := func(results core.TestResults, coverage core.TestCoverage) bool {
		// Never cache test results when given arguments; the results may be incomplete.
		if len(state.TestArgs) > 0 {
			log.Debug("Not caching results for %s, we passed it arguments", label)
			return true
		}
		if err := moveAndCacheOutputFile(state, target, hash, outputFile, cachedOutputFile, resultsFileName, dummyOutput); err != nil {
			state.LogTestResult(tid, label, core.TargetTestFailed, results, coverage, err, "Failed to move test output file")
			return false
		}
		if needCoverage || core.PathExists(coverageFile) {
			if err := moveAndCacheOutputFile(state, target, hash, coverageFile, cachedCoverageFile, coverageFileName, dummyCoverage); err != nil {
				state.LogTestResult(tid, label, core.TargetTestFailed, results, coverage, err, "Failed to move test coverage file")
				return false
			}
		}
		for _, output := range target.TestOutputs {
			tmpFile := path.Join(target.TestDir(), output)
			outFile := path.Join(target.OutDir(), output)
			if err := moveAndCacheOutputFile(state, target, hash, tmpFile, outFile, output, ""); err != nil {
				state.LogTestResult(tid, label, core.TargetTestFailed, results, coverage, err, "Failed to move test output file")
				return false
			}
		}
		return true
	}

	needToRun := func() bool {
		if target.State() == core.Unchanged && core.PathExists(cachedOutputFile) {
			// Output file exists already and appears to be valid. We might still need to rerun though
			// if the coverage files aren't available.
			if needCoverage && !core.PathExists(cachedCoverageFile) {
				return true
			}
			return false
		}
		// Check the cache for these artifacts.
		if state.Cache == nil {
			return true
		}
		cache := *state.Cache
		if !cache.RetrieveExtra(target, hash, resultsFileName) {
			return true
		}
		if needCoverage && !cache.RetrieveExtra(target, hash, coverageFileName) {
			return true
		}
		for _, output := range target.TestOutputs {
			if !cache.RetrieveExtra(target, hash, output) {
				return true
			}
		}
		return false
	}

	// Don't cache when doing multiple runs, presumably the user explicitly wants to check it.
	if state.NumTestRuns <= 1 && !needToRun() {
		cachedTest()
		return
	}
	// Remove any cached test result file.
	if err := RemoveCachedTestFiles(target); err != nil {
		state.LogBuildError(tid, label, core.TargetTestFailed, err, "Failed to remove cached test files")
		return
	}
	numSucceeded := 0
	numFlakes := 0
//.........這裏部分代碼省略.........