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Phase 2: Implement Execution Environment Abstraction (v0.3.0)

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This commit implements Phase 2 of the CHORUS Task Execution Engine development plan,
providing a comprehensive execution environment abstraction layer with Docker
container sandboxing support.

## New Features

### Core Sandbox Interface
- Comprehensive ExecutionSandbox interface with isolated task execution
- Support for command execution, file I/O, environment management
- Resource usage monitoring and sandbox lifecycle management
- Standardized error handling with SandboxError types and categories

### Docker Container Sandbox Implementation
- Full Docker API integration with secure container creation
- Transparent repository mounting with configurable read/write access
- Advanced security policies with capability dropping and privilege controls
- Comprehensive resource limits (CPU, memory, disk, processes, file handles)
- Support for tmpfs mounts, masked paths, and read-only bind mounts
- Container lifecycle management with proper cleanup and health monitoring

### Security & Resource Management
- Configurable security policies with SELinux, AppArmor, and Seccomp support
- Fine-grained capability management with secure defaults
- Network isolation options with configurable DNS and proxy settings
- Resource monitoring with real-time CPU, memory, and network usage tracking
- Comprehensive ulimits configuration for process and file handle limits

### Repository Integration
- Seamless repository mounting from local paths to container workspaces
- Git configuration support with user credentials and global settings
- File inclusion/exclusion patterns for selective repository access
- Configurable permissions and ownership for mounted repositories

### Testing Infrastructure
- Comprehensive test suite with 60+ test cases covering all functionality
- Docker integration tests with Alpine Linux containers (skipped in short mode)
- Mock sandbox implementation for unit testing without Docker dependencies
- Security policy validation tests with read-only filesystem enforcement
- Resource usage monitoring and cleanup verification tests

## Technical Details

### Dependencies Added
- github.com/docker/docker v28.4.0+incompatible - Docker API client
- github.com/docker/go-connections v0.6.0 - Docker connection utilities
- github.com/docker/go-units v0.5.0 - Docker units and formatting
- Associated Docker API dependencies for complete container management

### Architecture
- Interface-driven design enabling multiple sandbox implementations
- Comprehensive configuration structures for all sandbox aspects
- Resource usage tracking with detailed metrics collection
- Error handling with retryable error classification
- Proper cleanup and resource management throughout sandbox lifecycle

### Compatibility
- Maintains backward compatibility with existing CHORUS architecture
- Designed for future integration with Phase 3 Core Task Execution Engine
- Extensible design supporting additional sandbox implementations (VM, process)

This Phase 2 implementation provides the foundation for secure, isolated task
execution that will be integrated with the AI model providers from Phase 1
in the upcoming Phase 3 development.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
anthonyrawlins
2025-09-25 14:28:08 +10:00
parent d1252ade69
commit 8d9b62daf3
653 changed files with 88039 additions and 3766 deletions
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
import (
"context"
"io"
"net/http"
"net/url"
"strings"
)
// DefaultClient is the default Client and is used by Get, Head, Post and PostForm.
// Please be careful of initialization order - for example, if you change
// the global propagator, the DefaultClient might still be using the old one.
var DefaultClient = &http.Client{Transport: NewTransport(http.DefaultTransport)}
// Get is a convenient replacement for http.Get that adds a span around the request.
func Get(ctx context.Context, targetURL string) (resp *http.Response, err error) {
req, err := http.NewRequestWithContext(ctx, http.MethodGet, targetURL, http.NoBody)
if err != nil {
return nil, err
}
return DefaultClient.Do(req)
}
// Head is a convenient replacement for http.Head that adds a span around the request.
func Head(ctx context.Context, targetURL string) (resp *http.Response, err error) {
req, err := http.NewRequestWithContext(ctx, http.MethodHead, targetURL, http.NoBody)
if err != nil {
return nil, err
}
return DefaultClient.Do(req)
}
// Post is a convenient replacement for http.Post that adds a span around the request.
func Post(ctx context.Context, targetURL, contentType string, body io.Reader) (resp *http.Response, err error) {
req, err := http.NewRequestWithContext(ctx, http.MethodPost, targetURL, body)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", contentType)
return DefaultClient.Do(req)
}
// PostForm is a convenient replacement for http.PostForm that adds a span around the request.
func PostForm(ctx context.Context, targetURL string, data url.Values) (resp *http.Response, err error) {
return Post(ctx, targetURL, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
import (
"net/http"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/trace"
)
// Attribute keys that can be added to a span.
const (
ReadBytesKey = attribute.Key("http.read_bytes") // if anything was read from the request body, the total number of bytes read
ReadErrorKey = attribute.Key("http.read_error") // If an error occurred while reading a request, the string of the error (io.EOF is not recorded)
WroteBytesKey = attribute.Key("http.wrote_bytes") // if anything was written to the response writer, the total number of bytes written
WriteErrorKey = attribute.Key("http.write_error") // if an error occurred while writing a reply, the string of the error (io.EOF is not recorded)
)
// Filter is a predicate used to determine whether a given http.request should
// be traced. A Filter must return true if the request should be traced.
type Filter func(*http.Request) bool
func newTracer(tp trace.TracerProvider) trace.Tracer {
return tp.Tracer(ScopeName, trace.WithInstrumentationVersion(Version()))
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
import (
"context"
"net/http"
"net/http/httptrace"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
)
// ScopeName is the instrumentation scope name.
const ScopeName = "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
// config represents the configuration options available for the http.Handler
// and http.Transport types.
type config struct {
ServerName string
Tracer trace.Tracer
Meter metric.Meter
Propagators propagation.TextMapPropagator
SpanStartOptions []trace.SpanStartOption
PublicEndpoint bool
PublicEndpointFn func(*http.Request) bool
ReadEvent bool
WriteEvent bool
Filters []Filter
SpanNameFormatter func(string, *http.Request) string
ClientTrace func(context.Context) *httptrace.ClientTrace
TracerProvider trace.TracerProvider
MeterProvider metric.MeterProvider
MetricAttributesFn func(*http.Request) []attribute.KeyValue
}
// Option interface used for setting optional config properties.
type Option interface {
apply(*config)
}
type optionFunc func(*config)
func (o optionFunc) apply(c *config) {
o(c)
}
// newConfig creates a new config struct and applies opts to it.
func newConfig(opts ...Option) *config {
c := &config{
Propagators: otel.GetTextMapPropagator(),
MeterProvider: otel.GetMeterProvider(),
}
for _, opt := range opts {
opt.apply(c)
}
// Tracer is only initialized if manually specified. Otherwise, can be passed with the tracing context.
if c.TracerProvider != nil {
c.Tracer = newTracer(c.TracerProvider)
}
c.Meter = c.MeterProvider.Meter(
ScopeName,
metric.WithInstrumentationVersion(Version()),
)
return c
}
// WithTracerProvider specifies a tracer provider to use for creating a tracer.
// If none is specified, the global provider is used.
func WithTracerProvider(provider trace.TracerProvider) Option {
return optionFunc(func(cfg *config) {
if provider != nil {
cfg.TracerProvider = provider
}
})
}
// WithMeterProvider specifies a meter provider to use for creating a meter.
// If none is specified, the global provider is used.
func WithMeterProvider(provider metric.MeterProvider) Option {
return optionFunc(func(cfg *config) {
if provider != nil {
cfg.MeterProvider = provider
}
})
}
// WithPublicEndpoint configures the Handler to link the span with an incoming
// span context. If this option is not provided, then the association is a child
// association instead of a link.
func WithPublicEndpoint() Option {
return optionFunc(func(c *config) {
c.PublicEndpoint = true
})
}
// WithPublicEndpointFn runs with every request, and allows conditionally
// configuring the Handler to link the span with an incoming span context. If
// this option is not provided or returns false, then the association is a
// child association instead of a link.
// Note: WithPublicEndpoint takes precedence over WithPublicEndpointFn.
func WithPublicEndpointFn(fn func(*http.Request) bool) Option {
return optionFunc(func(c *config) {
c.PublicEndpointFn = fn
})
}
// WithPropagators configures specific propagators. If this
// option isn't specified, then the global TextMapPropagator is used.
func WithPropagators(ps propagation.TextMapPropagator) Option {
return optionFunc(func(c *config) {
if ps != nil {
c.Propagators = ps
}
})
}
// WithSpanOptions configures an additional set of
// trace.SpanOptions, which are applied to each new span.
func WithSpanOptions(opts ...trace.SpanStartOption) Option {
return optionFunc(func(c *config) {
c.SpanStartOptions = append(c.SpanStartOptions, opts...)
})
}
// WithFilter adds a filter to the list of filters used by the handler.
// If any filter indicates to exclude a request then the request will not be
// traced. All filters must allow a request to be traced for a Span to be created.
// If no filters are provided then all requests are traced.
// Filters will be invoked for each processed request, it is advised to make them
// simple and fast.
func WithFilter(f Filter) Option {
return optionFunc(func(c *config) {
c.Filters = append(c.Filters, f)
})
}
type event int
// Different types of events that can be recorded, see WithMessageEvents.
const (
ReadEvents event = iota
WriteEvents
)
// WithMessageEvents configures the Handler to record the specified events
// (span.AddEvent) on spans. By default only summary attributes are added at the
// end of the request.
//
// Valid events are:
// - ReadEvents: Record the number of bytes read after every http.Request.Body.Read
// using the ReadBytesKey
// - WriteEvents: Record the number of bytes written after every http.ResponeWriter.Write
// using the WriteBytesKey
func WithMessageEvents(events ...event) Option {
return optionFunc(func(c *config) {
for _, e := range events {
switch e {
case ReadEvents:
c.ReadEvent = true
case WriteEvents:
c.WriteEvent = true
}
}
})
}
// WithSpanNameFormatter takes a function that will be called on every
// request and the returned string will become the Span Name.
//
// When using [http.ServeMux] (or any middleware that sets the Pattern of [http.Request]),
// the span name formatter will run twice. Once when the span is created, and
// second time after the middleware, so the pattern can be used.
func WithSpanNameFormatter(f func(operation string, r *http.Request) string) Option {
return optionFunc(func(c *config) {
c.SpanNameFormatter = f
})
}
// WithClientTrace takes a function that returns client trace instance that will be
// applied to the requests sent through the otelhttp Transport.
func WithClientTrace(f func(context.Context) *httptrace.ClientTrace) Option {
return optionFunc(func(c *config) {
c.ClientTrace = f
})
}
// WithServerName returns an Option that sets the name of the (virtual) server
// handling requests.
func WithServerName(server string) Option {
return optionFunc(func(c *config) {
c.ServerName = server
})
}
// WithMetricAttributesFn returns an Option to set a function that maps an HTTP request to a slice of attribute.KeyValue.
// These attributes will be included in metrics for every request.
func WithMetricAttributesFn(metricAttributesFn func(r *http.Request) []attribute.KeyValue) Option {
return optionFunc(func(c *config) {
c.MetricAttributesFn = metricAttributesFn
})
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package otelhttp provides an http.Handler and functions that are intended
// to be used to add tracing by wrapping existing handlers (with Handler) and
// routes WithRouteTag.
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"

