sentry

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README


Official Sentry SDK for Go

Build Status Go Report Card Discord GoDoc go.dev

sentry-go provides a Sentry client implementation for the Go programming language. This is the next line of the Go SDK for Sentry, intended to replace the raven-go package.

Looking for the old raven-go SDK documentation? See the Legacy client section here. If you want to start using sentry-go instead, check out the migration guide.

Requirements

The only requirement is a Go compiler.

We verify this package against the 3 most recent releases of Go. Those are the supported versions. The exact versions are defined in GitHub workflow.

In addition, we run tests against the current master branch of the Go toolchain, though support for this configuration is best-effort.

Installation

sentry-go can be installed like any other Go library through go get:

$ go get github.com/superlistapp/sentry-go

Or, if you are already using Go Modules, you may specify a version number as well:

$ go get github.com/superlistapp/sentry-go@latest

Check out the list of released versions.

Configuration

To use sentry-go, you’ll need to import the sentry-go package and initialize it with your DSN and other options.

If not specified in the SDK initialization, the DSN, Release and Environment are read from the environment variables SENTRY_DSN, SENTRY_RELEASE and SENTRY_ENVIRONMENT, respectively.

More on this in the Configuration section of the official Sentry Go SDK documentation.

Usage

The SDK supports reporting errors and tracking application performance.

To get started, have a look at one of our examples:

We also provide a complete API reference.

For more detailed information about how to get the most out of sentry-go, checkout the official documentation:

Resources

License

Licensed under The 2-Clause BSD License, see LICENSE.

Community

Join Sentry's #go channel on Discord to get involved and help us improve the SDK!

Documentation

Overview

Package sentry is the official Sentry SDK for Go.

Use it to report errors and track application performance through distributed tracing.

For more information about Sentry and SDK features please have a look at the documentation site https://docs.sentry.io/platforms/go/.

Basic Usage

The first step is to initialize the SDK, providing at a minimum the DSN of your Sentry project. This step is accomplished through a call to sentry.Init. 

func main() {
	err := sentry.Init(...)
	...
}

A more detailed yet simple example is available at https://github.com/superlistapp/sentry-go/blob/master/example/basic/main.go.

Error Reporting

The Capture* functions report messages and errors to Sentry. 

sentry.CaptureMessage(...)
sentry.CaptureException(...)
sentry.CaptureEvent(...)

Use similarly named functions in the Hub for concurrent programs like web servers.

Performance Monitoring

You can use Sentry to monitor your application's performance. More information on the product page https://docs.sentry.io/product/performance/.

The StartSpan function creates new spans. 

span := sentry.StartSpan(ctx, "operation")
...
span.Finish()

Integrations

The SDK has support for several Go frameworks, available as subpackages.

Getting Support

For paid Sentry.io accounts, head out to https://sentry.io/support.

For all users, support channels include: 

Forum: https://forum.sentry.io
Discord: https://discord.gg/Ww9hbqr (#go channel)

If you found an issue with the SDK, please report through https://github.com/superlistapp/sentry-go/issues/new/choose.

For responsibly disclosing a security issue, please follow the steps in https://sentry.io/security/#vulnerability-disclosure.

Example (TransportWithHooks)

Initializing the SDK with a custom HTTP transport gives a lot of flexibility to inspect requests and responses. This example adds before and after hooks. 

package main

import (
	"fmt"
	"net/http"
	"net/http/httputil"
	"os"
	"time"

	"github.com/superlistapp/sentry-go"
)

// TransportWithHooks is an http.RoundTripper that wraps an existing
// http.RoundTripper adding hooks that run before and after each round trip.
type TransportWithHooks struct {
	http.RoundTripper
	Before func(*http.Request) error
	After  func(*http.Request, *http.Response, error) (*http.Response, error)
}

func (t *TransportWithHooks) RoundTrip(req *http.Request) (*http.Response, error) {
	if err := t.Before(req); err != nil {
		return nil, err
	}
	resp, err := t.RoundTripper.RoundTrip(req)
	return t.After(req, resp, err)
}

// Initializing the SDK with a custom HTTP transport gives a lot of flexibility
// to inspect requests and responses. This example adds before and after hooks.
func main() {
	err := sentry.Init(sentry.ClientOptions{
		// Either set your DSN here or set the SENTRY_DSN environment variable.
		Dsn:   "",
		Debug: true,
		HTTPTransport: &TransportWithHooks{
			RoundTripper: http.DefaultTransport,
			Before: func(req *http.Request) error {
				if b, err := httputil.DumpRequestOut(req, true); err != nil {
					fmt.Println(err)
				} else {
					fmt.Printf("%s\n", b)
				}
				return nil
			},
			After: func(req *http.Request, resp *http.Response, err error) (*http.Response, error) {
				if b, err := httputil.DumpResponse(resp, true); err != nil {
					fmt.Println(err)
				} else {
					fmt.Printf("%s\n", b)
				}
				return resp, err
			},
		},
	})
	if err != nil {
		fmt.Fprintf(os.Stderr, "sentry.Init: %s\n", err)
		os.Exit(1)
	}
	defer sentry.Flush(2 * time.Second)

	sentry.CaptureMessage("test")

}

Output:

Index

Examples

Constants

View Source 
const (
	// HubContextKey is the key used to store the current Hub.
	HubContextKey = contextKey(1)
	// RequestContextKey is the key used to store the current http.Request.
	RequestContextKey = contextKey(2)
)

Keys used to store values in a Context. Use with Context.Value to access values stored by the SDK.

