raven

package module
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 Go to latest Published: Feb 26, 2018 License: BSD-3-Clause Imports: 28 Imported by: 0

README

raven Build Status

raven is a Go client for the Sentry event/error logging system.

Installation

go get github.com/getsentry/raven-go

Documentation

Overview

Package raven implements a client for the Sentry error logging service.

Example 
// ... i.e. raisedErr is incoming error
var raisedErr error
// sentry DSN generated by Sentry server
var sentryDSN string
// r is a request performed when error occured
var r *http.Request
client, err := New(sentryDSN)
if err != nil {
	log.Fatal(err)
}
trace := NewStacktrace(0, 2, nil)
packet := NewPacket(raisedErr.Error(), NewException(raisedErr, trace), NewHttp(r))
eventID, ch := client.Capture(packet, nil)
if err = <-ch; err != nil {
	log.Fatal(err)
}
message := fmt.Sprintf("Captured error with id %s: %q", eventID, raisedErr)
log.Println(message)

Output:

Index

Examples

Constants

View Source 
const (
	DEBUG   = Severity("debug")
	INFO    = Severity("info")
	WARNING = Severity("warning")
	ERROR   = Severity("error")
	FATAL   = Severity("fatal")
)

http://docs.python.org/2/howto/logging.html#logging-levels

Variables

View Source 
var (
	ErrPacketDropped         = errors.New("raven: packet dropped")
	ErrUnableToUnmarshalJSON = errors.New("raven: unable to unmarshal JSON")
	ErrMissingUser           = errors.New("raven: dsn missing public key and/or password")
	ErrMissingPrivateKey     = errors.New("raven: dsn missing private key")
	ErrMissingProjectID      = errors.New("raven: dsn missing project id")
	ErrInvalidSampleRate     = errors.New("raven: sample rate should be between 0 and 1")
)
View Source 
var DefaultClient = newClient(nil)

Initialize a default *Client instance

View Source 
var MaxQueueBuffer = 100

The maximum number of packets that will be buffered waiting to be delivered. Packets will be dropped if the buffer is full. Used by NewClient.

Functions

func Capture 

func Capture(packet *Packet, captureTags map[string]string) (eventID string, ch chan error)

Capture asynchronously delivers a packet to the Sentry server with the default *Client. It is a no-op when client is nil. A channel is provided if it is important to check for a send's success.

func CaptureError 

func CaptureError(err error, tags map[string]string, interfaces ...Interface) string

CaptureErrors formats and delivers an error to the Sentry server using the default *Client. Adds a stacktrace to the packet, excluding the call to this method.

func CaptureErrorAndWait 

func CaptureErrorAndWait(err error, tags map[string]string, interfaces ...Interface) string

CaptureErrorAndWait is identical to CaptureError, except it blocks and assures that the event was sent

func CaptureMessage 

func CaptureMessage(message string, tags map[string]string, interfaces ...Interface) string

CaptureMessage formats and delivers a string message to the Sentry server with the default *Client

func CaptureMessageAndWait 

func CaptureMessageAndWait(message string, tags map[string]string, interfaces ...Interface) string

CaptureMessageAndWait is identical to CaptureMessage except it blocks and waits for the message to be sent.

func CapturePanic 

func CapturePanic(f func(), tags map[string]string, interfaces ...Interface) (interface{}, string)

CapturePanic calls f and then recovers and reports a panic to the Sentry server if it occurs. If an error is captured, both the error and the reported Sentry error ID are returned.

func CapturePanicAndWait 

func CapturePanicAndWait(f func(), tags map[string]string, interfaces ...Interface) (interface{}, string)

CapturePanicAndWait is identical to CaptureError, except it blocks and assures that the event was sent

func ClearContext 

func ClearContext()

func Close 

func Close()

func IncludePaths 

func IncludePaths() []string

func ProjectID 

func ProjectID() string

func RecoveryHandler 

func RecoveryHandler(handler func(http.ResponseWriter, *http.Request)) func(http.ResponseWriter, *http.Request)

Recovery handler to wrap the stdlib net/http Mux. Example: 

http.HandleFunc("/", raven.RecoveryHandler(func(w http.ResponseWriter, r *http.Request) {
	...
}))

func Release 

func Release() string

func SetDSN 

func SetDSN(dsn string) error

Sets the DSN for the default *Client instance

func SetDefaultLoggerName 

func SetDefaultLoggerName(name string)

SetDefaultLoggerName sets the "defaultLoggerName" on the default *Client

func SetEnvironment 

func SetEnvironment(environment string)