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vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/handler.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
import (
"net/http"
"time"
"github.com/felixge/httpsnoop"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/request"
"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv"
)
// middleware is an http middleware which wraps the next handler in a span.
type middleware struct {
operation string
server string
tracer trace.Tracer
propagators propagation.TextMapPropagator
spanStartOptions []trace.SpanStartOption
readEvent bool
writeEvent bool
filters []Filter
spanNameFormatter func(string, *http.Request) string
publicEndpoint bool
publicEndpointFn func(*http.Request) bool
metricAttributesFn func(*http.Request) []attribute.KeyValue
semconv semconv.HTTPServer
}
func defaultHandlerFormatter(operation string, _ *http.Request) string {
return operation
}
// NewHandler wraps the passed handler in a span named after the operation and
// enriches it with metrics.
func NewHandler(handler http.Handler, operation string, opts ...Option) http.Handler {
return NewMiddleware(operation, opts...)(handler)
}
// NewMiddleware returns a tracing and metrics instrumentation middleware.
// The handler returned by the middleware wraps a handler
// in a span named after the operation and enriches it with metrics.
func NewMiddleware(operation string, opts ...Option) func(http.Handler) http.Handler {
h := middleware{
operation: operation,
}
defaultOpts := []Option{
WithSpanOptions(trace.WithSpanKind(trace.SpanKindServer)),
WithSpanNameFormatter(defaultHandlerFormatter),
}
c := newConfig(append(defaultOpts, opts...)...)
h.configure(c)
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
h.serveHTTP(w, r, next)
})
}
}
func (h *middleware) configure(c *config) {
h.tracer = c.Tracer
h.propagators = c.Propagators
h.spanStartOptions = c.SpanStartOptions
h.readEvent = c.ReadEvent
h.writeEvent = c.WriteEvent
h.filters = c.Filters
h.spanNameFormatter = c.SpanNameFormatter
h.publicEndpoint = c.PublicEndpoint
h.publicEndpointFn = c.PublicEndpointFn
h.server = c.ServerName
h.semconv = semconv.NewHTTPServer(c.Meter)
h.metricAttributesFn = c.MetricAttributesFn
}
// serveHTTP sets up tracing and calls the given next http.Handler with the span
// context injected into the request context.
func (h *middleware) serveHTTP(w http.ResponseWriter, r *http.Request, next http.Handler) {
requestStartTime := time.Now()
for _, f := range h.filters {
if !f(r) {
// Simply pass through to the handler if a filter rejects the request
next.ServeHTTP(w, r)
return
}
}
ctx := h.propagators.Extract(r.Context(), propagation.HeaderCarrier(r.Header))
opts := []trace.SpanStartOption{
trace.WithAttributes(h.semconv.RequestTraceAttrs(h.server, r, semconv.RequestTraceAttrsOpts{})...),
}
opts = append(opts, h.spanStartOptions...)
if h.publicEndpoint || (h.publicEndpointFn != nil && h.publicEndpointFn(r.WithContext(ctx))) {
opts = append(opts, trace.WithNewRoot())
// Linking incoming span context if any for public endpoint.
if s := trace.SpanContextFromContext(ctx); s.IsValid() && s.IsRemote() {
opts = append(opts, trace.WithLinks(trace.Link{SpanContext: s}))
}
}
tracer := h.tracer
if tracer == nil {
if span := trace.SpanFromContext(r.Context()); span.SpanContext().IsValid() {
tracer = newTracer(span.TracerProvider())
} else {
tracer = newTracer(otel.GetTracerProvider())
}
}
if startTime := StartTimeFromContext(ctx); !startTime.IsZero() {
opts = append(opts, trace.WithTimestamp(startTime))
requestStartTime = startTime
}
ctx, span := tracer.Start(ctx, h.spanNameFormatter(h.operation, r), opts...)
defer span.End()
readRecordFunc := func(int64) {}
if h.readEvent {
readRecordFunc = func(n int64) {
span.AddEvent("read", trace.WithAttributes(ReadBytesKey.Int64(n)))
}
}
// if request body is nil or NoBody, we don't want to mutate the body as it
// will affect the identity of it in an unforeseeable way because we assert
// ReadCloser fulfills a certain interface and it is indeed nil or NoBody.
bw := request.NewBodyWrapper(r.Body, readRecordFunc)
if r.Body != nil && r.Body != http.NoBody {
r.Body = bw
}
writeRecordFunc := func(int64) {}
if h.writeEvent {
writeRecordFunc = func(n int64) {
span.AddEvent("write", trace.WithAttributes(WroteBytesKey.Int64(n)))
}
}
rww := request.NewRespWriterWrapper(w, writeRecordFunc)
// Wrap w to use our ResponseWriter methods while also exposing
// other interfaces that w may implement (http.CloseNotifier,
// http.Flusher, http.Hijacker, http.Pusher, io.ReaderFrom).
w = httpsnoop.Wrap(w, httpsnoop.Hooks{
Header: func(httpsnoop.HeaderFunc) httpsnoop.HeaderFunc {
return rww.Header
},
Write: func(httpsnoop.WriteFunc) httpsnoop.WriteFunc {
return rww.Write
},
WriteHeader: func(httpsnoop.WriteHeaderFunc) httpsnoop.WriteHeaderFunc {
return rww.WriteHeader
},
Flush: func(httpsnoop.FlushFunc) httpsnoop.FlushFunc {
return rww.Flush
},
})
labeler, found := LabelerFromContext(ctx)
if !found {
ctx = ContextWithLabeler(ctx, labeler)
}
r = r.WithContext(ctx)
next.ServeHTTP(w, r)
if r.Pattern != "" {
span.SetName(h.spanNameFormatter(h.operation, r))
}
statusCode := rww.StatusCode()
bytesWritten := rww.BytesWritten()
span.SetStatus(h.semconv.Status(statusCode))
span.SetAttributes(h.semconv.ResponseTraceAttrs(semconv.ResponseTelemetry{
StatusCode: statusCode,
ReadBytes: bw.BytesRead(),
ReadError: bw.Error(),
WriteBytes: bytesWritten,
WriteError: rww.Error(),
})...)
// Use floating point division here for higher precision (instead of Millisecond method).
elapsedTime := float64(time.Since(requestStartTime)) / float64(time.Millisecond)
metricAttributes := semconv.MetricAttributes{
Req: r,
StatusCode: statusCode,
AdditionalAttributes: append(labeler.Get(), h.metricAttributesFromRequest(r)...),
}
h.semconv.RecordMetrics(ctx, semconv.ServerMetricData{
ServerName: h.server,
ResponseSize: bytesWritten,
MetricAttributes: metricAttributes,
MetricData: semconv.MetricData{
RequestSize: bw.BytesRead(),
ElapsedTime: elapsedTime,
},
})
}
func (h *middleware) metricAttributesFromRequest(r *http.Request) []attribute.KeyValue {
var attributeForRequest []attribute.KeyValue
if h.metricAttributesFn != nil {
attributeForRequest = h.metricAttributesFn(r)
}
return attributeForRequest
}
// WithRouteTag annotates spans and metrics with the provided route name
// with HTTP route attribute.
func WithRouteTag(route string, h http.Handler) http.Handler {
attr := semconv.NewHTTPServer(nil).Route(route)
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
span := trace.SpanFromContext(r.Context())
span.SetAttributes(attr)
labeler, _ := LabelerFromContext(r.Context())
labeler.Add(attr)
h.ServeHTTP(w, r)
})
}