View Source 
const Version = "0.11.0"

Version is the version of the SDK.

Variables

View Source 
var Logger = log.New(ioutil.Discard, "[Sentry] ", log.LstdFlags)

Logger is an instance of log.Logger that is use to provide debug information about running Sentry Client can be enabled by either using Logger.SetOutput directly or with Debug client option.

Functions

func AddBreadcrumb 

func AddBreadcrumb(breadcrumb *Breadcrumb)

AddBreadcrumb records a new breadcrumb.

The total number of breadcrumbs that can be recorded are limited by the configuration on the client.

func AddGlobalEventProcessor 

func AddGlobalEventProcessor(processor EventProcessor)

AddGlobalEventProcessor adds processor to the global list of event processors. Global event processors apply to all events.

AddGlobalEventProcessor is deprecated. Most users will prefer to initialize the SDK with Init and provide a ClientOptions.BeforeSend function or use Scope.AddEventProcessor instead.

func ConfigureScope 

func ConfigureScope(f func(scope *Scope))

ConfigureScope is a shorthand for CurrentHub().ConfigureScope.

func Flush 

func Flush(timeout time.Duration) bool

Flush waits until the underlying Transport sends any buffered events to the Sentry server, blocking for at most the given timeout. It returns false if the timeout was reached. In that case, some events may not have been sent.

Flush should be called before terminating the program to avoid unintentionally dropping events.

Do not call Flush indiscriminately after every call to CaptureEvent, CaptureException or CaptureMessage. Instead, to have the SDK send events over the network synchronously, configure it to use the HTTPSyncTransport in the call to Init.

func HasHubOnContext 

func HasHubOnContext(ctx context.Context) bool

HasHubOnContext checks whether Hub instance is bound to a given Context struct.

func Init 

func Init(options ClientOptions) error

Init initializes the SDK with options. The returned error is non-nil if options is invalid, for instance if a malformed DSN is provided.

func PopScope 

func PopScope()

PopScope is a shorthand for CurrentHub().PopScope.

func PushScope 

func PushScope()

PushScope is a shorthand for CurrentHub().PushScope.

func SetHubOnContext 

func SetHubOnContext(ctx context.Context, hub *Hub) context.Context

SetHubOnContext stores given Hub instance on the Context struct and returns a new Context.

func WithScope 

func WithScope(f func(scope *Scope))

WithScope is a shorthand for CurrentHub().WithScope.

Types 

type Breadcrumb struct {
	Type      string                 `json:"type,omitempty"`
	Category  string                 `json:"category,omitempty"`
	Message   string                 `json:"message,omitempty"`
	Data      map[string]interface{} `json:"data,omitempty"`
	Level     Level                  `json:"level,omitempty"`
	Timestamp time.Time              `json:"timestamp"`
}

Breadcrumb specifies an application event that occurred before a Sentry event. An event may contain one or more breadcrumbs. 

func (b *Breadcrumb) MarshalJSON() ([]byte, error)

MarshalJSON converts the Breadcrumb struct to JSON. 

type BreadcrumbHint map[string]interface{}

BreadcrumbHint contains information that can be associated with a Breadcrumb.

type Client 

type Client struct {

	// Transport is read-only. Replacing the transport of an existing client is
	// not supported, create a new client instead.
	Transport Transport
	// contains filtered or unexported fields
}

Client is the underlying processor that is used by the main API and Hub instances. It must be created with NewClient.

func NewClient 

func NewClient(options ClientOptions) (*Client, error)

NewClient creates and returns an instance of Client configured using ClientOptions.

Most users will not create clients directly. Instead, initialize the SDK with Init and use the package-level functions (for simple programs that run on a single goroutine) or hub methods (for concurrent programs, for example web servers).

func (*Client) AddEventProcessor 

func (client *Client) AddEventProcessor(processor EventProcessor)

AddEventProcessor adds an event processor to the client. It must not be called from concurrent goroutines. Most users will prefer to use ClientOptions.BeforeSend or Scope.AddEventProcessor instead.

Note that typical programs have only a single client created by Init and the client is shared among multiple hubs, one per goroutine, such that adding an event processor to the client affects all hubs that share the client.

func (*Client) CaptureEvent 

func (client *Client) CaptureEvent(event *Event, hint *EventHint, scope EventModifier) *EventID

CaptureEvent captures an event on the currently active client if any.

