diff options
Diffstat (limited to 'vendor/go.opentelemetry.io/otel/trace/trace.go')
| -rw-r--r-- | vendor/go.opentelemetry.io/otel/trace/trace.go | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/vendor/go.opentelemetry.io/otel/trace/trace.go b/vendor/go.opentelemetry.io/otel/trace/trace.go index 28877d4ab..d49adf671 100644 --- a/vendor/go.opentelemetry.io/otel/trace/trace.go +++ b/vendor/go.opentelemetry.io/otel/trace/trace.go @@ -5,13 +5,8 @@ package trace // import "go.opentelemetry.io/otel/trace" import ( "bytes" - "context" "encoding/hex" "encoding/json" - - "go.opentelemetry.io/otel/attribute" - "go.opentelemetry.io/otel/codes" - "go.opentelemetry.io/otel/trace/embedded" ) const ( @@ -326,247 +321,3 @@ func (sc SpanContext) MarshalJSON() ([]byte, error) { Remote: sc.remote, }) } - -// Span is the individual component of a trace. It represents a single named -// and timed operation of a workflow that is traced. A Tracer is used to -// create a Span and it is then up to the operation the Span represents to -// properly end the Span when the operation itself ends. -// -// Warning: Methods may be added to this interface in minor releases. See -// package documentation on API implementation for information on how to set -// default behavior for unimplemented methods. -type Span interface { - // Users of the interface can ignore this. This embedded type is only used - // by implementations of this interface. See the "API Implementations" - // section of the package documentation for more information. - embedded.Span - - // End completes the Span. The Span is considered complete and ready to be - // delivered through the rest of the telemetry pipeline after this method - // is called. Therefore, updates to the Span are not allowed after this - // method has been called. - End(options ...SpanEndOption) - - // AddEvent adds an event with the provided name and options. - AddEvent(name string, options ...EventOption) - - // AddLink adds a link. - // Adding links at span creation using WithLinks is preferred to calling AddLink - // later, for contexts that are available during span creation, because head - // sampling decisions can only consider information present during span creation. - AddLink(link Link) - - // IsRecording returns the recording state of the Span. It will return - // true if the Span is active and events can be recorded. - IsRecording() bool - - // RecordError will record err as an exception span event for this span. An - // additional call to SetStatus is required if the Status of the Span should - // be set to Error, as this method does not change the Span status. If this - // span is not being recorded or err is nil then this method does nothing. - RecordError(err error, options ...EventOption) - - // SpanContext returns the SpanContext of the Span. The returned SpanContext - // is usable even after the End method has been called for the Span. - SpanContext() SpanContext - - // SetStatus sets the status of the Span in the form of a code and a - // description, provided the status hasn't already been set to a higher - // value before (OK > Error > Unset). The description is only included in a - // status when the code is for an error. - SetStatus(code codes.Code, description string) - - // SetName sets the Span name. - SetName(name string) - - // SetAttributes sets kv as attributes of the Span. If a key from kv - // already exists for an attribute of the Span it will be overwritten with - // the value contained in kv. - SetAttributes(kv ...attribute.KeyValue) - - // TracerProvider returns a TracerProvider that can be used to generate - // additional Spans on the same telemetry pipeline as the current Span. - TracerProvider() TracerProvider -} - -// Link is the relationship between two Spans. The relationship can be within -// the same Trace or across different Traces. -// -// For example, a Link is used in the following situations: -// -// 1. Batch Processing: A batch of operations may contain operations -// associated with one or more traces/spans. Since there can only be one -// parent SpanContext, a Link is used to keep reference to the -// SpanContext of all operations in the batch. -// 2. Public Endpoint: A SpanContext for an in incoming client request on a -// public endpoint should be considered untrusted. In such a case, a new -// trace with its own identity and sampling decision needs to be created, -// but this new trace needs to be related to the original trace in some -// form. A Link is used to keep reference to the original SpanContext and -// track the relationship. -type Link struct { - // SpanContext of the linked Span. - SpanContext SpanContext - - // Attributes describe the aspects of the link. - Attributes []attribute.KeyValue -} - -// LinkFromContext returns a link encapsulating the SpanContext in the provided ctx. -func LinkFromContext(ctx context.Context, attrs ...attribute.KeyValue) Link { - return Link{ - SpanContext: SpanContextFromContext(ctx), - Attributes: attrs, - } -} - -// SpanKind is the role a Span plays in a Trace. -type SpanKind int - -// As a convenience, these match the proto definition, see -// https://github.com/open-telemetry/opentelemetry-proto/blob/30d237e1ff3ab7aa50e0922b5bebdd93505090af/opentelemetry/proto/trace/v1/trace.proto#L101-L129 -// -// The unspecified value is not a valid `SpanKind`. Use `ValidateSpanKind()` -// to coerce a span kind to a valid value. -const ( - // SpanKindUnspecified is an unspecified SpanKind and is not a valid - // SpanKind. SpanKindUnspecified should be replaced with SpanKindInternal - // if it is received. - SpanKindUnspecified SpanKind = 0 - // SpanKindInternal is a SpanKind for a Span that represents an internal - // operation within an application. - SpanKindInternal SpanKind = 1 - // SpanKindServer is a SpanKind for a Span that represents the operation - // of handling a request from a client. - SpanKindServer SpanKind = 2 - // SpanKindClient is a SpanKind for