80
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/request/body_wrapper.go generated vendored Normal file
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@@ -0,0 +1,80 @@
// Code generated by gotmpl. DO NOT MODIFY.
// source: internal/shared/request/body_wrapper.go.tmpl
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package request provides types and functionality to handle HTTP request
// handling.
package request // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/request"
import (
"io"
"sync"
)
var _ io.ReadCloser = &BodyWrapper{}
// BodyWrapper wraps a http.Request.Body (an io.ReadCloser) to track the number
// of bytes read and the last error.
type BodyWrapper struct {
io.ReadCloser
OnRead func(n int64) // must not be nil
mu sync.Mutex
read int64
err error
}
// NewBodyWrapper creates a new BodyWrapper.
//
// The onRead attribute is a callback that will be called every time the data
// is read, with the number of bytes being read.
func NewBodyWrapper(body io.ReadCloser, onRead func(int64)) *BodyWrapper {
return &BodyWrapper{
ReadCloser: body,
OnRead: onRead,
}
}
// Read reads the data from the io.ReadCloser, and stores the number of bytes
// read and the error.
func (w *BodyWrapper) Read(b []byte) (int, error) {
n, err := w.ReadCloser.Read(b)
n1 := int64(n)
w.updateReadData(n1, err)
w.OnRead(n1)
return n, err
}
func (w *BodyWrapper) updateReadData(n int64, err error) {
w.mu.Lock()
defer w.mu.Unlock()
w.read += n
if err != nil {
w.err = err
}
}
// Close closes the io.ReadCloser.
func (w *BodyWrapper) Close() error {
return w.ReadCloser.Close()
}
// BytesRead returns the number of bytes read up to this point.
func (w *BodyWrapper) BytesRead() int64 {
w.mu.Lock()
defer w.mu.Unlock()
return w.read
}
// Error returns the last error.
func (w *BodyWrapper) Error() error {
w.mu.Lock()
defer w.mu.Unlock()
return w.err
}

10
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/request/gen.go generated vendored Normal file
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@@ -0,0 +1,10 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package request // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/request"
// Generate request package:
//go:generate gotmpl --body=../../../../../../internal/shared/request/body_wrapper.go.tmpl "--data={}" --out=body_wrapper.go
//go:generate gotmpl --body=../../../../../../internal/shared/request/body_wrapper_test.go.tmpl "--data={}" --out=body_wrapper_test.go
//go:generate gotmpl --body=../../../../../../internal/shared/request/resp_writer_wrapper.go.tmpl "--data={}" --out=resp_writer_wrapper.go
//go:generate gotmpl --body=../../../../../../internal/shared/request/resp_writer_wrapper_test.go.tmpl "--data={}" --out=resp_writer_wrapper_test.go

122
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/request/resp_writer_wrapper.go generated vendored Normal file
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@@ -0,0 +1,122 @@
// Code generated by gotmpl. DO NOT MODIFY.
// source: internal/shared/request/resp_writer_wrapper.go.tmpl
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package request // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/request"
import (
"net/http"
"sync"
)
var _ http.ResponseWriter = &RespWriterWrapper{}
// RespWriterWrapper wraps a http.ResponseWriter in order to track the number of
// bytes written, the last error, and to catch the first written statusCode.
// TODO: The wrapped http.ResponseWriter doesn't implement any of the optional
// types (http.Hijacker, http.Pusher, http.CloseNotifier, etc)
// that may be useful when using it in real life situations.
type RespWriterWrapper struct {
http.ResponseWriter
OnWrite func(n int64) // must not be nil
mu sync.RWMutex
written int64
statusCode int
err error
wroteHeader bool
}
// NewRespWriterWrapper creates a new RespWriterWrapper.
//
// The onWrite attribute is a callback that will be called every time the data
// is written, with the number of bytes that were written.
func NewRespWriterWrapper(w http.ResponseWriter, onWrite func(int64)) *RespWriterWrapper {
return &RespWriterWrapper{
ResponseWriter: w,
OnWrite: onWrite,
statusCode: http.StatusOK, // default status code in case the Handler doesn't write anything
}
}
// Write writes the bytes array into the [ResponseWriter], and tracks the
// number of bytes written and last error.
func (w *RespWriterWrapper) Write(p []byte) (int, error) {
w.mu.Lock()
defer w.mu.Unlock()
if !w.wroteHeader {
w.writeHeader(http.StatusOK)
}
n, err := w.ResponseWriter.Write(p)
n1 := int64(n)
w.OnWrite(n1)
w.written += n1
w.err = err
return n, err
}
// WriteHeader persists initial statusCode for span attribution.
// All calls to WriteHeader will be propagated to the underlying ResponseWriter
// and will persist the statusCode from the first call.
// Blocking consecutive calls to WriteHeader alters expected behavior and will
// remove warning logs from net/http where developers will notice incorrect handler implementations.
func (w *RespWriterWrapper) WriteHeader(statusCode int) {
w.mu.Lock()
defer w.mu.Unlock()
w.writeHeader(statusCode)
}
// writeHeader persists the status code for span attribution, and propagates
// the call to the underlying ResponseWriter.
// It does not acquire a lock, and therefore assumes that is being handled by a
// parent method.
func (w *RespWriterWrapper) writeHeader(statusCode int) {
if !w.wroteHeader {
w.wroteHeader = true
w.statusCode = statusCode
}
w.ResponseWriter.WriteHeader(statusCode)
}
// Flush implements [http.Flusher].
func (w *RespWriterWrapper) Flush() {
w.mu.Lock()
defer w.mu.Unlock()
if !w.wroteHeader {
w.writeHeader(http.StatusOK)
}
if f, ok := w.ResponseWriter.(http.Flusher); ok {
f.Flush()
}
}
// BytesWritten returns the number of bytes written.
func (w *RespWriterWrapper) BytesWritten() int64 {
w.mu.RLock()
defer w.mu.RUnlock()
return w.written
}
// StatusCode returns the HTTP status code that was sent.
func (w *RespWriterWrapper) StatusCode() int {
w.mu.RLock()
defer w.mu.RUnlock()
return w.statusCode
}
// Error returns the last error.
func (w *RespWriterWrapper) Error() error {
w.mu.RLock()
defer w.mu.RUnlock()
return w.err
}