SetEnvironment sets the "environment" tag on the default *Client

func SetHttpContext 

func SetHttpContext(h *Http)

func SetIgnoreErrors 

func SetIgnoreErrors(errs ...string) error

func SetIncludePaths 

func SetIncludePaths(p []string)

func SetRelease 

func SetRelease(release string)

SetRelease sets the "release" tag on the default *Client

func SetSampleRate 

func SetSampleRate(rate float32) error

SetSampleRate sets the "sample rate" on the degault *Client

func SetTagsContext 

func SetTagsContext(t map[string]string)

func SetUserContext 

func SetUserContext(u *User)

func URL 

func URL() string

func Wait 

func Wait()

Wait blocks and waits for all events to finish being sent to Sentry server

Types

type Client 

type Client struct {
	Tags map[string]string

	Transport Transport

	// DropHandler is called when a packet is dropped because the buffer is full.
	DropHandler func(*Packet)
	// contains filtered or unexported fields
}

Client encapsulates a connection to a Sentry server. It must be initialized by calling NewClient. Modification of fields concurrently with Send or after calling Report for the first time is not thread-safe.

func New 

func New(dsn string) (*Client, error)

New constructs a new Sentry client instance

func NewClient deprecated 

func NewClient(dsn string, tags map[string]string) (*Client, error)

NewClient constructs a Sentry client and spawns a background goroutine to handle packets sent by Client.Report.

Deprecated: use New and NewWithTags instead

func NewWithTags 

func NewWithTags(dsn string, tags map[string]string) (*Client, error)

NewWithTags constructs a new Sentry client instance with default tags.

func (*Client) Capture 

func (client *Client) Capture(packet *Packet, captureTags map[string]string) (eventID string, ch chan error)

Capture asynchronously delivers a packet to the Sentry server. It is a no-op when client is nil. A channel is provided if it is important to check for a send's success.

func (*Client) CaptureError 

func (client *Client) CaptureError(err error, tags map[string]string, interfaces ...Interface) string

CaptureErrors formats and delivers an error to the Sentry server. Adds a stacktrace to the packet, excluding the call to this method.

func (*Client) CaptureErrorAndWait 

func (client *Client) CaptureErrorAndWait(err error, tags map[string]string, interfaces ...Interface) string

CaptureErrorAndWait is identical to CaptureError, except it blocks and assures that the event was sent

func (*Client) CaptureMessage 

func (client *Client) CaptureMessage(message string, tags map[string]string, interfaces ...Interface) string

CaptureMessage formats and delivers a string message to the Sentry server.

func (*Client) CaptureMessageAndWait 

func (client *Client) CaptureMessageAndWait(message string, tags map[string]string, interfaces ...Interface) string

CaptureMessageAndWait is identical to CaptureMessage except it blocks and waits for the message to be sent.

func (*Client) CapturePanic 

func (client *Client) CapturePanic(f func(), tags map[string]string, interfaces ...Interface) (err interface{}, errorID string)

CapturePanic calls f and then recovers and reports a panic to the Sentry server if it occurs. If an error is captured, both the error and the reported Sentry error ID are returned.

func (*Client) CapturePanicAndWait 

func (client *Client) CapturePanicAndWait(f func(), tags map[string]string, interfaces ...Interface) (err interface{}, errorID string)

CapturePanicAndWait is identical to CaptureError, except it blocks and assures that the event was sent

func (*Client) ClearContext 

func (c *Client) ClearContext()

func (*Client) Close 

func (client *Client) Close()

func (*Client) IncludePaths 

func (client *Client) IncludePaths() []string

func (*Client) NewPacketFromError 

func (client *Client) NewPacketFromError(err error, interfaces ...Interface) *Packet

func (*Client) ProjectID 

func (client *Client) ProjectID() string

func (*Client) Release 

func (client *Client) Release() string

func (*Client) SetDSN 

func (client *Client) SetDSN(dsn string) error

SetDSN updates a client with a new DSN. It safe to call after and concurrently with calls to Report and Send.

func (*Client) SetDefaultLoggerName 

func (client *Client) SetDefaultLoggerName(name string)

SetDefaultLoggerName sets the default logger name.

func (*Client) SetEnvironment 

func (client *Client) SetEnvironment(environment string)

SetEnvironment sets the "environment" tag.

func (*Client) SetHttpContext 

func (c *Client) SetHttpContext(h *Http)

func (*Client) SetIgnoreErrors 

func (c *Client) SetIgnoreErrors(errs []string) error

func (*Client) SetIncludePaths 

func (client *Client) SetIncludePaths(p []string)

func (*Client) SetRelease 

func (client *Client) SetRelease(release string)

