zipkincore

package
v0.0.0-...-e3c28a8 Latest Latest
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 Go to latest Published: Nov 7, 2020 License: MIT Imports: 7 Imported by: 2

Documentation

Index

Constants

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const CLIENT_ADDR = "ca"
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const CLIENT_RECV = "cr"
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const CLIENT_RECV_FRAGMENT = "crf"
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const CLIENT_SEND = "cs"
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const CLIENT_SEND_FRAGMENT = "csf"
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const ERROR = "error"
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const HTTP_HOST = "http.host"
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const HTTP_METHOD = "http.method"
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const HTTP_PATH = "http.path"
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const HTTP_REQUEST_SIZE = "http.request.size"
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const HTTP_RESPONSE_SIZE = "http.response.size"
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const HTTP_STATUS_CODE = "http.status_code"
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const HTTP_URL = "http.url"
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const LOCAL_COMPONENT = "lc"
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const SERVER_ADDR = "sa"
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const SERVER_RECV = "sr"
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const SERVER_RECV_FRAGMENT = "srf"
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const SERVER_SEND = "ss"
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const SERVER_SEND_FRAGMENT = "ssf"
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const WIRE_RECV = "wr"
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const WIRE_SEND = "ws"

Variables

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var Endpoint_Ipv6_DEFAULT []byte
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var GoUnusedProtection__ int
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var Span_Debug_DEFAULT bool = false
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var Span_Duration_DEFAULT int64
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var Span_ParentID_DEFAULT int64
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var Span_Timestamp_DEFAULT int64
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var Span_TraceIDHigh_DEFAULT int64

Functions

This section is empty.

Types

type Annotation 

type Annotation struct {
	Timestamp int64     `thrift:"timestamp,1" db:"timestamp" json:"timestamp"`
	Value     string    `thrift:"value,2" db:"value" json:"value"`
	Host      *Endpoint `thrift:"host,3" db:"host" json:"host,omitempty"`
}

Associates an event that explains latency with a timestamp.

Unlike log statements, annotations are often codes: for example "sr".

Attributes:

  • Timestamp: Microseconds from epoch.

This value should use the most precise value possible. For example, gettimeofday or multiplying currentTimeMillis by 1000.

  • Value: Usually a short tag indicating an event, like "sr" or "finagle.retry".
  • Host: The host that recorded the value, primarily for query by service name.

func NewAnnotation 

func NewAnnotation() *Annotation

func (*Annotation) GetHost 

func (p *Annotation) GetHost() *Endpoint

func (*Annotation) GetTimestamp 

func (p *Annotation) GetTimestamp() int64

func (*Annotation) GetValue 

func (p *Annotation) GetValue() string

func (*Annotation) IsSetHost 

func (p *Annotation) IsSetHost() bool

func (*Annotation) Read 

func (p *Annotation) Read(iprot thrift.TProtocol) error

func (*Annotation) ReadField1 

func (p *Annotation) ReadField1(iprot thrift.TProtocol) error

func (*Annotation) ReadField2 

func (p *Annotation) ReadField2(iprot thrift.TProtocol) error

func (*Annotation) ReadField3 

func (p *Annotation) ReadField3(iprot thrift.TProtocol) error

func (*Annotation) String 

func (p *Annotation) String() string

func (*Annotation) Write 

func (p *Annotation) Write(oprot thrift.TProtocol) error

type AnnotationType 

type AnnotationType int64

A subset of thrift base types, except BYTES. 

const (
	AnnotationType_BOOL   AnnotationType = 0
	AnnotationType_BYTES  AnnotationType = 1
	AnnotationType_I16    AnnotationType = 2
	AnnotationType_I32    AnnotationType = 3
	AnnotationType_I64    AnnotationType = 4
	AnnotationType_DOUBLE AnnotationType = 5
	AnnotationType_STRING AnnotationType = 6
)

func AnnotationTypeFromString 

func AnnotationTypeFromString(s string) (AnnotationType, error)

func AnnotationTypePtr 

func AnnotationTypePtr(v AnnotationType) *AnnotationType

func (AnnotationType) MarshalText 

func (p AnnotationType) MarshalText() ([]byte, error)

func (*AnnotationType) Scan 

func (p *AnnotationType) Scan(value interface{}) error

func (AnnotationType) String 

func (p AnnotationType) String() string

func (*AnnotationType) UnmarshalText 

func (p *AnnotationType) UnmarshalText(text []byte) error

func (*AnnotationType) Value 

func (p *AnnotationType) Value() (driver.Value, error)

type BinaryAnnotation 

type BinaryAnnotation struct {
	Key            string         `thrift:"key,1" db:"key" json:"key"`
	Value          []byte         `thrift:"value,2" db:"value" json:"value"`
	AnnotationType AnnotationType `thrift:"annotation_type,3" db:"annotation_type" json:"annotation_type"`
	Host           *Endpoint      `thrift:"host,4" db:"host" json:"host,omitempty"`
}

