tvalentyn commented on code in PR #38853: URL: https://github.com/apache/beam/pull/38853#discussion_r3384742280
########## sdks/python/container/profiler.go: ########## @@ -0,0 +1,314 @@ +// Licensed to the Apache Software Foundation (ASF) under one or more +// contributor license agreements. See the NOTICE file distributed with +// this work for additional information regarding copyright ownership. +// The ASF licenses this file to You 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 main + +import ( + "context" + "fmt" + "os" + "os/exec" + "path/filepath" + "strings" + "sync" + "time" + + "github.com/apache/beam/sdks/v2/go/container/tools" +) + +type profilerConfigKeyType int + +const profilerConfigKey profilerConfigKeyType = iota + +// ProfilerConfig holds all pre-computed profiling parameters. +type ProfilerConfig struct { + Enabled bool + Agent string + ExtraArgs []string + ExtraEnvVars []string + Location string + TempLocation string + StopSentinelPath string + GcsDestPath string + UploadIntervalSec int + StopAfterSec int + StopAfterCrash bool + PostprocessIntervalSec int +} + +// setupProfilerConfig parses PipelineOptionsData and stores a resolved ProfilerConfig in the context. +func setupProfilerConfig(ctx context.Context, logger *tools.Logger, opts *PipelineOptionsData) context.Context { + agent := opts.Options.ProfilerAgent + if agent == "" { + return ctx + } + + tempLocation := opts.Options.ProfileTempLocation + if tempLocation == "" { + tempLocation = filepath.Join(*semiPersistDir, "profiles") + } + + jobId := opts.Options.JobId + if jobId == "" { + jobId = "BEAM_JOB" + } + hostname, _ := os.Hostname() + if hostname == "" { + hostname = "default-worker" + } + sentinelPath := filepath.Join(tempLocation, fmt.Sprintf(".profiler_disengaged_%s_%s", jobId, hostname)) + + var gcsDestPath string + if strings.HasPrefix(opts.Options.ProfileLocation, "gs://") { + baseGcsDest := strings.TrimSuffix(opts.Options.ProfileLocation, "/") + gcsDestPath = fmt.Sprintf("%s/%s/%s", baseGcsDest, jobId, hostname) + } + + config := &ProfilerConfig{ + Enabled: true, + Agent: agent, + ExtraArgs: opts.Options.ProfilerExtraArgs, + ExtraEnvVars: opts.Options.ProfilerExtraEnvVars, + Location: opts.Options.ProfileLocation, + TempLocation: tempLocation, + StopSentinelPath: sentinelPath, + GcsDestPath: gcsDestPath, + UploadIntervalSec: opts.Options.ProfileUploadIntervalSec, + StopAfterSec: opts.Options.ProfilerStopAfterSec, + StopAfterCrash: opts.Options.ProfilerStopAfterCrash, + PostprocessIntervalSec: opts.Options.ProfilePostprocessIntervalSec, + } + + return context.WithValue(ctx, profilerConfigKey, config) +} + +// getProfilerConfig extracts the ProfilerConfig from the context. +func getProfilerConfig(ctx context.Context) *ProfilerConfig { + if cfg, ok := ctx.Value(profilerConfigKey).(*ProfilerConfig); ok { + return cfg + } + return nil +} + +// startProfilerBackgroundTasks initializes profiling locations and runs background tasks (GCS sync, post-processing loops) if profiling is enabled. +func startProfilerBackgroundTasks(ctx context.Context, logger *tools.Logger) { + pcfg := getProfilerConfig(ctx) + if pcfg == nil { + return + } + + logger.Printf(ctx, "Worker will be configured with profiler agent enabled.") + logger.Printf(ctx, "ProfilerAgent: %v", pcfg.Agent) + logger.Printf(ctx, "ProfilerExtraArgs: %v", pcfg.ExtraArgs) + logger.Printf(ctx, "ProfilerExtraEnvVars: %v", pcfg.ExtraEnvVars) + logger.Printf(ctx, "ProfileLocation: %v", pcfg.Location) + logger.Printf(ctx, "ProfileTempLocation: %v", pcfg.TempLocation) + logger.Printf(ctx, "ProfileUploadIntervalSec: %v", pcfg.UploadIntervalSec) + logger.Printf(ctx, "ProfilerStopAfterSec: %v", pcfg.StopAfterSec) + logger.Printf(ctx, "ProfilerStopAfterCrash: %v", pcfg.StopAfterCrash) + logger.Printf(ctx, "ProfilePostprocessIntervalSec: %v", pcfg.PostprocessIntervalSec) + if err := os.MkdirAll(pcfg.TempLocation, 0755); err != nil { + logger.Warnf(ctx, "Failed to create ProfileTempLocation: %v", err) + } + + if pcfg.GcsDestPath != "" { + if _, err := exec.LookPath("gcloud"); err != nil { + logger.Errorf(ctx, "gcloud is not available, profiles will not be uploaded.") + } else { + if pcfg.UploadIntervalSec > 0 { + ticker := time.NewTicker(time.Duration(pcfg.UploadIntervalSec) * time.Second) + go func() { + for range ticker.C { + syncProfilesToGCS(ctx, logger, pcfg.TempLocation, pcfg.GcsDestPath) + } + }() + } + } + } + + if pcfg.Agent == "memray" { + go postProcessProfilesLoop(ctx, logger, pcfg.TempLocation, pcfg.PostprocessIntervalSec) + } +} + +// maybeWithProfiler builds the execution arguments and environment variables if profiling is enabled and active. +func maybeWithProfiler( + ctx context.Context, + logger *tools.Logger, + workerId string, + currentProg string, + currentArgs []string, + currentEnv map[string]string, +) (string, []string, map[string]string, bool) { + pcfg := getProfilerConfig(ctx) + if pcfg == nil { + return currentProg, currentArgs, currentEnv, false + } + + if _, err := os.Stat(pcfg.StopSentinelPath); err == nil { + return currentProg, currentArgs, currentEnv, false + } + + prog := currentProg + var args []string + // Copy env + env := make(map[string]string) + for k, v := range currentEnv { + env[k] = v + } + + if pcfg.Agent == "memray" { + timeSuffix := time.Now().Format("20060102150405") + memrayFile := filepath.Join(pcfg.TempLocation, fmt.Sprintf("memray-%s-%s.bin", workerId, timeSuffix)) + args = []string{"-m", "memray", "run"} + args = append(args, pcfg.ExtraArgs...) + args = append(args, "-o", memrayFile, "-m", sdkHarnessEntrypoint) + } else if pcfg.Agent == "tcmalloc" { + tcmallocHeapPath := filepath.Join(pcfg.TempLocation, fmt.Sprintf("tcmalloc-%s", workerId)) + existingPreload := os.Getenv("LD_PRELOAD") + if existingPreload != "" { + env["LD_PRELOAD"] = existingPreload + ":/usr/lib/x86_64-linux-gnu/libtcmalloc.so.4" + } else { + env["LD_PRELOAD"] = "/usr/lib/x86_64-linux-gnu/libtcmalloc.so.4" + } Review Comment: fixing in new commits -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
