[PoC] Run integration tests locally

[MrAlias]

Adds a runner utility to run testing target applications with auto-instrumentation setup. This removes the need to have a kubernetes cluster, or even docker containers, to run our integration tests.

Example

$ sudo ./runner -bin ../e2e/autosdk/autosdk -log-level=info -out=test.json
{"time":"2024-09-30T07:47:10.620513125-07:00","level":"INFO","source":{"function":"go.opentelemetry.io/auto/internal/pkg/process.remoteAllocate.func1","file":"/home/tyler/go/src/go.opentelemetry.io/auto/internal/pkg/process/allocate.go","line":70},"msg":"Detaching from process","pid":1698111}
{"time":"2024-09-30T07:47:10.620603764-07:00","level":"INFO","source":{"function":"go.opentelemetry.io/auto.NewInstrumentation","file":"/home/tyler/go/src/go.opentelemetry.io/auto/instrumentation.go","line":113},"msg":"target process analysis completed","pid":1698111,"go_version":"1.23.1","dependencies":{"github.com/gogo/protobuf":"1.3.2","github.com/json-iterator/go":"1.1.12","github.com/modern-go/concurrent":"0.0.0-20180306012644-bacd9c7ef1dd","github.com/modern-go/reflect2":"1.0.2","go.opentelemetry.io/auto/sdk":"0.0.0-00010101000000-000000000000","go.opentelemetry.io/collector/pdata":"1.16.0","go.opentelemetry.io/otel":"1.30.0","go.opentelemetry.io/otel/trace":"1.30.0","go.uber.org/multierr":"1.11.0","golang.org/x/net":"0.26.0","golang.org/x/sys":"0.25.0","golang.org/x/text":"0.16.0","google.golang.org/genproto/googleapis/rpc":"0.0.0-20240604185151-ef581f913117","google.golang.org/grpc":"1.66.2","google.golang.org/protobuf":"1.34.2","std":"1.23.1"},"total_functions_found":8}
{"time":"2024-09-30T07:47:10.620923226-07:00","level":"INFO","source":{"function":"go.opentelemetry.io/auto/internal/pkg/instrumentation.(*Manager).load","file":"/home/tyler/go/src/go.opentelemetry.io/auto/internal/pkg/instrumentation/manager.go","line":324},"msg":"loading probe","name":{"SpanKind":3,"InstrumentedPkg":"google.golang.org/grpc"}}
{"time":"2024-09-30T07:47:10.94166247-07:00","level":"INFO","source":{"function":"go.opentelemetry.io/auto/internal/pkg/instrumentation.(*Manager).load","file":"/home/tyler/go/src/go.opentelemetry.io/auto/internal/pkg/instrumentation/manager.go","line":324},"msg":"loading probe","name":{"SpanKind":2,"InstrumentedPkg":"google.golang.org/grpc"}}
{"time":"2024-09-30T07:47:10.970407948-07:00","level":"INFO","source":{"function":"go.opentelemetry.io/auto/internal/pkg/instrumentation.(*Manager).load","file":"/home/tyler/go/src/go.opentelemetry.io/auto/internal/pkg/instrumentation/manager.go","line":324},"msg":"loading probe","name":{"SpanKind":3,"InstrumentedPkg":"go.opentelemetry.io/auto"}}
{"time":"2024-09-30T07:47:10.97756692-07:00","level":"INFO","source":{"function":"go.opentelemetry.io/auto/internal/pkg/instrumentation.(*Manager).ConfigLoop","file":"/home/tyler/go/src/go.opentelemetry.io/auto/internal/pkg/instrumentation/manager.go","line":238},"msg":"Configuration provider closed, configuration updates will no longer be received"}

$ sudo cat test.json
{"resourceSpans":[{"resource":{"attributes":[{"key":"process.runtime.description","value":{"stringValue":"go version 1.23.1 linux/amd64"}},{"key":"process.runtime.name","value":{"stringValue":"go"}},{"key":"process.runtime.version","value":{"stringValue":"1.23.1"}},{"key":"service.name","value":{"stringValue":"testing"}},{"key":"telemetry.distro.name","value":{"stringValue":"opentelemetry-go-instrumentation"}},{"key":"telemetry.distro.version","value":{"stringValue":"v0.14.0-alpha"}},{"key":"telemetry.sdk.language","value":{"stringValue":"go"}}]},"scopeSpans":[{"scope":{"name":"go.opentelemetry.io/auto/internal/test/e2e/autosdk","version":"v1.23.42"},"spans":[{"traceId":"cdf1e88da751aaa9491577ec7b09638a","spanId":"a2a171ba79099060","parentSpanId":"5e4f77143b8584ae","name":"Run","kind":3,"startTimeUnixNano":"946684800000500000","endTimeUnixNano":"946684801000000000","status":{}},{"traceId":"cdf1e88da751aaa9491577ec7b09638a","spanId":"5e4f77143b8584ae","parentSpanId":"","name":"main","kind":3,"startTimeUnixNano":"946684800000000000","endTimeUnixNano":"946684805000000000","status":{}}]}],"schemaUrl":"https://opentelemetry.io/schemas/1.26.0"}]}

TODO

• Needs to be run as sudo, which means the output traces are owned by root
• Makefile needs to be updated to run this and evaluate the output
• Target binaries need to be updated to support the SIGCONT signal. This may mean having a generic wrapper of these binaries would be better

[pellared]

I guess it makes also debugging easier.

[RonFed]

looks great.
To run this on non-Linux machines we'll need to run it inside a container, right?

[MrAlias]

looks great. To run this on non-Linux machines we'll need to run it inside a container, right?

I'm guessing, based on what @damemi said in the SIG meeting, it'll need to be run in a VM given the kernel still needs to support eBPF outside of the container.

That said, we'll probably still want to run this in a container on Linux to get sandbox the permissions issues and not have to run this with sudo.