The event must already be assembled. Typically code would instead use the utility methods like CaptureException. The return value is the event ID. In case Sentry is disabled or event was dropped, the return value will be nil.

func (*Client) CaptureException 

func (client *Client) CaptureException(exception error, hint *EventHint, scope EventModifier) *EventID

CaptureException captures an error.

func (*Client) CaptureMessage 

func (client *Client) CaptureMessage(message string, hint *EventHint, scope EventModifier) *EventID

CaptureMessage captures an arbitrary message.

func (*Client) Flush 

func (client *Client) Flush(timeout time.Duration) bool

Flush waits until the underlying Transport sends any buffered events to the Sentry server, blocking for at most the given timeout. It returns false if the timeout was reached. In that case, some events may not have been sent.

Flush should be called before terminating the program to avoid unintentionally dropping events.

Do not call Flush indiscriminately after every call to CaptureEvent, CaptureException or CaptureMessage. Instead, to have the SDK send events over the network synchronously, configure it to use the HTTPSyncTransport in the call to Init.

func (Client) Options 

func (client Client) Options() ClientOptions

Options return ClientOptions for the current Client.

func (*Client) Recover 

func (client *Client) Recover(err interface{}, hint *EventHint, scope EventModifier) *EventID

Recover captures a panic. Returns EventID if successfully, or nil if there's no error to recover from.

func (*Client) RecoverWithContext 

func (client *Client) RecoverWithContext(
	ctx context.Context,
	err interface{},
	hint *EventHint,
	scope EventModifier,
) *EventID

RecoverWithContext captures a panic and passes relevant context object. Returns EventID if successfully, or nil if there's no error to recover from.

type ClientOptions 

type ClientOptions struct {
	// The DSN to use. If the DSN is not set, the client is effectively
	// disabled.
	Dsn string
	// In debug mode, the debug information is printed to stdout to help you
	// understand what sentry is doing.
	Debug bool
	// Configures whether SDK should generate and attach stacktraces to pure
	// capture message calls.
	AttachStacktrace bool
	// The sample rate for event submission in the range [0.0, 1.0]. By default,
	// all events are sent. Thus, as a historical special case, the sample rate
	// 0.0 is treated as if it was 1.0. To drop all events, set the DSN to the
	// empty string.
	SampleRate float64
	// The sample rate for sampling traces in the range [0.0, 1.0].
	TracesSampleRate float64
	// Used to customize the sampling of traces, overrides TracesSampleRate.
	TracesSampler TracesSampler
	// List of regexp strings that will be used to match against event's message
	// and if applicable, caught errors type and value.
	// If the match is found, then a whole event will be dropped.
	IgnoreErrors []string
	// BeforeSend is called before error events are sent to Sentry.
	// Use it to mutate the event or return nil to discard the event.
	// See EventProcessor if you need to mutate transactions.
	BeforeSend func(event *Event, hint *EventHint) *Event
	// Before breadcrumb add callback.
	BeforeBreadcrumb func(breadcrumb *Breadcrumb, hint *BreadcrumbHint) *Breadcrumb
	// Integrations to be installed on the current Client, receives default
	// integrations.
	Integrations func([]Integration) []Integration
	// io.Writer implementation that should be used with the Debug mode.
	DebugWriter io.Writer
	// The transport to use. Defaults to HTTPTransport.
	Transport Transport
	// The server name to be reported.
	ServerName string
	// The release to be sent with events.
	//
	// Some Sentry features are built around releases, and, thus, reporting
	// events with a non-empty release improves the product experience. See
	// https://docs.sentry.io/product/releases/.
	//
	// If Release is not set, the SDK will try to derive a default value
	// from environment variables or the Git repository in the working
	// directory.
	//
	// If you distribute a compiled binary, it is recommended to set the
	// Release value explicitly at build time. As an example, you can use:
	//
	// 	go build -ldflags='-X main.release=VALUE'
	//
	// That will set the value of a predeclared variable 'release' in the
	// 'main' package to 'VALUE'. Then, use that variable when initializing
	// the SDK:
	//
	// 	sentry.Init(ClientOptions{Release: release})
	//
	// See https://golang.org/cmd/go/ and https://golang.org/cmd/link/ for
	// the official documentation of -ldflags and -X, respectively.
	Release string
	// The dist to be sent with events.
	Dist string
	// The environment to be sent with events.
	Environment string
	// Maximum number of breadcrumbs.
	MaxBreadcrumbs int
	// An optional pointer to http.Client that will be used with a default
	// HTTPTransport. Using your own client will make HTTPTransport, HTTPProxy,
	// HTTPSProxy and CaCerts options ignored.
	HTTPClient *http.Client
	// An optional pointer to http.Transport that will be used with a default
	// HTTPTransport. Using your own transport will make HTTPProxy, HTTPSProxy
	// and CaCerts options ignored.
	HTTPTransport http.RoundTripper
	// An optional HTTP proxy to use.
	// This will default to the HTTP_PROXY environment variable.
	HTTPProxy string
	// An optional HTTPS proxy to use.
	// This will default to the HTTPS_PROXY environment variable.
	// HTTPS_PROXY takes precedence over HTTP_PROXY for https requests.
	HTTPSProxy string
	// An optional set of SSL certificates to use.
	CaCerts *x509.CertPool
}

