Prototype(symbolization): Add symbolization in Pyroscope read path #3799
+65,857
−69,798
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "log" | ||
| "os" | ||
|
|
||
| log2 "github.com/go-kit/log" | ||
|
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| googlev1 "github.com/grafana/pyroscope/api/gen/proto/go/google/v1" | ||
| "github.com/grafana/pyroscope/pkg/experiment/symbolizer" | ||
| ) | ||
|
|
||
| const ( | ||
| // buildID = "c047672cae7964324658491e7dee26748ae5d2f8" | ||
| //buildID = "2fa2055ef20fabc972d5751147e093275514b142" | ||
| buildID = "6d64b17fbac799e68da7ebd9985ddf9b5cb375e6" | ||
| invalidName = "<invalid>" | ||
| ) | ||
|
|
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| func main() { | ||
| client := &localDebuginfodClient{debugFilePath: "/usr/lib/debug/.build-id/6d/64b17fbac799e68da7ebd9985ddf9b5cb375e6.debug"} | ||
| logger := log2.NewLogfmtLogger(os.Stdout) | ||
| s, err := symbolizer.NewProfileSymbolizer(logger, client, nil, symbolizer.NewMetrics(nil), 10, 10) | ||
|
|
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| if err != nil { | ||
| log.Fatalf("Failed to create debuginfod client: %v", err) | ||
| } | ||
|
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| ctx := context.Background() | ||
| _, err = client.FetchDebuginfo(ctx, buildID) | ||
| if err != nil { | ||
| log.Fatalf("Failed to fetch debug info: %v", err) | ||
| } | ||
|
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| profile := &googlev1.Profile{ | ||
| Mapping: []*googlev1.Mapping{{ | ||
| MemoryStart: 0x28000, | ||
| MemoryLimit: 0x1b0000, | ||
| FileOffset: 0x28000, | ||
| }}, | ||
| Location: []*googlev1.Location{ | ||
| { | ||
| MappingId: 1, | ||
| Address: 0x2a28a, | ||
| }, | ||
| { | ||
| MappingId: 1, | ||
| Address: 0x124dec, | ||
| }, | ||
| { | ||
| MappingId: 1, | ||
| Address: 0x2a1c9, | ||
| }, | ||
| }, | ||
| StringTable: []string{"", buildID}, | ||
| } | ||
|
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| if err := s.SymbolizePprof(ctx, profile); err != nil { | ||
| log.Fatalf("Failed to symbolize: %v", err) | ||
| } | ||
|
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| printResults(profile) | ||
| } | ||
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| func printResults(p *googlev1.Profile) { | ||
| fmt.Println("Symbolization Results:") | ||
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| fmt.Println("\nFunction Table:") | ||
| for i, fn := range p.Function { | ||
| name := invalidName | ||
| if fn.Name >= 0 && int(fn.Name) < len(p.StringTable) { | ||
| name = p.StringTable[fn.Name] | ||
| } | ||
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| filename := invalidName | ||
| if fn.Filename >= 0 && int(fn.Filename) < len(p.StringTable) { | ||
| filename = p.StringTable[fn.Filename] | ||
| } | ||
|
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| fmt.Printf(" Function[%d]: ID=%d, Name=%s, File=%s, StartLine=%d\n", | ||
| i, fn.Id, name, filename, fn.StartLine) | ||
| } | ||
|
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| fmt.Println("\nLocations:") | ||
| for _, loc := range p.Location { | ||
| fmt.Printf("\nAddress: 0x%x\n", loc.Address) | ||
| if len(loc.Line) == 0 { | ||
| fmt.Println(" No symbolization information found") | ||
| continue | ||
| } | ||
|
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| for i, line := range loc.Line { | ||
| fmt.Printf(" Line %d (FunctionID=%d):\n", i+1, line.FunctionId) | ||
|
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| var fn *googlev1.Function | ||
| for _, function := range p.Function { | ||
| if function.Id == line.FunctionId { | ||
| fn = function | ||
| break | ||
| } | ||
| } | ||
|
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| if fn != nil { | ||
| name := invalidName | ||
| if fn.Name >= 0 && int(fn.Name) < len(p.StringTable) { | ||
| name = p.StringTable[fn.Name] | ||
| } | ||
|
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| filename := invalidName | ||
| if fn.Filename >= 0 && int(fn.Filename) < len(p.StringTable) { | ||
| filename = p.StringTable[fn.Filename] | ||
| } | ||
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| fmt.Printf(" Function: %s\n", name) | ||
| fmt.Printf(" File: %s\n", filename) | ||
| fmt.Printf(" Line: %d\n", line.Line) | ||
| fmt.Printf(" StartLine: %d\n", fn.StartLine) | ||
| } else { | ||
| fmt.Printf(" ERROR: Cannot find function with ID %d\n", line.FunctionId) | ||
| } | ||
| } | ||
| } | ||
| fmt.Println("\nSymbolization completed successfully.") | ||
| } | ||
|
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| type localDebuginfodClient struct { | ||
| debugFilePath string | ||
| } | ||
|
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| func (c *localDebuginfodClient) FetchDebuginfo(ctx context.Context, buildID string) (io.ReadCloser, error) { | ||
| return os.Open(c.debugFilePath) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| package lidia | ||
|
|
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| // BinaryLayoutInfo represents the layout information of the binary | ||
| type BinaryLayoutInfo struct { | ||
| Type uint16 // e_type from ELF header | ||
| ProgramHeaders []ProgramHeaderInfo | ||
| } | ||
|
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| // ProgramHeaderInfo represents a program header from the ELF file | ||
| type ProgramHeaderInfo struct { | ||
| Type uint32 | ||
| Flags uint32 | ||
| Offset uint64 | ||
| VirtualAddr uint64 | ||
| PhysAddr uint64 | ||
| FileSize uint64 | ||
| MemSize uint64 | ||
| Align uint64 | ||
| } |
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Is this possible?
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Not as of now.