248
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv/env.go generated vendored Normal file
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@@ -0,0 +1,248 @@
// Code generated by gotmpl. DO NOT MODIFY.
// source: internal/shared/semconv/env.go.tmpl
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv"
import (
"context"
"fmt"
"net/http"
"strings"
"sync"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/semconv/v1.37.0/httpconv"
)
// OTelSemConvStabilityOptIn is an environment variable.
// That can be set to "http/dup" to keep getting the old HTTP semantic conventions.
const OTelSemConvStabilityOptIn = "OTEL_SEMCONV_STABILITY_OPT_IN"
type ResponseTelemetry struct {
StatusCode int
ReadBytes int64
ReadError error
WriteBytes int64
WriteError error
}
type HTTPServer struct {
requestBodySizeHistogram httpconv.ServerRequestBodySize
responseBodySizeHistogram httpconv.ServerResponseBodySize
requestDurationHistogram httpconv.ServerRequestDuration
}
// RequestTraceAttrs returns trace attributes for an HTTP request received by a
// server.
//
// The server must be the primary server name if it is known. For example this
// would be the ServerName directive
// (https://httpd.apache.org/docs/2.4/mod/core.html#servername) for an Apache
// server, and the server_name directive
// (http://nginx.org/en/docs/http/ngx_http_core_module.html#server_name) for an
// nginx server. More generically, the primary server name would be the host
// header value that matches the default virtual host of an HTTP server. It
// should include the host identifier and if a port is used to route to the
// server that port identifier should be included as an appropriate port
// suffix.
//
// If the primary server name is not known, server should be an empty string.
// The req Host will be used to determine the server instead.
func (s HTTPServer) RequestTraceAttrs(server string, req *http.Request, opts RequestTraceAttrsOpts) []attribute.KeyValue {
return CurrentHTTPServer{}.RequestTraceAttrs(server, req, opts)
}
func (s HTTPServer) NetworkTransportAttr(network string) []attribute.KeyValue {
return []attribute.KeyValue{
CurrentHTTPServer{}.NetworkTransportAttr(network),
}
}
// ResponseTraceAttrs returns trace attributes for telemetry from an HTTP response.
//
// If any of the fields in the ResponseTelemetry are not set the attribute will be omitted.
func (s HTTPServer) ResponseTraceAttrs(resp ResponseTelemetry) []attribute.KeyValue {
return CurrentHTTPServer{}.ResponseTraceAttrs(resp)
}
// Route returns the attribute for the route.
func (s HTTPServer) Route(route string) attribute.KeyValue {
return CurrentHTTPServer{}.Route(route)
}
// Status returns a span status code and message for an HTTP status code
// value returned by a server. Status codes in the 400-499 range are not
// returned as errors.
func (s HTTPServer) Status(code int) (codes.Code, string) {
if code < 100 || code >= 600 {
return codes.Error, fmt.Sprintf("Invalid HTTP status code %d", code)
}
if code >= 500 {
return codes.Error, ""
}
return codes.Unset, ""
}
type ServerMetricData struct {
ServerName string
ResponseSize int64
MetricData
MetricAttributes
}
type MetricAttributes struct {
Req *http.Request
StatusCode int
AdditionalAttributes []attribute.KeyValue
}
type MetricData struct {
RequestSize int64
// The request duration, in milliseconds
ElapsedTime float64
}
var (
metricAddOptionPool = &sync.Pool{
New: func() any {
return &[]metric.AddOption{}
},
}
metricRecordOptionPool = &sync.Pool{
New: func() any {
return &[]metric.RecordOption{}
},
}
)
func (s HTTPServer) RecordMetrics(ctx context.Context, md ServerMetricData) {
attributes := CurrentHTTPServer{}.MetricAttributes(md.ServerName, md.Req, md.StatusCode, md.AdditionalAttributes)
o := metric.WithAttributeSet(attribute.NewSet(attributes...))
recordOpts := metricRecordOptionPool.Get().(*[]metric.RecordOption)
*recordOpts = append(*recordOpts, o)
s.requestBodySizeHistogram.Inst().Record(ctx, md.RequestSize, *recordOpts...)
s.responseBodySizeHistogram.Inst().Record(ctx, md.ResponseSize, *recordOpts...)
s.requestDurationHistogram.Inst().Record(ctx, md.ElapsedTime/1000.0, o)
*recordOpts = (*recordOpts)[:0]
metricRecordOptionPool.Put(recordOpts)
}
// hasOptIn returns true if the comma-separated version string contains the
// exact optIn value.
func hasOptIn(version, optIn string) bool {
for _, v := range strings.Split(version, ",") {
if strings.TrimSpace(v) == optIn {
return true
}
}
return false
}
func NewHTTPServer(meter metric.Meter) HTTPServer {
server := HTTPServer{}
var err error
server.requestBodySizeHistogram, err = httpconv.NewServerRequestBodySize(meter)
handleErr(err)
server.responseBodySizeHistogram, err = httpconv.NewServerResponseBodySize(meter)
handleErr(err)
server.requestDurationHistogram, err = httpconv.NewServerRequestDuration(
meter,
metric.WithExplicitBucketBoundaries(
0.005, 0.01, 0.025, 0.05, 0.075, 0.1,
0.25, 0.5, 0.75, 1, 2.5, 5, 7.5, 10,
),
)
handleErr(err)
return server
}
type HTTPClient struct {
requestBodySize httpconv.ClientRequestBodySize
requestDuration httpconv.ClientRequestDuration
}
func NewHTTPClient(meter metric.Meter) HTTPClient {
client := HTTPClient{}
var err error
client.requestBodySize, err = httpconv.NewClientRequestBodySize(meter)
handleErr(err)
client.requestDuration, err = httpconv.NewClientRequestDuration(
meter,
metric.WithExplicitBucketBoundaries(0.005, 0.01, 0.025, 0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1, 2.5, 5, 7.5, 10),
)
handleErr(err)
return client
}
// RequestTraceAttrs returns attributes for an HTTP request made by a client.
func (c HTTPClient) RequestTraceAttrs(req *http.Request) []attribute.KeyValue {
return CurrentHTTPClient{}.RequestTraceAttrs(req)
}
// ResponseTraceAttrs returns metric attributes for an HTTP request made by a client.
func (c HTTPClient) ResponseTraceAttrs(resp *http.Response) []attribute.KeyValue {
return CurrentHTTPClient{}.ResponseTraceAttrs(resp)
}
func (c HTTPClient) Status(code int) (codes.Code, string) {
if code < 100 || code >= 600 {
return codes.Error, fmt.Sprintf("Invalid HTTP status code %d", code)
}
if code >= 400 {
return codes.Error, ""
}
return codes.Unset, ""
}
func (c HTTPClient) ErrorType(err error) attribute.KeyValue {
return CurrentHTTPClient{}.ErrorType(err)
}
type MetricOpts struct {
measurement metric.MeasurementOption
addOptions metric.AddOption
}
func (o MetricOpts) MeasurementOption() metric.MeasurementOption {
return o.measurement
}
func (o MetricOpts) AddOptions() metric.AddOption {
return o.addOptions
}
func (c HTTPClient) MetricOptions(ma MetricAttributes) map[string]MetricOpts {
opts := map[string]MetricOpts{}
attributes := CurrentHTTPClient{}.MetricAttributes(ma.Req, ma.StatusCode, ma.AdditionalAttributes)
set := metric.WithAttributeSet(attribute.NewSet(attributes...))
opts["new"] = MetricOpts{
measurement: set,
addOptions: set,
}
return opts
}
func (s HTTPClient) RecordMetrics(ctx context.Context, md MetricData, opts map[string]MetricOpts) {
s.requestBodySize.Inst().Record(ctx, md.RequestSize, opts["new"].MeasurementOption())
s.requestDuration.Inst().Record(ctx, md.ElapsedTime/1000, opts["new"].MeasurementOption())
}
func (s HTTPClient) TraceAttributes(host string) []attribute.KeyValue {
return CurrentHTTPClient{}.TraceAttributes(host)
}

