internal

package
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Published: Nov 6, 2023 License: Apache-2.0, BSD-3-Clause, Apache-2.0 Imports: 14 Imported by: 0

Documentation

Index

Constants

View Source
const (
	// EnvGitMetadataEnabledFlag specifies the environment variable name for enable/disable
	EnvGitMetadataEnabledFlag = "DD_TRACE_GIT_METADATA_ENABLED"
	// EnvGitRepositoryURL specifies the environment variable name for git repository URL
	EnvGitRepositoryURL = "DD_GIT_REPOSITORY_URL"
	// EnvGitCommitSha specifies the environment variable name git commit sha
	EnvGitCommitSha = "DD_GIT_COMMIT_SHA"
	// EnvDDTags specifies the environment variable name global tags
	EnvDDTags = "DD_TAGS"

	// TagRepositoryURL specifies the tag name for git repository URL
	TagRepositoryURL = "git.repository_url"
	// TagCommitSha specifies the tag name for git commit sha
	TagCommitSha = "git.commit.sha"
	// TagGoPath specifies the tag name for go module path
	TagGoPath = "go_path"

	// TraceTagRepositoryURL specifies the trace tag name for git repository URL
	TraceTagRepositoryURL = "_dd.git.repository_url"
	// TraceTagCommitSha specifies the trace tag name for git commit sha
	TraceTagCommitSha = "_dd.git.commit.sha"
	// TraceTagGoPath specifies the trace tag name for go module path
	TraceTagGoPath = "_dd.go_path"
)

Variables

View Source
var ActiveSpanKey = contextKey{}

ActiveSpanKey is used to set tracer context on a context.Context objects with a unique key

Functions

func AgentURLFromEnv

func AgentURLFromEnv() *url.URL

AgentURLFromEnv determines the trace agent URL from environment variable DD_TRACE_AGENT_URL. If the determined value is valid and the scheme is supported (unix, http or https), it will return an *url.URL. Otherwise, it returns nil.

func BoolEnv

func BoolEnv(key string, def bool) bool

BoolEnv returns the parsed boolean value of an environment variable, or def otherwise.

func CleanGitMetadataTags

func CleanGitMetadataTags(tags map[string]string)

CleanGitMetadataTags cleans up tags from git metadata

func ContainerID

func ContainerID() string

ContainerID attempts to return the container ID from /proc/self/cgroup or empty on failure.

func DurationEnv

func DurationEnv(key string, def time.Duration) time.Duration

DurationEnv returns the parsed duration value of an environment variable, or def otherwise.

func ForEachStringTag

func ForEachStringTag(str string, fn func(key string, val string))

ForEachStringTag runs fn on every key:val pair encountered in str. str may contain multiple key:val pairs separated by either space or comma (but not a mixture of both).

func GetGitMetadataTags

func GetGitMetadataTags() map[string]string

GetGitMetadataTags returns git metadata tags

func GetTracerGitMetadataTags

func GetTracerGitMetadataTags() map[string]string

GetTracerGitMetadataTags returns git metadata tags for tracer NB: Currently tracer inject tags with some workaround (only with _dd prefix and only for the first span in payload) So we provide different tag names

func IntEnv

func IntEnv(key string, def int) int

IntEnv returns the parsed int value of an environment variable, or def otherwise.

func IsExecutionTraced

func IsExecutionTraced(ctx context.Context) bool

IsExecutionTraced returns whether ctx is associated with an execution trace task, as indicated via WithExecutionTraced

func ParseTagString

func ParseTagString(str string) map[string]string

ParseTagString returns tags parsed from string as map

func ResetGitMetadataTags

func ResetGitMetadataTags()

ResetGitMetadataTags reset cashed metadata tags

func WithExecutionNotTraced

func WithExecutionNotTraced(ctx context.Context) context.Context

WithExecutionNotTraced marks that the context is *not* covered by an execution trace task. This is intended to prevent child spans (which inherit information from ctx) from being considered covered by a task, when an integration may create its own child span with its own execution trace task.

func WithExecutionTraced

func WithExecutionTraced(ctx context.Context) context.Context

WithExecutionTraced marks ctx as being associated with an execution trace task. It is assumed that ctx already contains a trace task. The caller is responsible for ending the task.