a Span that represents the operation - // of client making a request to a server. - SpanKindClient SpanKind = 3 - // SpanKindProducer is a SpanKind for a Span that represents the operation - // of a producer sending a message to a message broker. Unlike - // SpanKindClient and SpanKindServer, there is often no direct - // relationship between this kind of Span and a SpanKindConsumer kind. A - // SpanKindProducer Span will end once the message is accepted by the - // message broker which might not overlap with the processing of that - // message. - SpanKindProducer SpanKind = 4 - // SpanKindConsumer is a SpanKind for a Span that represents the operation - // of a consumer receiving a message from a message broker. Like - // SpanKindProducer Spans, there is often no direct relationship between - // this Span and the Span that produced the message. - SpanKindConsumer SpanKind = 5 -) - -// ValidateSpanKind returns a valid span kind value. This will coerce -// invalid values into the default value, SpanKindInternal. -func ValidateSpanKind(spanKind SpanKind) SpanKind { - switch spanKind { - case SpanKindInternal, - SpanKindServer, - SpanKindClient, - SpanKindProducer, - SpanKindConsumer: - // valid - return spanKind - default: - return SpanKindInternal - } -} - -// String returns the specified name of the SpanKind in lower-case. -func (sk SpanKind) String() string { - switch sk { - case SpanKindInternal: - return "internal" - case SpanKindServer: - return "server" - case SpanKindClient: - return "client" - case SpanKindProducer: - return "producer" - case SpanKindConsumer: - return "consumer" - default: - return "unspecified" - } -} - -// Tracer is the creator of Spans. -// -// Warning: Methods may be added to this interface in minor releases. See -// package documentation on API implementation for information on how to set -// default behavior for unimplemented methods. -type Tracer interface { - // Users of the interface can ignore this. This embedded type is only used - // by implementations of this interface. See the "API Implementations" - // section of the package documentation for more information. - embedded.Tracer - - // Start creates a span and a context.Context containing the newly-created span. - // - // If the context.Context provided in `ctx` contains a Span then the newly-created - // Span will be a child of that span, otherwise it will be a root span. This behavior - // can be overridden by providing `WithNewRoot()` as a SpanOption, causing the - // newly-created Span to be a root span even if `ctx` contains a Span. - // - // When creating a Span it is recommended to provide all known span attributes using - // the `WithAttributes()` SpanOption as samplers will only have access to the - // attributes provided when a Span is created. - // - // Any Span that is created MUST also be ended. This is the responsibility of the user. - // Implementations of this API may leak memory or other resources if Spans are not ended. - Start(ctx context.Context, spanName string, opts ...SpanStartOption) (context.Context, Span) -} - -// TracerProvider provides Tracers that are used by instrumentation code to -// trace computational workflows. -// -// A TracerProvider is the collection destination of all Spans from Tracers it -// provides, it represents a unique telemetry collection pipeline. How that -// pipeline is defined, meaning how those Spans are collected, processed, and -// where they are exported, depends on its implementation. Instrumentation -// authors do not need to define this implementation, rather just use the -// provided Tracers to instrument code. -// -// Commonly, instrumentation code will accept a TracerProvider implementation -// at runtime from its users or it can simply use the globally registered one -// (see https://pkg.go.dev/go.opentelemetry.io/otel#GetTracerProvider). -// -// Warning: Methods may be added to this interface in minor releases. See -// package documentation on API implementation for information on how to set -// default behavior for unimplemented methods. -type TracerProvider interface { - // Users of the interface can ignore this. This embedded type is only used - // by implementations of this interface. See the "API Implementations" - // section of the package documentation for more information. - embedded.TracerProvider - - // Tracer returns a unique Tracer scoped to be used by instrumentation code - // to trace computational workflows. The scope and identity of that - // instrumentation code is uniquely defined by the name and options passed. - // - // The passed name needs to uniquely identify instrumentation code. - // Therefore, it is recommended that name is the Go package name of the - // library providing instrumentation (note: not the code being - // instrumented). Instrumentation libraries can have multiple versions, - // therefore, the WithInstrumentationVersion option should be used to - // distinguish these different codebases. Additionally, instrumentation - // libraries may sometimes use traces to communicate different domains of - // workflow data (i.e. using spans to communicate workflow events only). If - // this is the case, the WithScopeAttributes option should be used to - // uniquely identify Tracers that handle the different domains of workflow - // data. - // - // If the same name and options are passed multiple times, the same Tracer - // will be returned (it is up to the implementation if this will be the - // same underlying instance of that Tracer or not). It is not necessary to - // call this multiple times with the same name and options to get an - // up-to-date Tracer. All implementations will ensure any TracerProvider - // configuration changes are propagated to all provided Tracers. - // - // If name is empty, then an implementation defined default name will be - // used instead. - // - // This method is safe to call concurrently. - Tracer(name string, options ...TracerOption) Tracer -} |