15
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv/gen.go generated vendored Normal file
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@@ -0,0 +1,15 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv"
// Generate semconv package:
//go:generate gotmpl --body=../../../../../../internal/shared/semconv/bench_test.go.tmpl "--data={ \"pkg\": \"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp\" }" --out=bench_test.go
//go:generate gotmpl --body=../../../../../../internal/shared/semconv/common_test.go.tmpl "--data={ \"pkg\": \"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp\" }" --out=common_test.go
//go:generate gotmpl --body=../../../../../../internal/shared/semconv/env.go.tmpl "--data={ \"pkg\": \"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp\" }" --out=env.go
//go:generate gotmpl --body=../../../../../../internal/shared/semconv/env_test.go.tmpl "--data={ \"pkg\": \"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp\" }" --out=env_test.go
//go:generate gotmpl --body=../../../../../../internal/shared/semconv/httpconv.go.tmpl "--data={ \"pkg\": \"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp\" }" --out=httpconv.go
//go:generate gotmpl --body=../../../../../../internal/shared/semconv/httpconv_test.go.tmpl "--data={ \"pkg\": \"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp\" }" --out=httpconv_test.go
//go:generate gotmpl --body=../../../../../../internal/shared/semconv/httpconvtest_test.go.tmpl "--data={ \"pkg\": \"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp\" }" --out=httpconvtest_test.go
//go:generate gotmpl --body=../../../../../../internal/shared/semconv/util.go.tmpl "--data={ \"pkg\": \"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp\" }" --out=util.go
//go:generate gotmpl --body=../../../../../../internal/shared/semconv/util_test.go.tmpl "--data={ \"pkg\": \"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp\" }" --out=util_test.go