ClientOptions that configures a SDK Client.

type Dsn 

type Dsn struct {
	// contains filtered or unexported fields
}

Dsn is used as the remote address source to client transport.

func NewDsn 

func NewDsn(rawURL string) (*Dsn, error)

NewDsn creates a Dsn by parsing rawURL. Most users will never call this function directly. It is provided for use in custom Transport implementations.

func (Dsn) EnvelopeAPIURL 

func (dsn Dsn) EnvelopeAPIURL() *url.URL

EnvelopeAPIURL returns the URL of the envelope endpoint of the project associated with the DSN.

func (Dsn) MarshalJSON 

func (dsn Dsn) MarshalJSON() ([]byte, error)

MarshalJSON converts the Dsn struct to JSON.

func (Dsn) RequestHeaders 

func (dsn Dsn) RequestHeaders() map[string]string

RequestHeaders returns all the necessary headers that have to be used in the transport.

func (Dsn) StoreAPIURL 

func (dsn Dsn) StoreAPIURL() *url.URL

StoreAPIURL returns the URL of the store endpoint of the project associated with the DSN.

func (Dsn) String 

func (dsn Dsn) String() string

String formats Dsn struct into a valid string url.

func (*Dsn) UnmarshalJSON 

func (dsn *Dsn) UnmarshalJSON(data []byte) error

UnmarshalJSON converts JSON data to the Dsn struct.

type DsnParseError 

type DsnParseError struct {
	Message string
}

DsnParseError represents an error that occurs if a Sentry DSN cannot be parsed.

func (DsnParseError) Error 

func (e DsnParseError) Error() string

type Event 

type Event struct {
	Breadcrumbs []*Breadcrumb          `json:"breadcrumbs,omitempty"`
	Contexts    map[string]interface{} `json:"contexts,omitempty"`
	Dist        string                 `json:"dist,omitempty"`
	Environment string                 `json:"environment,omitempty"`
	EventID     EventID                `json:"event_id,omitempty"`
	Extra       map[string]interface{} `json:"extra,omitempty"`
	Fingerprint []string               `json:"fingerprint,omitempty"`
	Level       Level                  `json:"level,omitempty"`
	Message     string                 `json:"message,omitempty"`
	Platform    string                 `json:"platform,omitempty"`
	Release     string                 `json:"release,omitempty"`
	Sdk         SdkInfo                `json:"sdk,omitempty"`
	ServerName  string                 `json:"server_name,omitempty"`
	Threads     []Thread               `json:"threads,omitempty"`
	Tags        map[string]string      `json:"tags,omitempty"`
	Timestamp   time.Time              `json:"timestamp"`
	Transaction string                 `json:"transaction,omitempty"`
	User        User                   `json:"user,omitempty"`
	Logger      string                 `json:"logger,omitempty"`
	Modules     map[string]string      `json:"modules,omitempty"`
	Request     *Request               `json:"request,omitempty"`
	Exception   []Exception            `json:"exception,omitempty"`

	Type      string    `json:"type,omitempty"`
	StartTime time.Time `json:"start_timestamp"`
	Spans     []*Span   `json:"spans,omitempty"`
}

Event is the fundamental data structure that is sent to Sentry.

func NewEvent 

func NewEvent() *Event

NewEvent creates a new Event.

func (*Event) MarshalJSON 

func (e *Event) MarshalJSON() ([]byte, error)

MarshalJSON converts the Event struct to JSON.

type EventHint 

type EventHint struct {
	Data               interface{}
	EventID            string
	OriginalException  error
	RecoveredException interface{}
	Context            context.Context
	Request            *http.Request
	Response           *http.Response
}

EventHint contains information that can be associated with an Event.

type EventID 

type EventID string

EventID is a hexadecimal string representing a unique uuid4 for an Event. An EventID must be 32 characters long, lowercase and not have any dashes.

func CaptureEvent 

func CaptureEvent(event *Event) *EventID

CaptureEvent captures an event on the currently active client if any.