SetRelease sets the "release" tag.

func (*Client) SetSampleRate 

func (client *Client) SetSampleRate(rate float32) error

SetSampleRate sets how much sampling we want on client side

func (*Client) SetTagsContext 

func (c *Client) SetTagsContext(t map[string]string)

func (*Client) SetUserContext 

func (c *Client) SetUserContext(u *User)

func (*Client) URL 

func (client *Client) URL() string

func (*Client) Wait 

func (client *Client) Wait()

Wait blocks and waits for all events to finish being sent to Sentry server

type Culpriter 

type Culpriter interface {
	Culprit() string
}

type Exception 

type Exception struct {
	// Required
	Value string `json:"value"`

	// Optional
	Type       string      `json:"type,omitempty"`
	Module     string      `json:"module,omitempty"`
	Stacktrace *Stacktrace `json:"stacktrace,omitempty"`
}

https://docs.getsentry.com/hosted/clientdev/interfaces/#failure-interfaces

func NewException 

func NewException(err error, stacktrace *Stacktrace) *Exception

func (*Exception) Class 

func (e *Exception) Class() string

func (*Exception) Culprit 

func (e *Exception) Culprit() string

type Exceptions 

type Exceptions struct {
	// Required
	Values []*Exception `json:"values"`
}

Exceptions allows for chained errors https://docs.sentry.io/clientdev/interfaces/exception/

func (Exceptions) Class 

func (es Exceptions) Class() string

type HTTPTransport 

type HTTPTransport struct {
	*http.Client
}

HTTPTransport is the default transport, delivering packets to Sentry via the HTTP API.

func (*HTTPTransport) Send 

func (t *HTTPTransport) Send(url, authHeader string, packet *Packet) error

type Http 

type Http struct {
	// Required
	URL    string `json:"url"`
	Method string `json:"method"`
	Query  string `json:"query_string,omitempty"`

	// Optional
	Cookies string            `json:"cookies,omitempty"`
	Headers map[string]string `json:"headers,omitempty"`
	Env     map[string]string `json:"env,omitempty"`

	// Must be either a string or map[string]string
	Data interface{} `json:"data,omitempty"`
}

https://docs.getsentry.com/hosted/clientdev/interfaces/#context-interfaces

func NewHttp 

func NewHttp(req *http.Request) *Http

func (*Http) Class 

func (h *Http) Class() string

type Interface 

type Interface interface {
	// The Sentry class name. Example: sentry.interfaces.Stacktrace
	Class() string
}

An Interface is a Sentry interface that will be serialized as JSON. It must implement json.Marshaler or use json struct tags.

type Message 

type Message struct {
	// Required
	Message string `json:"message"`

	// Optional
	Params []interface{} `json:"params,omitempty"`
}

https://docs.getsentry.com/hosted/clientdev/interfaces/#message-interface

func (*Message) Class 

func (m *Message) Class() string

type Packet 

type Packet struct {
	// Required
	Message string `json:"message"`

	// Required, set automatically by Client.Send/Report via Packet.Init if blank
	EventID   string    `json:"event_id"`
	Project   string    `json:"project"`
	Timestamp Timestamp `json:"timestamp"`
	Level     Severity  `json:"level"`
	Logger    string    `json:"logger"`

	// Optional
	Platform    string                 `json:"platform,omitempty"`
	Culprit     string                 `json:"culprit,omitempty"`
	ServerName  string                 `json:"server_name,omitempty"`
	Release     string                 `json:"release,omitempty"`
	Environment string                 `json:"environment,omitempty"`
	Tags        Tags                   `json:"tags,omitempty"`
	Modules     map[string]string      `json:"modules,omitempty"`
	Fingerprint []string               `json:"fingerprint,omitempty"`
	Extra       map[string]interface{} `json:"extra,omitempty"`

	Interfaces []Interface `json:"-"`
}

https://docs.getsentry.com/hosted/clientdev/#building-the-json-packet

func NewPacket 

func NewPacket(message string, interfaces ...Interface) *Packet

NewPacket constructs a packet with the specified message and interfaces.

func NewPacketFromError 

func NewPacketFromError(err error, interfaces ...Interface) *Packet

func (*Packet) AddTags 

func (packet *Packet) AddTags(tags map[string]string)

func (*Packet) Init 

func (packet *Packet) Init(project string) error

Init initializes required fields in a packet. It is typically called by Client.Send/Report automatically.