517
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv/httpconv.go generated vendored Normal file
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@@ -0,0 +1,517 @@
// Code generated by gotmpl. DO NOT MODIFY.
// source: internal/shared/semconv/httpconv.go.tmpl
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package semconv provides OpenTelemetry semantic convention types and
// functionality.
package semconv // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv"
import (
"fmt"
"net/http"
"reflect"
"slices"
"strconv"
"strings"
"go.opentelemetry.io/otel/attribute"
semconvNew "go.opentelemetry.io/otel/semconv/v1.37.0"
)
type RequestTraceAttrsOpts struct {
// If set, this is used as value for the "http.client_ip" attribute.
HTTPClientIP string
}
type CurrentHTTPServer struct{}
// RequestTraceAttrs returns trace attributes for an HTTP request received by a
// server.
//
// The server must be the primary server name if it is known. For example this
// would be the ServerName directive
// (https://httpd.apache.org/docs/2.4/mod/core.html#servername) for an Apache
// server, and the server_name directive
// (http://nginx.org/en/docs/http/ngx_http_core_module.html#server_name) for an
// nginx server. More generically, the primary server name would be the host
// header value that matches the default virtual host of an HTTP server. It
// should include the host identifier and if a port is used to route to the
// server that port identifier should be included as an appropriate port
// suffix.
//
// If the primary server name is not known, server should be an empty string.
// The req Host will be used to determine the server instead.
func (n CurrentHTTPServer) RequestTraceAttrs(server string, req *http.Request, opts RequestTraceAttrsOpts) []attribute.KeyValue {
count := 3 // ServerAddress, Method, Scheme
var host string
var p int
if server == "" {
host, p = SplitHostPort(req.Host)
} else {
// Prioritize the primary server name.
host, p = SplitHostPort(server)
if p < 0 {
_, p = SplitHostPort(req.Host)
}
}
hostPort := requiredHTTPPort(req.TLS != nil, p)
if hostPort > 0 {
count++
}
method, methodOriginal := n.method(req.Method)
if methodOriginal != (attribute.KeyValue{}) {
count++
}
scheme := n.scheme(req.TLS != nil)
peer, peerPort := SplitHostPort(req.RemoteAddr)
if peer != "" {
// The Go HTTP server sets RemoteAddr to "IP:port", this will not be a
// file-path that would be interpreted with a sock family.
count++
if peerPort > 0 {
count++
}
}
useragent := req.UserAgent()
if useragent != "" {
count++
}
// For client IP, use, in order:
// 1. The value passed in the options
// 2. The value in the X-Forwarded-For header
// 3. The peer address
clientIP := opts.HTTPClientIP
if clientIP == "" {
clientIP = serverClientIP(req.Header.Get("X-Forwarded-For"))
if clientIP == "" {
clientIP = peer
}
}
if clientIP != "" {
count++
}
if req.URL != nil && req.URL.Path != "" {
count++
}
protoName, protoVersion := netProtocol(req.Proto)
if protoName != "" && protoName != "http" {
count++
}
if protoVersion != "" {
count++
}
route := httpRoute(req.Pattern)
if route != "" {
count++
}
attrs := make([]attribute.KeyValue, 0, count)
attrs = append(attrs,
semconvNew.ServerAddress(host),
method,
scheme,
)
if hostPort > 0 {
attrs = append(attrs, semconvNew.ServerPort(hostPort))
}
if methodOriginal != (attribute.KeyValue{}) {
attrs = append(attrs, methodOriginal)
}
if peer, peerPort := SplitHostPort(req.RemoteAddr); peer != "" {
// The Go HTTP server sets RemoteAddr to "IP:port", this will not be a
// file-path that would be interpreted with a sock family.
attrs = append(attrs, semconvNew.NetworkPeerAddress(peer))
if peerPort > 0 {
attrs = append(attrs, semconvNew.NetworkPeerPort(peerPort))
}
}
if useragent != "" {
attrs = append(attrs, semconvNew.UserAgentOriginal(useragent))
}
if clientIP != "" {
attrs = append(attrs, semconvNew.ClientAddress(clientIP))
}
if req.URL != nil && req.URL.Path != "" {
attrs = append(attrs, semconvNew.URLPath(req.URL.Path))
}
if protoName != "" && protoName != "http" {
attrs = append(attrs, semconvNew.NetworkProtocolName(protoName))
}
if protoVersion != "" {
attrs = append(attrs, semconvNew.NetworkProtocolVersion(protoVersion))
}
if route != "" {
attrs = append(attrs, n.Route(route))
}
return attrs
}
func (n CurrentHTTPServer) NetworkTransportAttr(network string) attribute.KeyValue {
switch network {
case "tcp", "tcp4", "tcp6":
return semconvNew.NetworkTransportTCP
case "udp", "udp4", "udp6":
return semconvNew.NetworkTransportUDP
case "unix", "unixgram", "unixpacket":
return semconvNew.NetworkTransportUnix
default:
return semconvNew.NetworkTransportPipe
}
}
func (n CurrentHTTPServer) method(method string) (attribute.KeyValue, attribute.KeyValue) {
if method == "" {
return semconvNew.HTTPRequestMethodGet, attribute.KeyValue{}
}
if attr, ok := methodLookup[method]; ok {
return attr, attribute.KeyValue{}
}
orig := semconvNew.HTTPRequestMethodOriginal(method)
if attr, ok := methodLookup[strings.ToUpper(method)]; ok {
return attr, orig
}
return semconvNew.HTTPRequestMethodGet, orig
}
func (n CurrentHTTPServer) scheme(https bool) attribute.KeyValue { //nolint:revive // ignore linter
if https {
return semconvNew.URLScheme("https")
}
return semconvNew.URLScheme("http")
}
// ResponseTraceAttrs returns trace attributes for telemetry from an HTTP
// response.
//
// If any of the fields in the ResponseTelemetry are not set the attribute will
// be omitted.
func (n CurrentHTTPServer) ResponseTraceAttrs(resp ResponseTelemetry) []attribute.KeyValue {
var count int
if resp.ReadBytes > 0 {
count++
}
if resp.WriteBytes > 0 {
count++
}
if resp.StatusCode > 0 {
count++
}
attributes := make([]attribute.KeyValue, 0, count)
if resp.ReadBytes > 0 {
attributes = append(attributes,
semconvNew.HTTPRequestBodySize(int(resp.ReadBytes)),
)
}
if resp.WriteBytes > 0 {
attributes = append(attributes,
semconvNew.HTTPResponseBodySize(int(resp.WriteBytes)),
)
}
if resp.StatusCode > 0 {
attributes = append(attributes,
semconvNew.HTTPResponseStatusCode(resp.StatusCode),
)
}
return attributes
}
// Route returns the attribute for the route.
func (n CurrentHTTPServer) Route(route string) attribute.KeyValue {
return semconvNew.HTTPRoute(route)
}
func (n CurrentHTTPServer) MetricAttributes(server string, req *http.Request, statusCode int, additionalAttributes []attribute.KeyValue) []attribute.KeyValue {
num := len(additionalAttributes) + 3
var host string
var p int
if server == "" {
host, p = SplitHostPort(req.Host)
} else {
// Prioritize the primary server name.
host, p = SplitHostPort(server)
if p < 0 {
_, p = SplitHostPort(req.Host)
}
}
hostPort := requiredHTTPPort(req.TLS != nil, p)
if hostPort > 0 {
num++
}
protoName, protoVersion := netProtocol(req.Proto)
if protoName != "" {
num++
}
if protoVersion != "" {
num++
}
if statusCode > 0 {
num++
}
attributes := slices.Grow(additionalAttributes, num)
attributes = append(attributes,
semconvNew.HTTPRequestMethodKey.String(standardizeHTTPMethod(req.Method)),
n.scheme(req.TLS != nil),
semconvNew.ServerAddress(host))
if hostPort > 0 {
attributes = append(attributes, semconvNew.ServerPort(hostPort))
}
if protoName != "" {
attributes = append(attributes, semconvNew.NetworkProtocolName(protoName))
}
if protoVersion != "" {
attributes = append(attributes, semconvNew.NetworkProtocolVersion(protoVersion))
}
if statusCode > 0 {
attributes = append(attributes, semconvNew.HTTPResponseStatusCode(statusCode))
}
return attributes
}
type CurrentHTTPClient struct{}
// RequestTraceAttrs returns trace attributes for an HTTP request made by a client.
func (n CurrentHTTPClient) RequestTraceAttrs(req *http.Request) []attribute.KeyValue {
/*
below attributes are returned:
- http.request.method
- http.request.method.original
- url.full
- server.address
- server.port
- network.protocol.name
- network.protocol.version
*/
numOfAttributes := 3 // URL, server address, proto, and method.
var urlHost string
if req.URL != nil {
urlHost = req.URL.Host
}
var requestHost string
var requestPort int
for _, hostport := range []string{urlHost, req.Header.Get("Host")} {
requestHost, requestPort = SplitHostPort(hostport)
if requestHost != "" || requestPort > 0 {
break
}
}
eligiblePort := requiredHTTPPort(req.URL != nil && req.URL.Scheme == "https", requestPort)
if eligiblePort > 0 {
numOfAttributes++
}
useragent := req.UserAgent()
if useragent != "" {
numOfAttributes++
}
protoName, protoVersion := netProtocol(req.Proto)
if protoName != "" && protoName != "http" {
numOfAttributes++
}
if protoVersion != "" {
numOfAttributes++
}
method, originalMethod := n.method(req.Method)
if originalMethod != (attribute.KeyValue{}) {
numOfAttributes++
}
attrs := make([]attribute.KeyValue, 0, numOfAttributes)
attrs = append(attrs, method)
if originalMethod != (attribute.KeyValue{}) {
attrs = append(attrs, originalMethod)
}
var u string
if req.URL != nil {
// Remove any username/password info that may be in the URL.
userinfo := req.URL.User
req.URL.User = nil
u = req.URL.String()
// Restore any username/password info that was removed.
req.URL.User = userinfo
}
attrs = append(attrs, semconvNew.URLFull(u))
attrs = append(attrs, semconvNew.ServerAddress(requestHost))
if eligiblePort > 0 {
attrs = append(attrs, semconvNew.ServerPort(eligiblePort))
}
if protoName != "" && protoName != "http" {
attrs = append(attrs, semconvNew.NetworkProtocolName(protoName))
}
if protoVersion != "" {
attrs = append(attrs, semconvNew.NetworkProtocolVersion(protoVersion))
}
return attrs
}
// ResponseTraceAttrs returns trace attributes for an HTTP response made by a client.
func (n CurrentHTTPClient) ResponseTraceAttrs(resp *http.Response) []attribute.KeyValue {
/*
below attributes are returned:
- http.response.status_code
- error.type
*/
var count int
if resp.StatusCode > 0 {
count++
}
if isErrorStatusCode(resp.StatusCode) {
count++
}
attrs := make([]attribute.KeyValue, 0, count)
if resp.StatusCode > 0 {
attrs = append(attrs, semconvNew.HTTPResponseStatusCode(resp.StatusCode))
}
if isErrorStatusCode(resp.StatusCode) {
errorType := strconv.Itoa(resp.StatusCode)
attrs = append(attrs, semconvNew.ErrorTypeKey.String(errorType))
}
return attrs
}
func (n CurrentHTTPClient) ErrorType(err error) attribute.KeyValue {
t := reflect.TypeOf(err)
var value string
if t.PkgPath() == "" && t.Name() == "" {
// Likely a builtin type.
value = t.String()
} else {
value = fmt.Sprintf("%s.%s", t.PkgPath(), t.Name())
}
if value == "" {
return semconvNew.ErrorTypeOther
}
return semconvNew.ErrorTypeKey.String(value)
}
func (n CurrentHTTPClient) method(method string) (attribute.KeyValue, attribute.KeyValue) {
if method == "" {
return semconvNew.HTTPRequestMethodGet, attribute.KeyValue{}
}
if attr, ok := methodLookup[method]; ok {
return attr, attribute.KeyValue{}
}
orig := semconvNew.HTTPRequestMethodOriginal(method)
if attr, ok := methodLookup[strings.ToUpper(method)]; ok {
return attr, orig
}
return semconvNew.HTTPRequestMethodGet, orig
}
func (n CurrentHTTPClient) MetricAttributes(req *http.Request, statusCode int, additionalAttributes []attribute.KeyValue) []attribute.KeyValue {
num := len(additionalAttributes) + 2
var h string
if req.URL != nil {
h = req.URL.Host
}
var requestHost string
var requestPort int
for _, hostport := range []string{h, req.Header.Get("Host")} {
requestHost, requestPort = SplitHostPort(hostport)
if requestHost != "" || requestPort > 0 {
break
}
}
port := requiredHTTPPort(req.URL != nil && req.URL.Scheme == "https", requestPort)
if port > 0 {
num++
}
protoName, protoVersion := netProtocol(req.Proto)
if protoName != "" {
num++
}
if protoVersion != "" {
num++
}
if statusCode > 0 {
num++
}
attributes := slices.Grow(additionalAttributes, num)
attributes = append(attributes,
semconvNew.HTTPRequestMethodKey.String(standardizeHTTPMethod(req.Method)),
semconvNew.ServerAddress(requestHost),
n.scheme(req),
)
if port > 0 {
attributes = append(attributes, semconvNew.ServerPort(port))
}
if protoName != "" {
attributes = append(attributes, semconvNew.NetworkProtocolName(protoName))
}
if protoVersion != "" {
attributes = append(attributes, semconvNew.NetworkProtocolVersion(protoVersion))
}
if statusCode > 0 {
attributes = append(attributes, semconvNew.HTTPResponseStatusCode(statusCode))
}
return attributes
}
// TraceAttributes returns attributes for httptrace.
func (n CurrentHTTPClient) TraceAttributes(host string) []attribute.KeyValue {
return []attribute.KeyValue{
semconvNew.ServerAddress(host),
}
}
func (n CurrentHTTPClient) scheme(req *http.Request) attribute.KeyValue {
if req.URL != nil && req.URL.Scheme != "" {
return semconvNew.URLScheme(req.URL.Scheme)
}
if req.TLS != nil {
return semconvNew.URLScheme("https")
}
return semconvNew.URLScheme("http")
}
func isErrorStatusCode(code int) bool {
return code >= 400 || code < 100
}