The event must already be assembled. Typically code would instead use the utility methods like CaptureException. The return value is the event ID. In case Sentry is disabled or event was dropped, the return value will be nil.

func CaptureException 

func CaptureException(exception error) *EventID

CaptureException captures an error.

func CaptureMessage 

func CaptureMessage(message string) *EventID

CaptureMessage captures an arbitrary message.

func LastEventID 

func LastEventID() EventID

LastEventID returns an ID of last captured event.

func Recover 

func Recover() *EventID

Recover captures a panic.

func RecoverWithContext 

func RecoverWithContext(ctx context.Context) *EventID

RecoverWithContext captures a panic and passes relevant context object.

type EventModifier 

type EventModifier interface {
	ApplyToEvent(event *Event, hint *EventHint) *Event
}

EventModifier is the interface that wraps the ApplyToEvent method.

ApplyToEvent changes an event based on external data and/or an event hint.

type EventProcessor 

type EventProcessor func(event *Event, hint *EventHint) *Event

EventProcessor is a function that processes an event. Event processors are used to change an event before it is sent to Sentry.

type Exception 

type Exception struct {
	Type       string      `json:"type,omitempty"`  // used as the main issue title
	Value      string      `json:"value,omitempty"` // used as the main issue subtitle
	Module     string      `json:"module,omitempty"`
	ThreadID   string      `json:"thread_id,omitempty"`
	Stacktrace *Stacktrace `json:"stacktrace,omitempty"`
}

Exception specifies an error that occurred.

type Frame 

type Frame struct {
	Function    string                 `json:"function,omitempty"`
	Symbol      string                 `json:"symbol,omitempty"`
	Module      string                 `json:"module,omitempty"`
	Package     string                 `json:"package,omitempty"`
	Filename    string                 `json:"filename,omitempty"`
	AbsPath     string                 `json:"abs_path,omitempty"`
	Lineno      int                    `json:"lineno,omitempty"`
	Colno       int                    `json:"colno,omitempty"`
	PreContext  []string               `json:"pre_context,omitempty"`
	ContextLine string                 `json:"context_line,omitempty"`
	PostContext []string               `json:"post_context,omitempty"`
	InApp       bool                   `json:"in_app,omitempty"`
	Vars        map[string]interface{} `json:"vars,omitempty"`
}

Frame represents a function call and it's metadata. Frames are associated with a Stacktrace.

func NewFrame 

func NewFrame(f runtime.Frame) Frame

NewFrame assembles a stacktrace frame out of runtime.Frame.

type HTTPSyncTransport 

type HTTPSyncTransport struct {

	// HTTP Client request timeout. Defaults to 30 seconds.
	Timeout time.Duration
	// contains filtered or unexported fields
}

HTTPSyncTransport is a blocking implementation of Transport.

Clients using this transport will send requests to Sentry sequentially and block until a response is returned.

The blocking behavior is useful in a limited set of use cases. For example, use it when deploying code to a Function as a Service ("Serverless") platform, where any work happening in a background goroutine is not guaranteed to execute.

For most cases, prefer HTTPTransport.

func NewHTTPSyncTransport 

func NewHTTPSyncTransport() *HTTPSyncTransport

NewHTTPSyncTransport returns a new pre-configured instance of HTTPSyncTransport.

func (*HTTPSyncTransport) Configure 

func (t *HTTPSyncTransport) Configure(options ClientOptions)

Configure is called by the Client itself, providing it it's own ClientOptions.

func (*HTTPSyncTransport) Flush 

func (t *HTTPSyncTransport) Flush(_ time.Duration) bool

Flush is a no-op for HTTPSyncTransport. It always returns true immediately.

func (*HTTPSyncTransport) SendEvent 

func (t *HTTPSyncTransport) SendEvent(event *Event)

SendEvent assembles a new packet out of Event and sends it to remote server.

type HTTPTransport 

type HTTPTransport struct {

	// Size of the transport buffer. Defaults to 30.
	BufferSize int
	// HTTP Client request timeout. Defaults to 30 seconds.
	Timeout time.Duration
	// contains filtered or unexported fields
}

HTTPTransport is the default, non-blocking, implementation of Transport.

Clients using this transport will enqueue requests in a buffer and return to the caller before any network communication has happened. Requests are sent to Sentry sequentially from a background goroutine.

func NewHTTPTransport 

func NewHTTPTransport() *HTTPTransport

NewHTTPTransport returns a new pre-configured instance of HTTPTransport.

func (*HTTPTransport) Configure 

func (t *HTTPTransport) Configure(options ClientOptions)

Configure is called by the Client itself, providing it it's own ClientOptions.

func (*HTTPTransport) Flush 

func (t *HTTPTransport) Flush(timeout time.Duration) bool

Flush waits until any buffered events are sent to the Sentry server, blocking for at most the given timeout. It returns false if the timeout was reached. In that case, some events may not have been sent.

Flush should be called before terminating the program to avoid unintentionally dropping events.

Do not call Flush indiscriminately after every call to SendEvent. Instead, to have the SDK send events over the network synchronously, configure it to use the HTTPSyncTransport in the call to Init.

func (*HTTPTransport) SendEvent 

func (t *HTTPTransport) SendEvent(event *Event)

SendEvent assembles a new packet out of Event and sends it to remote server.

type Hub 

type Hub struct {
	// contains filtered or unexported fields
}

Hub is the central object that manages scopes and clients.