func (*Packet) JSON 

func (packet *Packet) JSON() ([]byte, error)

type Query 

type Query struct {
	// Required
	Query string `json:"query"`

	// Optional
	Engine string `json:"engine,omitempty"`
}

https://docs.getsentry.com/hosted/clientdev/interfaces/#context-interfaces

func (*Query) Class 

func (q *Query) Class() string

type Severity 

type Severity string

type Stacktrace 

type Stacktrace struct {
	// Required
	Frames []*StacktraceFrame `json:"frames"`
}

https://docs.getsentry.com/hosted/clientdev/interfaces/#failure-interfaces

func GetOrNewStacktrace 

func GetOrNewStacktrace(err error, skip int, context int, appPackagePrefixes []string) *Stacktrace

Try to get stacktrace from err as an interface of github.com/pkg/errors, or else NewStacktrace()

func NewStacktrace 

func NewStacktrace(skip int, context int, appPackagePrefixes []string) *Stacktrace

Intialize and populate a new stacktrace, skipping skip frames.

context is the number of surrounding lines that should be included for context. Setting context to 3 would try to get seven lines. Setting context to -1 returns one line with no surrounding context, and 0 returns no context.

appPackagePrefixes is a list of prefixes used to check whether a package should be considered "in app".

func (*Stacktrace) Class 

func (s *Stacktrace) Class() string

func (*Stacktrace) Culprit 

func (s *Stacktrace) Culprit() string

type StacktraceFrame 

type StacktraceFrame struct {
	// At least one required
	Filename string `json:"filename,omitempty"`
	Function string `json:"function,omitempty"`
	Module   string `json:"module,omitempty"`

	// Optional
	Lineno       int      `json:"lineno,omitempty"`
	Colno        int      `json:"colno,omitempty"`
	AbsolutePath string   `json:"abs_path,omitempty"`
	ContextLine  string   `json:"context_line,omitempty"`
	PreContext   []string `json:"pre_context,omitempty"`
	PostContext  []string `json:"post_context,omitempty"`
	InApp        bool     `json:"in_app"`
}

func NewStacktraceFrame 

func NewStacktraceFrame(pc uintptr, file string, line, context int, appPackagePrefixes []string) *StacktraceFrame

Build a single frame using data returned from runtime.Caller.

context is the number of surrounding lines that should be included for context. Setting context to 3 would try to get seven lines. Setting context to -1 returns one line with no surrounding context, and 0 returns no context.

appPackagePrefixes is a list of prefixes used to check whether a package should be considered "in app".

type Tag 

type Tag struct {
	Key   string
	Value string
}

func (*Tag) MarshalJSON 

func (tag *Tag) MarshalJSON() ([]byte, error)

func (*Tag) UnmarshalJSON 

func (t *Tag) UnmarshalJSON(data []byte) error

type Tags 

type Tags []Tag

func (*Tags) UnmarshalJSON 

func (t *Tags) UnmarshalJSON(data []byte) error

type Template 

type Template struct {
	// Required
	Filename    string `json:"filename"`
	Lineno      int    `json:"lineno"`
	ContextLine string `json:"context_line"`

	// Optional
	PreContext   []string `json:"pre_context,omitempty"`
	PostContext  []string `json:"post_context,omitempty"`
	AbsolutePath string   `json:"abs_path,omitempty"`
}

https://docs.getsentry.com/hosted/clientdev/interfaces/#template-interface

func (*Template) Class 

func (t *Template) Class() string

type Timestamp 

type Timestamp time.Time

func (Timestamp) MarshalJSON 

func (t Timestamp) MarshalJSON() ([]byte, error)

func (*Timestamp) UnmarshalJSON 

func (timestamp *Timestamp) UnmarshalJSON(data []byte) error

type Transport 

type Transport interface {
	Send(url, authHeader string, packet *Packet) error
}

type User 

type User struct {
	// All fields are optional
	ID       string `json:"id,omitempty"`
	Username string `json:"username,omitempty"`
	Email    string `json:"email,omitempty"`
	IP       string `json:"ip_address,omitempty"`
}

https://docs.getsentry.com/hosted/clientdev/interfaces/#context-interfaces

func (*User) Class 

func (h *User) Class() string

type Writer 

type Writer struct {
	Client *Client
	Level  Severity
	Logger string // Logger name reported to Sentry
}

func (*Writer) Write 

func (w *Writer) Write(p []byte) (int, error)

Write formats the byte slice p into a string, and sends a message to Sentry at the severity level indicated by the Writer w.

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