This is intended for a specific case where the database/sql contrib package only creates spans *after* an operation, in case the operation was unavailable, and thus execution trace tasks tied to the span only capture the very end. This function enables creating a task *before* creating a span, and communicating to the APM tracer that it does not need to create a task. In general, APM instrumentation should prefer creating tasks around the operation rather than after the fact, if possible.

Types

type LockMap

type LockMap struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

LockMap uses an RWMutex to synchronize map access to allow for concurrent access. This should not be used for cases with heavy write load and performance concerns.

func NewLockMap

func NewLockMap(m map[string]string) *LockMap

func (*LockMap) Clear

func (l *LockMap) Clear()

func (*LockMap) Get

func (l *LockMap) Get(k string) string

func (*LockMap) Iter

func (l *LockMap) Iter(f func(key string, val string))

Iter iterates over all the map entries passing in keys and values to provided func f. Note this is READ ONLY.

func (*LockMap) Len

func (l *LockMap) Len() int

func (*LockMap) Set

func (l *LockMap) Set(k, v string)

type StatsdClient

type StatsdClient interface {
	Incr(name string, tags []string, rate float64) error
	Count(name string, value int64, tags []string, rate float64) error
	Gauge(name string, value float64, tags []string, rate float64) error
	Timing(name string, value time.Duration, tags []string, rate float64) error
	Flush() error
	Close() error
}

Directories

Path Synopsis
dyngo
Package dyngo is the Go implementation of Datadog's Instrumentation Gateway which provides an event-based instrumentation API based on a stack representation of instrumented functions along with nested event listeners.
Package dyngo is the Go implementation of Datadog's Instrumentation Gateway which provides an event-based instrumentation API based on a stack representation of instrumented functions along with nested event listeners.
dyngo/instrumentation
Package instrumentation holds code commonly used between all instrumentation declinations (currently httpsec/grpcsec).
Package instrumentation holds code commonly used between all instrumentation declinations (currently httpsec/grpcsec).
dyngo/instrumentation/grpcsec
Package grpcsec is the gRPC instrumentation API and contract for AppSec defining an abstract run-time representation of gRPC handlers.
Package grpcsec is the gRPC instrumentation API and contract for AppSec defining an abstract run-time representation of gRPC handlers.
dyngo/instrumentation/httpsec
Package httpsec defines is the HTTP instrumentation API and contract for AppSec.
Package httpsec defines is the HTTP instrumentation API and contract for AppSec.
Package globalconfig stores configuration which applies globally to both the tracer and integrations.
Package globalconfig stores configuration which applies globally to both the tracer and integrations.
cachedfetch
Package cachedfetch provides a read-through cache for fetched values.
Package cachedfetch provides a read-through cache for fetched values.
ec2
ecs
gce
validate
Package validate provides hostname validation helpers
Package validate provides hostname validation helpers
Package httpmem provides an in-memory HTTP server and client, for testing
Package httpmem provides an in-memory HTTP server and client, for testing
Package log provides logging utilities for the tracer.
Package log provides logging utilities for the tracer.
Package namingschema provides functionality to create naming schemas used by integrations to set different service and span/operation names based on the value of the DD_TRACE_SPAN_ATTRIBUTE_SCHEMA environment variable.
Package namingschema provides functionality to create naming schemas used by integrations to set different service and span/operation names based on the value of the DD_TRACE_SPAN_ATTRIBUTE_SCHEMA environment variable.
Package normalizer provides tag normalization
Package normalizer provides tag normalization
Package osinfo provides information about the current operating system release
Package osinfo provides information about the current operating system release
Package telemetry implements a client for sending telemetry information to Datadog regarding usage of an APM library such as tracing or profiling.
Package telemetry implements a client for sending telemetry information to Datadog regarding usage of an APM library such as tracing or profiling.
telemetrytest
Package telemetrytest provides a mock implementation of the telemetry client for testing purposes
Package telemetrytest provides a mock implementation of the telemetry client for testing purposes
Package traceprof contains shared logic for cross-cutting tracer/profiler features.
Package traceprof contains shared logic for cross-cutting tracer/profiler features.
testapp
Package testapp has the protbuf/grpc definitions for the test application implemented in traceproftest.
Package testapp has the protbuf/grpc definitions for the test application implemented in traceproftest.
traceproftest
Package traceproftest contains test cases and test helpers for testing cross-cutting tracer/profiler features such as code hotspots and endpoints.
Package traceproftest contains test cases and test helpers for testing cross-cutting tracer/profiler features such as code hotspots and endpoints.

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