Binary annotations are tags applied to a Span to give it context. For example, a binary annotation of HTTP_PATH ("http.path") could the path to a resource in a RPC call.

Binary annotations of type STRING are always queryable, though more a historical implementation detail than a structural concern.

Binary annotations can repeat, and vary on the host. Similar to Annotation, the host indicates who logged the event. This allows you to tell the difference between the client and server side of the same key. For example, the key "http.path" might be different on the client and server side due to rewriting, like "/api/v1/myresource" vs "/myresource. Via the host field, you can see the different points of view, which often help in debugging.

Attributes:

  • Key: Name used to lookup spans, such as "http.path" or "finagle.version".
  • Value: Serialized thrift bytes, in TBinaryProtocol format.

For legacy reasons, byte order is big-endian. See THRIFT-3217.

  • AnnotationType: The thrift type of value, most often STRING.

annotation_type shouldn't vary for the same key.

  • Host: The host that recorded value, allowing query by service name or address.

There are two exceptions: when key is "ca" or "sa", this is the source or destination of an RPC. This exception allows zipkin to display network context of uninstrumented services, such as browsers or databases.

func NewBinaryAnnotation 

func NewBinaryAnnotation() *BinaryAnnotation

func (*BinaryAnnotation) GetAnnotationType 

func (p *BinaryAnnotation) GetAnnotationType() AnnotationType

func (*BinaryAnnotation) GetHost 

func (p *BinaryAnnotation) GetHost() *Endpoint

func (*BinaryAnnotation) GetKey 

func (p *BinaryAnnotation) GetKey() string

func (*BinaryAnnotation) GetValue 

func (p *BinaryAnnotation) GetValue() []byte

func (*BinaryAnnotation) IsSetHost 

func (p *BinaryAnnotation) IsSetHost() bool

func (*BinaryAnnotation) Read 

func (p *BinaryAnnotation) Read(iprot thrift.TProtocol) error

func (*BinaryAnnotation) ReadField1 

func (p *BinaryAnnotation) ReadField1(iprot thrift.TProtocol) error

func (*BinaryAnnotation) ReadField2 

func (p *BinaryAnnotation) ReadField2(iprot thrift.TProtocol) error

func (*BinaryAnnotation) ReadField3 

func (p *BinaryAnnotation) ReadField3(iprot thrift.TProtocol) error

func (*BinaryAnnotation) ReadField4 

func (p *BinaryAnnotation) ReadField4(iprot thrift.TProtocol) error

func (*BinaryAnnotation) String 

func (p *BinaryAnnotation) String() string

func (*BinaryAnnotation) Write 

func (p *BinaryAnnotation) Write(oprot thrift.TProtocol) error

type Endpoint 

type Endpoint struct {
	Ipv4        int32  `thrift:"ipv4,1" db:"ipv4" json:"ipv4"`
	Port        int16  `thrift:"port,2" db:"port" json:"port"`
	ServiceName string `thrift:"service_name,3" db:"service_name" json:"service_name"`
	Ipv6        []byte `thrift:"ipv6,4" db:"ipv6" json:"ipv6,omitempty"`
}

Indicates the network context of a service recording an annotation with two exceptions.

When a BinaryAnnotation, and key is CLIENT_ADDR or SERVER_ADDR, the endpoint indicates the source or destination of an RPC. This exception allows zipkin to display network context of uninstrumented services, or clients such as web browsers.

Attributes:

  • Ipv4: IPv4 host address packed into 4 bytes.

Ex for the ip 1.2.3.4, it would be (1 << 24) | (2 << 16) | (3 << 8) | 4

  • Port: IPv4 port or 0, if unknown.

Note: this is to be treated as an unsigned integer, so watch for negatives.