127
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv/util.go generated vendored Normal file
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// Code generated by gotmpl. DO NOT MODIFY.
// source: internal/shared/semconv/util.go.tmpl
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv"
import (
"net"
"net/http"
"strconv"
"strings"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
semconvNew "go.opentelemetry.io/otel/semconv/v1.37.0"
)
// SplitHostPort splits a network address hostport of the form "host",
// "host%zone", "[host]", "[host%zone], "host:port", "host%zone:port",
// "[host]:port", "[host%zone]:port", or ":port" into host or host%zone and
// port.
//
// An empty host is returned if it is not provided or unparsable. A negative
// port is returned if it is not provided or unparsable.
func SplitHostPort(hostport string) (host string, port int) {
port = -1
if strings.HasPrefix(hostport, "[") {
addrEnd := strings.LastIndexByte(hostport, ']')
if addrEnd < 0 {
// Invalid hostport.
return
}
if i := strings.LastIndexByte(hostport[addrEnd:], ':'); i < 0 {
host = hostport[1:addrEnd]
return
}
} else {
if i := strings.LastIndexByte(hostport, ':'); i < 0 {
host = hostport
return
}
}
host, pStr, err := net.SplitHostPort(hostport)
if err != nil {
return
}
p, err := strconv.ParseUint(pStr, 10, 16)
if err != nil {
return
}
return host, int(p) //nolint:gosec // Byte size checked 16 above.
}
func requiredHTTPPort(https bool, port int) int { //nolint:revive // ignore linter
if https {
if port > 0 && port != 443 {
return port
}
} else {
if port > 0 && port != 80 {
return port
}
}
return -1
}
func serverClientIP(xForwardedFor string) string {
if idx := strings.IndexByte(xForwardedFor, ','); idx >= 0 {
xForwardedFor = xForwardedFor[:idx]
}
return xForwardedFor
}
func httpRoute(pattern string) string {
if idx := strings.IndexByte(pattern, '/'); idx >= 0 {
return pattern[idx:]
}
return ""
}
func netProtocol(proto string) (name string, version string) {
name, version, _ = strings.Cut(proto, "/")
switch name {
case "HTTP":
name = "http"
case "QUIC":
name = "quic"
case "SPDY":
name = "spdy"
default:
name = strings.ToLower(name)
}
return name, version
}
var methodLookup = map[string]attribute.KeyValue{
http.MethodConnect: semconvNew.HTTPRequestMethodConnect,
http.MethodDelete: semconvNew.HTTPRequestMethodDelete,
http.MethodGet: semconvNew.HTTPRequestMethodGet,
http.MethodHead: semconvNew.HTTPRequestMethodHead,
http.MethodOptions: semconvNew.HTTPRequestMethodOptions,
http.MethodPatch: semconvNew.HTTPRequestMethodPatch,
http.MethodPost: semconvNew.HTTPRequestMethodPost,
http.MethodPut: semconvNew.HTTPRequestMethodPut,
http.MethodTrace: semconvNew.HTTPRequestMethodTrace,
}
func handleErr(err error) {
if err != nil {
otel.Handle(err)
}
}
func standardizeHTTPMethod(method string) string {
method = strings.ToUpper(method)
switch method {
case http.MethodConnect, http.MethodDelete, http.MethodGet, http.MethodHead, http.MethodOptions, http.MethodPatch, http.MethodPost, http.MethodPut, http.MethodTrace:
default:
method = "_OTHER"
}
return method
}

58
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/labeler.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
import (
"context"
"sync"
"go.opentelemetry.io/otel/attribute"
)
// Labeler is used to allow instrumented HTTP handlers to add custom attributes to
// the metrics recorded by the net/http instrumentation.
type Labeler struct {
mu sync.Mutex
attributes []attribute.KeyValue
}
// Add attributes to a Labeler.
func (l *Labeler) Add(ls ...attribute.KeyValue) {
l.mu.Lock()
defer l.mu.Unlock()
l.attributes = append(l.attributes, ls...)
}
// Get returns a copy of the attributes added to the Labeler.
func (l *Labeler) Get() []attribute.KeyValue {
l.mu.Lock()
defer l.mu.Unlock()
ret := make([]attribute.KeyValue, len(l.attributes))
copy(ret, l.attributes)
return ret
}
type labelerContextKeyType int
const labelerContextKey labelerContextKeyType = 0
// ContextWithLabeler returns a new context with the provided Labeler instance.
// Attributes added to the specified labeler will be injected into metrics
// emitted by the instrumentation. Only one labeller can be injected into the
// context. Injecting it multiple times will override the previous calls.
func ContextWithLabeler(parent context.Context, l *Labeler) context.Context {
return context.WithValue(parent, labelerContextKey, l)
}
// LabelerFromContext retrieves a Labeler instance from the provided context if
// one is available. If no Labeler was found in the provided context a new, empty
// Labeler is returned and the second return value is false. In this case it is
// safe to use the Labeler but any attributes added to it will not be used.
func LabelerFromContext(ctx context.Context) (*Labeler, bool) {
l, ok := ctx.Value(labelerContextKey).(*Labeler)
if !ok {
l = &Labeler{}
}
return l, ok
}

29
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/start_time_context.go generated vendored Normal file
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@@ -0,0 +1,29 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
import (
"context"
"time"
)
type startTimeContextKeyType int
const startTimeContextKey startTimeContextKeyType = 0
// ContextWithStartTime returns a new context with the provided start time. The
// start time will be used for metrics and traces emitted by the
// instrumentation. Only one labeller can be injected into the context.
// Injecting it multiple times will override the previous calls.
func ContextWithStartTime(parent context.Context, start time.Time) context.Context {
return context.WithValue(parent, startTimeContextKey, start)
}
// StartTimeFromContext retrieves a time.Time from the provided context if one
// is available. If no start time was found in the provided context, a new,
// zero start time is returned and the second return value is false.
func StartTimeFromContext(ctx context.Context) time.Time {
t, _ := ctx.Value(startTimeContextKey).(time.Time)
return t
}