This can be used to capture events and manage the scope. The default hub that is available automatically.

In most situations developers do not need to interface the hub. Instead toplevel convenience functions are exposed that will automatically dispatch to global (CurrentHub) hub. In some situations this might not be possible in which case it might become necessary to manually work with the hub. This is for instance the case when working with async code.

func CurrentHub 

func CurrentHub() *Hub

CurrentHub returns an instance of previously initialized Hub stored in the global namespace.

func GetHubFromContext 

func GetHubFromContext(ctx context.Context) *Hub

GetHubFromContext tries to retrieve Hub instance from the given Context struct or return nil if one is not found.

func NewHub 

func NewHub(client *Client, scope *Scope) *Hub

NewHub returns an instance of a Hub with provided Client and Scope bound.

func (*Hub) AddBreadcrumb 

func (hub *Hub) AddBreadcrumb(breadcrumb *Breadcrumb, hint *BreadcrumbHint)

AddBreadcrumb records a new breadcrumb.

The total number of breadcrumbs that can be recorded are limited by the configuration on the client.

func (*Hub) BindClient 

func (hub *Hub) BindClient(client *Client)

BindClient binds a new Client for the current Hub.

func (*Hub) CaptureEvent 

func (hub *Hub) CaptureEvent(event *Event) *EventID

CaptureEvent calls the method of a same name on currently bound Client instance passing it a top-level Scope. Returns EventID if successfully, or nil if there's no Scope or Client available.

func (*Hub) CaptureException 

func (hub *Hub) CaptureException(exception error) *EventID

CaptureException calls the method of a same name on currently bound Client instance passing it a top-level Scope. Returns EventID if successfully, or nil if there's no Scope or Client available.

func (*Hub) CaptureMessage 

func (hub *Hub) CaptureMessage(message string) *EventID

CaptureMessage calls the method of a same name on currently bound Client instance passing it a top-level Scope. Returns EventID if successfully, or nil if there's no Scope or Client available.

func (*Hub) Client 

func (hub *Hub) Client() *Client

Client returns top-level Client of the current Hub or nil if no Client is bound.

func (*Hub) Clone 

func (hub *Hub) Clone() *Hub

Clone returns a copy of the current Hub with top-most scope and client copied over.

func (*Hub) ConfigureScope 

func (hub *Hub) ConfigureScope(f func(scope *Scope))

ConfigureScope runs f in the current scope.

It is useful to set data that applies to all events that share the current scope.

Modifying the scope affects all references to the current scope.

See also WithScope for making isolated temporary changes.

func (*Hub) Flush 

func (hub *Hub) Flush(timeout time.Duration) bool

Flush waits until the underlying Transport sends any buffered events to the Sentry server, blocking for at most the given timeout. It returns false if the timeout was reached. In that case, some events may not have been sent.

Flush should be called before terminating the program to avoid unintentionally dropping events.

Do not call Flush indiscriminately after every call to CaptureEvent, CaptureException or CaptureMessage. Instead, to have the SDK send events over the network synchronously, configure it to use the HTTPSyncTransport in the call to Init.

func (*Hub) LastEventID 

func (hub *Hub) LastEventID() EventID

LastEventID returns an ID of last captured event for the current Hub.

func (*Hub) PopScope 

func (hub *Hub) PopScope()

PopScope drops the most recent scope.

Calls to PopScope must be coordinated with PushScope. For most cases, using WithScope should be more convenient.

Calls to PopScope that do not match previous calls to PushScope are silently ignored.

func (*Hub) PushScope 

func (hub *Hub) PushScope() *Scope

PushScope pushes a new scope for the current Hub and reuses previously bound Client.

func (*Hub) Recover 

func (hub *Hub) Recover(err interface{}) *EventID

Recover calls the method of a same name on currently bound Client instance passing it a top-level Scope. Returns EventID if successfully, or nil if there's no Scope or Client available.

func (*Hub) RecoverWithContext 

func (hub *Hub) RecoverWithContext(ctx context.Context, err interface{}) *EventID

RecoverWithContext calls the method of a same name on currently bound Client instance passing it a top-level Scope. Returns EventID if successfully, or nil if there's no Scope or Client available.

func (*Hub) Scope 

func (hub *Hub) Scope() *Scope

Scope returns top-level Scope of the current Hub or nil if no Scope is bound.

func (*Hub) WithScope 

func (hub *Hub) WithScope(f func(scope *Scope))

WithScope runs f in an isolated temporary scope.

It is useful when extra data should be sent with a single capture call, for instance a different level or tags.

The scope passed to f starts as a clone of the current scope and can be freely modified without affecting the current scope.