  • ServiceName: Classifier of a source or destination in lowercase, such as "zipkin-web".

This is the primary parameter for trace lookup, so should be intuitive as possible, for example, matching names in service discovery.

Conventionally, when the service name isn't known, service_name = "unknown". However, it is also permissible to set service_name = "" (empty string). The difference in the latter usage is that the span will not be queryable by service name unless more information is added to the span with non-empty service name, e.g. an additional annotation from the server.

Particularly clients may not have a reliable service name at ingest. One approach is to set service_name to "" at ingest, and later assign a better label based on binary annotations, such as user agent.

  • Ipv6: IPv6 host address packed into 16 bytes. Ex Inet6Address.getBytes()
var Annotation_Host_DEFAULT *Endpoint
var BinaryAnnotation_Host_DEFAULT *Endpoint

func NewEndpoint 

func NewEndpoint() *Endpoint

func (*Endpoint) GetIpv4 

func (p *Endpoint) GetIpv4() int32

func (*Endpoint) GetIpv6 

func (p *Endpoint) GetIpv6() []byte

func (*Endpoint) GetPort 

func (p *Endpoint) GetPort() int16

func (*Endpoint) GetServiceName 

func (p *Endpoint) GetServiceName() string

func (*Endpoint) IsSetIpv6 

func (p *Endpoint) IsSetIpv6() bool

func (*Endpoint) Read 

func (p *Endpoint) Read(iprot thrift.TProtocol) error

func (*Endpoint) ReadField1 

func (p *Endpoint) ReadField1(iprot thrift.TProtocol) error

func (*Endpoint) ReadField2 

func (p *Endpoint) ReadField2(iprot thrift.TProtocol) error

func (*Endpoint) ReadField3 

func (p *Endpoint) ReadField3(iprot thrift.TProtocol) error

func (*Endpoint) ReadField4 

func (p *Endpoint) ReadField4(iprot thrift.TProtocol) error

func (*Endpoint) String 

func (p *Endpoint) String() string

func (*Endpoint) Write 

func (p *Endpoint) Write(oprot thrift.TProtocol) error

type Span 

type Span struct {
	TraceID int64 `thrift:"trace_id,1" db:"trace_id" json:"trace_id"`
	// unused field # 2
	Name        string        `thrift:"name,3" db:"name" json:"name"`
	ID          int64         `thrift:"id,4" db:"id" json:"id"`
	ParentID    *int64        `thrift:"parent_id,5" db:"parent_id" json:"parent_id,omitempty"`
	Annotations []*Annotation `thrift:"annotations,6" db:"annotations" json:"annotations"`
	// unused field # 7
	BinaryAnnotations []*BinaryAnnotation `thrift:"binary_annotations,8" db:"binary_annotations" json:"binary_annotations"`
	Debug             bool                `thrift:"debug,9" db:"debug" json:"debug,omitempty"`
	Timestamp         *int64              `thrift:"timestamp,10" db:"timestamp" json:"timestamp,omitempty"`
	Duration          *int64              `thrift:"duration,11" db:"duration" json:"duration,omitempty"`
	TraceIDHigh       *int64              `thrift:"trace_id_high,12" db:"trace_id_high" json:"trace_id_high,omitempty"`
}

A trace is a series of spans (often RPC calls) which form a latency tree.

Spans are usually created by instrumentation in RPC clients or servers, but can also represent in-process activity. Annotations in spans are similar to log statements, and are sometimes created directly by application developers to indicate events of interest, such as a cache miss.

The root span is where parent_id = Nil; it usually has the longest duration in the trace.

Span identifiers are packed into i64s, but should be treated opaquely. String encoding is fixed-width lower-hex, to avoid signed interpretation.

Attributes:

  • TraceID: Unique 8-byte identifier for a trace, set on all spans within it.
  • Name: Span name in lowercase, rpc method for example. Conventionally, when the

span name isn't known, name = "unknown".

  • ID: Unique 8-byte identifier of this span within a trace. A span is uniquely

identified in storage by (trace_id, id).

  • ParentID: The parent's Span.id; absent if this the root span in a trace.
  • Annotations: Associates events that explain latency with a timestamp. Unlike log

statements, annotations are often codes: for example SERVER_RECV("sr"). Annotations are sorted ascending by timestamp.

