118 lines
3.7 KiB
Go
118 lines
3.7 KiB
Go
// Copyright 2019 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package build
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import (
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"fmt"
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"math/rand"
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"os"
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"path/filepath"
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"time"
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"android/soong/ui/metrics"
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)
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const (
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rbeLeastNProcs = 2500
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rbeLeastNFiles = 16000
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// prebuilt RBE binaries
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bootstrapCmd = "bootstrap"
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// RBE metrics proto buffer file
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rbeMetricsPBFilename = "rbe_metrics.pb"
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)
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func rbeCommand(ctx Context, config Config, rbeCmd string) string {
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var cmdPath string
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if rbeDir, ok := config.Environment().Get("RBE_DIR"); ok {
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cmdPath = filepath.Join(rbeDir, rbeCmd)
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} else if home, ok := config.Environment().Get("HOME"); ok {
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cmdPath = filepath.Join(home, "rbe", rbeCmd)
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} else {
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ctx.Fatalf("rbe command path not found")
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}
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if _, err := os.Stat(cmdPath); err != nil && os.IsNotExist(err) {
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ctx.Fatalf("rbe command %q not found", rbeCmd)
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}
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return cmdPath
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}
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func getRBEVars(ctx Context, tmpDir string) map[string]string {
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rand.Seed(time.Now().UnixNano())
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return map[string]string{"RBE_server_address": fmt.Sprintf("unix://%v/reproxy_%v.sock", tmpDir, rand.Intn(1000))}
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}
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func startRBE(ctx Context, config Config) {
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ctx.BeginTrace(metrics.RunSetupTool, "rbe_bootstrap")
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defer ctx.EndTrace()
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if u := ulimitOrFatal(ctx, config, "-u"); u < rbeLeastNProcs {
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ctx.Fatalf("max user processes is insufficient: %d; want >= %d.\n", u, rbeLeastNProcs)
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}
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if n := ulimitOrFatal(ctx, config, "-n"); n < rbeLeastNFiles {
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ctx.Fatalf("max open files is insufficient: %d; want >= %d.\n", n, rbeLeastNFiles)
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}
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cmd := Command(ctx, config, "startRBE bootstrap", rbeCommand(ctx, config, bootstrapCmd))
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if output, err := cmd.CombinedOutput(); err != nil {
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ctx.Fatalf("rbe bootstrap failed with: %v\n%s\n", err, output)
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}
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}
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func stopRBE(ctx Context, config Config) {
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cmd := Command(ctx, config, "stopRBE bootstrap", rbeCommand(ctx, config, bootstrapCmd), "-shutdown")
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if output, err := cmd.CombinedOutput(); err != nil {
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ctx.Fatalf("rbe bootstrap with shutdown failed with: %v\n%s\n", err, output)
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}
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}
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// DumpRBEMetrics creates a metrics protobuf file containing RBE related metrics.
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// The protobuf file is created if RBE is enabled and the proxy service has
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// started. The proxy service is shutdown in order to dump the RBE metrics to the
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// protobuf file.
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func DumpRBEMetrics(ctx Context, config Config, filename string) {
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ctx.BeginTrace(metrics.RunShutdownTool, "dump_rbe_metrics")
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defer ctx.EndTrace()
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// Remove the previous metrics file in case there is a failure or RBE has been
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// disable for this run.
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os.Remove(filename)
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// If RBE is not enabled then there are no metrics to generate.
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// If RBE does not require to start, the RBE proxy maybe started
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// manually for debugging purpose and can generate the metrics
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// afterwards.
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if !config.StartRBE() {
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return
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}
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outputDir := config.RBEStatsOutputDir()
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if outputDir == "" {
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ctx.Fatal("RBE output dir variable not defined. Aborting metrics dumping.")
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}
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metricsFile := filepath.Join(outputDir, rbeMetricsPBFilename)
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// Stop the proxy first in order to generate the RBE metrics protobuf file.
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stopRBE(ctx, config)
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if _, err := copyFile(metricsFile, filename); err != nil {
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ctx.Fatalf("failed to copy %q to %q: %v\n", metricsFile, filename, err)
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}
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}
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