It is a shorthand for PushScope followed by PopScope.

type Integration 

type Integration interface {
	Name() string
	SetupOnce(client *Client)
}

Integration allows for registering a functions that modify or discard captured events.

type Level 

type Level string

Level marks the severity of the event. 

const (
	LevelDebug   Level = "debug"
	LevelInfo    Level = "info"
	LevelWarning Level = "warning"
	LevelError   Level = "error"
	LevelFatal   Level = "fatal"
)

Describes the severity of the event.

type Request 

type Request struct {
	URL         string            `json:"url,omitempty"`
	Method      string            `json:"method,omitempty"`
	Data        string            `json:"data,omitempty"`
	QueryString string            `json:"query_string,omitempty"`
	Cookies     string            `json:"cookies,omitempty"`
	Headers     map[string]string `json:"headers,omitempty"`
	Env         map[string]string `json:"env,omitempty"`
}

Request contains information on a HTTP request related to the event.

func NewRequest 

func NewRequest(r *http.Request) *Request

NewRequest returns a new Sentry Request from the given http.Request.

NewRequest avoids operations that depend on network access. In particular, it does not read r.Body.

type Sampled 

type Sampled int8

Sampled signifies a sampling decision. 

const (
	SampledFalse Sampled = -1 + iota
	SampledUndefined
	SampledTrue
)

The possible trace sampling decisions are: SampledFalse, SampledUndefined (default) and SampledTrue.

func (Sampled) Bool 

func (s Sampled) Bool() bool

Bool returns true if the sample decision is SampledTrue, false otherwise.

func (Sampled) String 

func (s Sampled) String() string

type SamplingContext 

type SamplingContext struct {
	Span   *Span // The current span, always non-nil.
	Parent *Span // The parent span, may be nil.
}

A SamplingContext is passed to a TracesSampler to determine a sampling decision.

type Scope 

type Scope struct {
	// contains filtered or unexported fields
}

Scope holds contextual data for the current scope.

The scope is an object that can cloned efficiently and stores data that is locally relevant to an event. For instance the scope will hold recorded breadcrumbs and similar information.

The scope can be interacted with in two ways. First, the scope is routinely updated with information by functions such as AddBreadcrumb which will modify the current scope. Second, the current scope can be configured through the ConfigureScope function or Hub method of the same name.

The scope is meant to be modified but not inspected directly. When preparing an event for reporting, the current client adds information from the current scope into the event.

func NewScope 

func NewScope() *Scope

NewScope creates a new Scope.

func (*Scope) AddBreadcrumb 

func (scope *Scope) AddBreadcrumb(breadcrumb *Breadcrumb, limit int)

AddBreadcrumb adds new breadcrumb to the current scope and optionally throws the old one if limit is reached.

func (*Scope) AddEventProcessor 

func (scope *Scope) AddEventProcessor(processor EventProcessor)

AddEventProcessor adds an event processor to the current scope.

func (*Scope) ApplyToEvent 

func (scope *Scope) ApplyToEvent(event *Event, hint *EventHint) *Event

ApplyToEvent takes the data from the current scope and attaches it to the event.

func (*Scope) Clear 

func (scope *Scope) Clear()

Clear removes the data from the current scope. Not safe for concurrent use.

func (*Scope) ClearBreadcrumbs 

func (scope *Scope) ClearBreadcrumbs()

ClearBreadcrumbs clears all breadcrumbs from the current scope.

func (*Scope) Clone 

func (scope *Scope) Clone() *Scope

Clone returns a copy of the current scope with all data copied over.

func (*Scope) RemoveContext 

func (scope *Scope) RemoveContext(key string)

RemoveContext removes a context from the current scope.

func (*Scope) RemoveExtra 

func (scope *Scope) RemoveExtra(key string)

RemoveExtra removes a extra from the current scope.

func (*Scope) RemoveTag 

func (scope *Scope) RemoveTag(key string)

RemoveTag removes a tag from the current scope.

func (*Scope) SetContext 

func (scope *Scope) SetContext(key string, value interface{})

SetContext adds a context to the current scope.

func (*Scope) SetContexts 

func (scope *Scope) SetContexts(contexts map[string]interface{})

SetContexts assigns multiple contexts to the current scope.

func (*Scope) SetExtra 

func (scope *Scope) SetExtra(key string, value interface{})

SetExtra adds an extra to the current scope.

func (*Scope) SetExtras 

func (scope *Scope) SetExtras(extra map[string]interface{})

SetExtras assigns multiple extras to the current scope.

func (*Scope) SetFingerprint 

func (scope *Scope) SetFingerprint(fingerprint []string)

SetFingerprint sets new fingerprint for the current scope.

func (*Scope) SetLevel 

func (scope *Scope) SetLevel(level Level)

SetLevel sets new level for the current scope.

func (*Scope) SetRequest 

func (scope *Scope) SetRequest(r *http.Request)

SetRequest sets the request for the current scope.

func (*Scope) SetRequestBody 

func (scope *Scope) SetRequestBody(b []byte)

SetRequestBody sets the request body for the current scope.