  • BinaryAnnotations: Tags a span with context, usually to support query or aggregation. For

example, a binary annotation key could be "http.path".

  • Debug: True is a request to store this span even if it overrides sampling policy.
  • Timestamp: Epoch microseconds of the start of this span, absent if this an incomplete

span.

This value should be set directly by instrumentation, using the most precise value possible. For example, gettimeofday or syncing nanoTime against a tick of currentTimeMillis.

For compatibility with instrumentation that precede this field, collectors or span stores can derive this via Annotation.timestamp. For example, SERVER_RECV.timestamp or CLIENT_SEND.timestamp.

Timestamp is nullable for input only. Spans without a timestamp cannot be presented in a timeline: Span stores should not output spans missing a timestamp.

There are two known edge-cases where this could be absent: both cases exist when a collector receives a span in parts and a binary annotation precedes a timestamp. This is possible when..

  • The span is in-flight (ex not yet received a timestamp)
  • The span's start event was lost
  • Duration: Measurement in microseconds of the critical path, if known. Durations of

less than one microsecond must be rounded up to 1 microsecond.

This value should be set directly, as opposed to implicitly via annotation timestamps. Doing so encourages precision decoupled from problems of clocks, such as skew or NTP updates causing time to move backwards.

For compatibility with instrumentation that precede this field, collectors or span stores can derive this by subtracting Annotation.timestamp. For example, SERVER_SEND.timestamp - SERVER_RECV.timestamp.

If this field is persisted as unset, zipkin will continue to work, except duration query support will be implementation-specific. Similarly, setting this field non-atomically is implementation-specific.

This field is i64 vs i32 to support spans longer than 35 minutes.

  • TraceIDHigh: Optional unique 8-byte additional identifier for a trace. If non zero, this

means the trace uses 128 bit traceIds instead of 64 bit.

func NewSpan 

func NewSpan() *Span

func (*Span) GetAnnotations 

func (p *Span) GetAnnotations() []*Annotation

func (*Span) GetBinaryAnnotations 

func (p *Span) GetBinaryAnnotations() []*BinaryAnnotation

func (*Span) GetDebug 

func (p *Span) GetDebug() bool

func (*Span) GetDuration 

func (p *Span) GetDuration() int64

func (*Span) GetID 

func (p *Span) GetID() int64

func (*Span) GetName 

func (p *Span) GetName() string

func (*Span) GetParentID 

func (p *Span) GetParentID() int64

func (*Span) GetTimestamp 

func (p *Span) GetTimestamp() int64

func (*Span) GetTraceID 

func (p *Span) GetTraceID() int64

func (*Span) GetTraceIDHigh 

func (p *Span) GetTraceIDHigh() int64

func (*Span) IsSetDebug 

func (p *Span) IsSetDebug() bool

func (*Span) IsSetDuration 

func (p *Span) IsSetDuration() bool

func (*Span) IsSetParentID 

func (p *Span) IsSetParentID() bool

func (*Span) IsSetTimestamp 

func (p *Span) IsSetTimestamp() bool

func (*Span) IsSetTraceIDHigh 

func (p *Span) IsSetTraceIDHigh() bool

func (*Span) Read 

func (p *Span) Read(iprot thrift.TProtocol) error

func (*Span) ReadField1 

func (p *Span) ReadField1(iprot thrift.TProtocol) error

func (*Span) ReadField10 

func (p *Span) ReadField10(iprot thrift.TProtocol) error

func (*Span) ReadField11 

func (p *Span) ReadField11(iprot thrift.TProtocol) error

func (*Span) ReadField12 

func (p *Span) ReadField12(iprot thrift.TProtocol) error

func (*Span) ReadField3 

func (p *Span) ReadField3(iprot thrift.TProtocol) error

func (*Span) ReadField4 

func (p *Span) ReadField4(iprot thrift.TProtocol) error

func (*Span) ReadField5 

func (p *Span) ReadField5(iprot thrift.TProtocol) error

func (*Span) ReadField6 

func (p *Span) ReadField6(iprot thrift.TProtocol) error

func (*Span) ReadField8 

func (p *Span) ReadField8(iprot thrift.TProtocol) error

func (*Span) ReadField9 

func (p *Span) ReadField9(iprot thrift.TProtocol) error

func (*Span) String 

func (p *Span) String() string

func (*Span) Write 

func (p *Span) Write(oprot thrift.TProtocol) error

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