| // Copyright 2019 Google Inc. 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 build |
| |
| import ( |
| "fmt" |
| "math/rand" |
| "os" |
| "path/filepath" |
| "time" |
| |
| "android/soong/ui/metrics" |
| ) |
| |
| const ( |
| rbeLeastNProcs = 2500 |
| rbeLeastNFiles = 16000 |
| |
| // prebuilt RBE binaries |
| bootstrapCmd = "bootstrap" |
| |
| // RBE metrics proto buffer file |
| rbeMetricsPBFilename = "rbe_metrics.pb" |
| ) |
| |
| func rbeCommand(ctx Context, config Config, rbeCmd string) string { |
| var cmdPath string |
| if rbeDir, ok := config.Environment().Get("RBE_DIR"); ok { |
| cmdPath = filepath.Join(rbeDir, rbeCmd) |
| } else if home, ok := config.Environment().Get("HOME"); ok { |
| cmdPath = filepath.Join(home, "rbe", rbeCmd) |
| } else { |
| ctx.Fatalf("rbe command path not found") |
| } |
| |
| if _, err := os.Stat(cmdPath); err != nil && os.IsNotExist(err) { |
| ctx.Fatalf("rbe command %q not found", rbeCmd) |
| } |
| |
| return cmdPath |
| } |
| |
| func getRBEVars(ctx Context, tmpDir string) map[string]string { |
| rand.Seed(time.Now().UnixNano()) |
| return map[string]string{"RBE_server_address": fmt.Sprintf("unix://%v/reproxy_%v.sock", tmpDir, rand.Intn(1000))} |
| } |
| |
| func startRBE(ctx Context, config Config) { |
| ctx.BeginTrace(metrics.RunSetupTool, "rbe_bootstrap") |
| defer ctx.EndTrace() |
| |
| if u := ulimitOrFatal(ctx, config, "-u"); u < rbeLeastNProcs { |
| ctx.Fatalf("max user processes is insufficient: %d; want >= %d.\n", u, rbeLeastNProcs) |
| } |
| if n := ulimitOrFatal(ctx, config, "-n"); n < rbeLeastNFiles { |
| ctx.Fatalf("max open files is insufficient: %d; want >= %d.\n", n, rbeLeastNFiles) |
| } |
| |
| cmd := Command(ctx, config, "startRBE bootstrap", rbeCommand(ctx, config, bootstrapCmd)) |
| |
| if output, err := cmd.CombinedOutput(); err != nil { |
| ctx.Fatalf("rbe bootstrap failed with: %v\n%s\n", err, output) |
| } |
| } |
| |
| func stopRBE(ctx Context, config Config) { |
| cmd := Command(ctx, config, "stopRBE bootstrap", rbeCommand(ctx, config, bootstrapCmd), "-shutdown") |
| if output, err := cmd.CombinedOutput(); err != nil { |
| ctx.Fatalf("rbe bootstrap with shutdown failed with: %v\n%s\n", err, output) |
| } |
| } |
| |
| // DumpRBEMetrics creates a metrics protobuf file containing RBE related metrics. |
| // The protobuf file is created if RBE is enabled and the proxy service has |
| // started. The proxy service is shutdown in order to dump the RBE metrics to the |
| // protobuf file. |
| func DumpRBEMetrics(ctx Context, config Config, filename string) { |
| ctx.BeginTrace(metrics.RunShutdownTool, "dump_rbe_metrics") |
| defer ctx.EndTrace() |
| |
| // Remove the previous metrics file in case there is a failure or RBE has been |
| // disable for this run. |
| os.Remove(filename) |
| |
| // If RBE is not enabled then there are no metrics to generate. |
| // If RBE does not require to start, the RBE proxy maybe started |
| // manually for debugging purpose and can generate the metrics |
| // afterwards. |
| if !config.StartRBE() { |
| return |
| } |
| |
| outputDir := config.RBEStatsOutputDir() |
| if outputDir == "" { |
| ctx.Fatal("RBE output dir variable not defined. Aborting metrics dumping.") |
| } |
| metricsFile := filepath.Join(outputDir, rbeMetricsPBFilename) |
| |
| // Stop the proxy first in order to generate the RBE metrics protobuf file. |
| stopRBE(ctx, config) |
| |
| if _, err := copyFile(metricsFile, filename); err != nil { |
| ctx.Fatalf("failed to copy %q to %q: %v\n", metricsFile, filename, err) |
| } |
| } |