Integrate object file

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

Makefile

@@ -90,7 +90,7 @@ $(OUT_BIN_DEBUG_INFO): $(DOCKER_BUILDER) | $(OUT_DIR)
 	$(call docker_builder_make,$@ VERSION=$(VERSION))
 endif
 
-lint:
+lint: check-license
 	$(go_env) golangci-lint run
 
 bpf_compile_tools = $(CMD_LLC) $(CMD_CLANG)
@@ -240,7 +240,7 @@ README.md: $(CMD_EMBEDMD) $(OUT_DIR)/help.txt deploy/manifests
 	$(CMD_EMBEDMD) -w README.md
 
 .PHONY: format
-format: go/fmt check-license
+format: go/fmt
 
 .PHONY: c/fmt
 c/fmt:

cmd/parca-agent/main.go

@@ -51,6 +51,7 @@ import (
 	"github.com/parca-dev/parca-agent/pkg/discovery"
 	"github.com/parca-dev/parca-agent/pkg/ksym"
 	"github.com/parca-dev/parca-agent/pkg/logger"
+	"github.com/parca-dev/parca-agent/pkg/objectfile"
 	"github.com/parca-dev/parca-agent/pkg/target"
 	"github.com/parca-dev/parca-agent/pkg/template"
 )
@@ -135,6 +136,7 @@ func main() {
 	}
 
 	ksymCache := ksym.NewKsymCache(logger)
+	objCache := objectfile.NewCache()
 
 	var (
 		configs discovery.Configs
@@ -159,7 +161,7 @@ func main() {
 	}
 
 	externalLabels := getExternalLabels(flags.ExternalLabel, flags.Node)
-	tm := target.NewManager(logger, reg, externalLabels, ksymCache, profileListener, debugInfoClient, flags.ProfilingDuration, flags.TempDir)
+	tm := target.NewManager(logger, reg, ksymCache, objCache, profileListener, debugInfoClient, flags.ProfilingDuration, externalLabels, flags.TempDir)
 
 	mux.Handle("/metrics", promhttp.HandlerFor(reg, promhttp.HandlerOpts{}))
 	mux.HandleFunc("/debug/pprof/", pprof.Index)

pkg/containerutils/containerd/containerd.go

@@ -92,10 +92,10 @@ func (c *Client) PIDFromContainerID(containerID string) (int, error) {
 		return -1, fmt.Errorf("container status reply from runtime doesn't contain 'info'")
 	}
 
-	containerdInspect := struct{ Pid int }{}
+	containerdInspect := struct{ PID int }{}
 	if err := json.Unmarshal([]byte(info), &containerdInspect); err != nil {
 		return -1, err
 	}
 
-	return containerdInspect.Pid, nil
+	return containerdInspect.PID, nil
 }

pkg/debuginfo/cache.go

@@ -0,0 +1,37 @@
+// Copyright 2022 The Parca Authors
+// 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 debuginfo
+
+import (
+	"github.com/parca-dev/parca-agent/pkg/objectfile"
+)
+
+type cache struct {
+	files map[string]*debugInfoFile
+}
+
+func newCache() *cache {
+	return &cache{
+		files: make(map[string]*debugInfoFile),
+	}
+}
+
+func (c *cache) debugInfoFile(objFile *objectfile.ObjectFile) *debugInfoFile {
+	if dbgFile, ok := c.files[objFile.BuildID]; ok {
+		return dbgFile
+	}
+	dbgInfoFile := debugInfoFile{ObjectFile: objFile}
+	c.files[objFile.BuildID] = &dbgInfoFile
+	return &dbgInfoFile
+}