275
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/transport.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
import (
"context"
"io"
"net/http"
"net/http/httptrace"
"sync/atomic"
"time"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/request"
"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv"
)
// Transport implements the http.RoundTripper interface and wraps
// outbound HTTP(S) requests with a span and enriches it with metrics.
type Transport struct {
rt http.RoundTripper
tracer trace.Tracer
propagators propagation.TextMapPropagator
spanStartOptions []trace.SpanStartOption
filters []Filter
spanNameFormatter func(string, *http.Request) string
clientTrace func(context.Context) *httptrace.ClientTrace
metricAttributesFn func(*http.Request) []attribute.KeyValue
semconv semconv.HTTPClient
}
var _ http.RoundTripper = &Transport{}
// NewTransport wraps the provided http.RoundTripper with one that
// starts a span, injects the span context into the outbound request headers,
// and enriches it with metrics.
//
// If the provided http.RoundTripper is nil, http.DefaultTransport will be used
// as the base http.RoundTripper.
func NewTransport(base http.RoundTripper, opts ...Option) *Transport {
if base == nil {
base = http.DefaultTransport
}
t := Transport{
rt: base,
}
defaultOpts := []Option{
WithSpanOptions(trace.WithSpanKind(trace.SpanKindClient)),
WithSpanNameFormatter(defaultTransportFormatter),
}
c := newConfig(append(defaultOpts, opts...)...)
t.applyConfig(c)
return &t
}
func (t *Transport) applyConfig(c *config) {
t.tracer = c.Tracer
t.propagators = c.Propagators
t.spanStartOptions = c.SpanStartOptions
t.filters = c.Filters
t.spanNameFormatter = c.SpanNameFormatter
t.clientTrace = c.ClientTrace
t.semconv = semconv.NewHTTPClient(c.Meter)
t.metricAttributesFn = c.MetricAttributesFn
}
func defaultTransportFormatter(_ string, r *http.Request) string {
return "HTTP " + r.Method
}
// RoundTrip creates a Span and propagates its context via the provided request's headers
// before handing the request to the configured base RoundTripper. The created span will
// end when the response body is closed or when a read from the body returns io.EOF.
func (t *Transport) RoundTrip(r *http.Request) (*http.Response, error) {
requestStartTime := time.Now()
for _, f := range t.filters {
if !f(r) {
// Simply pass through to the base RoundTripper if a filter rejects the request
return t.rt.RoundTrip(r)
}
}
tracer := t.tracer
if tracer == nil {
if span := trace.SpanFromContext(r.Context()); span.SpanContext().IsValid() {
tracer = newTracer(span.TracerProvider())
} else {
tracer = newTracer(otel.GetTracerProvider())
}
}
opts := append([]trace.SpanStartOption{}, t.spanStartOptions...) // start with the configured options
ctx, span := tracer.Start(r.Context(), t.spanNameFormatter("", r), opts...)
if t.clientTrace != nil {
ctx = httptrace.WithClientTrace(ctx, t.clientTrace(ctx))
}
labeler, found := LabelerFromContext(ctx)
if !found {
ctx = ContextWithLabeler(ctx, labeler)
}
r = r.Clone(ctx) // According to RoundTripper spec, we shouldn't modify the origin request.
// if request body is nil or NoBody, we don't want to mutate the body as it
// will affect the identity of it in an unforeseeable way because we assert
// ReadCloser fulfills a certain interface and it is indeed nil or NoBody.
bw := request.NewBodyWrapper(r.Body, func(int64) {})
if r.Body != nil && r.Body != http.NoBody {
r.Body = bw
}
span.SetAttributes(t.semconv.RequestTraceAttrs(r)...)
t.propagators.Inject(ctx, propagation.HeaderCarrier(r.Header))
res, err := t.rt.RoundTrip(r)
// Defer metrics recording function to record the metrics on error or no error.
defer func() {
metricAttributes := semconv.MetricAttributes{
Req: r,
AdditionalAttributes: append(labeler.Get(), t.metricAttributesFromRequest(r)...),
}
if err == nil {
metricAttributes.StatusCode = res.StatusCode
}
metricOpts := t.semconv.MetricOptions(metricAttributes)
metricData := semconv.MetricData{
RequestSize: bw.BytesRead(),
}
if err == nil {
readRecordFunc := func(int64) {}
res.Body = newWrappedBody(span, readRecordFunc, res.Body)
}
// Use floating point division here for higher precision (instead of Millisecond method).
elapsedTime := float64(time.Since(requestStartTime)) / float64(time.Millisecond)
metricData.ElapsedTime = elapsedTime
t.semconv.RecordMetrics(ctx, metricData, metricOpts)
}()
if err != nil {
// set error type attribute if the error is part of the predefined
// error types.
// otherwise, record it as an exception
if errType := t.semconv.ErrorType(err); errType.Valid() {
span.SetAttributes(errType)
} else {
span.RecordError(err)
}
span.SetStatus(codes.Error, err.Error())
span.End()
return res, err
}
// traces
span.SetAttributes(t.semconv.ResponseTraceAttrs(res)...)
span.SetStatus(t.semconv.Status(res.StatusCode))
return res, nil
}
func (t *Transport) metricAttributesFromRequest(r *http.Request) []attribute.KeyValue {
var attributeForRequest []attribute.KeyValue
if t.metricAttributesFn != nil {
attributeForRequest = t.metricAttributesFn(r)
}
return attributeForRequest
}
// newWrappedBody returns a new and appropriately scoped *wrappedBody as an
// io.ReadCloser. If the passed body implements io.Writer, the returned value
// will implement io.ReadWriteCloser.
func newWrappedBody(span trace.Span, record func(n int64), body io.ReadCloser) io.ReadCloser {
// The successful protocol switch responses will have a body that
// implement an io.ReadWriteCloser. Ensure this interface type continues
// to be satisfied if that is the case.
if _, ok := body.(io.ReadWriteCloser); ok {
return &wrappedBody{span: span, record: record, body: body}
}
// Remove the implementation of the io.ReadWriteCloser and only implement
// the io.ReadCloser.
return struct{ io.ReadCloser }{&wrappedBody{span: span, record: record, body: body}}
}
// wrappedBody is the response body type returned by the transport
// instrumentation to complete a span. Errors encountered when using the
// response body are recorded in span tracking the response.
//
// The span tracking the response is ended when this body is closed.
//
// If the response body implements the io.Writer interface (i.e. for
// successful protocol switches), the wrapped body also will.
type wrappedBody struct {
span trace.Span
recorded atomic.Bool
record func(n int64)
body io.ReadCloser
read atomic.Int64
}
var _ io.ReadWriteCloser = &wrappedBody{}
func (wb *wrappedBody) Write(p []byte) (int, error) {
// This will not panic given the guard in newWrappedBody.
n, err := wb.body.(io.Writer).Write(p)
if err != nil {
wb.span.RecordError(err)
wb.span.SetStatus(codes.Error, err.Error())
}
return n, err
}
func (wb *wrappedBody) Read(b []byte) (int, error) {
n, err := wb.body.Read(b)
// Record the number of bytes read
wb.read.Add(int64(n))
switch err {
case nil:
// nothing to do here but fall through to the return
case io.EOF:
wb.recordBytesRead()
wb.span.End()
default:
wb.span.RecordError(err)
wb.span.SetStatus(codes.Error, err.Error())
}
return n, err
}
// recordBytesRead is a function that ensures the number of bytes read is recorded once and only once.
func (wb *wrappedBody) recordBytesRead() {
// note: it is more performant (and equally correct) to use atomic.Bool over sync.Once here. In the event that
// two goroutines are racing to call this method, the number of bytes read will no longer increase. Using
// CompareAndSwap allows later goroutines to return quickly and not block waiting for the race winner to finish
// calling wb.record(wb.read.Load()).
if wb.recorded.CompareAndSwap(false, true) {
// Record the total number of bytes read
wb.record(wb.read.Load())
}
}
func (wb *wrappedBody) Close() error {
wb.recordBytesRead()
wb.span.End()
if wb.body != nil {
return wb.body.Close()
}
return nil
}

10
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/version.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
// Version is the current release version of the otelhttp instrumentation.
func Version() string {
return "0.63.0"
// This string is updated by the pre_release.sh script during release
}