This method should only be called when the body bytes are already available in memory. Typically, the request body is buffered lazily from the Request.Body from SetRequest.

func (*Scope) SetTag 

func (scope *Scope) SetTag(key, value string)

SetTag adds a tag to the current scope.

func (*Scope) SetTags 

func (scope *Scope) SetTags(tags map[string]string)

SetTags assigns multiple tags to the current scope.

func (*Scope) SetTransaction 

func (scope *Scope) SetTransaction(name string)

SetTransaction sets the transaction name for the current transaction.

func (*Scope) SetUser 

func (scope *Scope) SetUser(user User)

SetUser sets the user for the current scope.

func (*Scope) Transaction 

func (scope *Scope) Transaction() (name string)

Transaction returns the transaction name for the current transaction.

type SdkInfo 

type SdkInfo struct {
	Name         string       `json:"name,omitempty"`
	Version      string       `json:"version,omitempty"`
	Integrations []string     `json:"integrations,omitempty"`
	Packages     []SdkPackage `json:"packages,omitempty"`
}

SdkInfo contains all metadata about about the SDK being used.

type SdkPackage 

type SdkPackage struct {
	Name    string `json:"name,omitempty"`
	Version string `json:"version,omitempty"`
}

SdkPackage describes a package that was installed.

type Span 

type Span struct {
	TraceID      TraceID                `json:"trace_id"`
	SpanID       SpanID                 `json:"span_id"`
	ParentSpanID SpanID                 `json:"parent_span_id"`
	Op           string                 `json:"op,omitempty"`
	Description  string                 `json:"description,omitempty"`
	Status       SpanStatus             `json:"status,omitempty"`
	Tags         map[string]string      `json:"tags,omitempty"`
	StartTime    time.Time              `json:"start_timestamp"`
	EndTime      time.Time              `json:"timestamp"`
	Data         map[string]interface{} `json:"data,omitempty"`

	Sampled Sampled `json:"-"`
	// contains filtered or unexported fields
}

A Span is the building block of a Sentry transaction. Spans build up a tree structure of timed operations. The span tree makes up a transaction event that is sent to Sentry when the root span is finished.

Spans must be started with either StartSpan or Span.StartChild.

func StartSpan 

func StartSpan(ctx context.Context, operation string, options ...SpanOption) *Span

StartSpan starts a new span to describe an operation. The new span will be a child of the last span stored in ctx, if any.

One or more options can be used to modify the span properties. Typically one option as a function literal is enough. Combining multiple options can be useful to define and reuse specific properties with named functions.

Caller should call the Finish method on the span to mark its end. Finishing a root span sends the span and all of its children, recursively, as a transaction to Sentry.

func TransactionFromContext 

func TransactionFromContext(ctx context.Context) *Span

TransactionFromContext returns the root span of the current transaction. It returns nil if no transaction is tracked in the context.

func (*Span) Context 

func (s *Span) Context() context.Context

Context returns the context containing the span.

func (*Span) Finish 

func (s *Span) Finish()

Finish sets the span's end time, unless already set. If the span is the root of a span tree, Finish sends the span tree to Sentry as a transaction.

func (*Span) MarshalJSON 

func (s *Span) MarshalJSON() ([]byte, error)

func (*Span) SetTag 

func (s *Span) SetTag(name, value string)

SetTag sets a tag on the span. It is recommended to use SetTag instead of accessing the tags map directly as SetTag takes care of initializing the map when necessary.

func (*Span) StartChild 

func (s *Span) StartChild(operation string, options ...SpanOption) *Span

StartChild starts a new child span.

The call span.StartChild(operation, options...) is a shortcut for StartSpan(span.Context(), operation, options...).

func (*Span) ToSentryTrace 

func (s *Span) ToSentryTrace() string

ToSentryTrace returns the trace propagation value used with the sentry-trace HTTP header.

type SpanID 

type SpanID [8]byte

SpanID identifies a span.

func (SpanID) Hex 

func (id SpanID) Hex() []byte

func (SpanID) MarshalText 

func (id SpanID) MarshalText() ([]byte, error)

func (SpanID) String 

func (id SpanID) String() string

type SpanOption 

type SpanOption func(s *Span)

A SpanOption is a function that can modify the properties of a span.

func ContinueFromRequest 

func ContinueFromRequest(r *http.Request) SpanOption

ContinueFromRequest returns a span option that updates the span to continue an existing trace. If it cannot detect an existing trace in the request, the span will be left unchanged.

func TransactionName 

func TransactionName(name string) SpanOption

The TransactionName option sets the name of the current transaction.

A span tree has a single transaction name, therefore using this option when starting a span affects the span tree as a whole, potentially overwriting a name set previously.

type SpanStatus 

type SpanStatus uint8

SpanStatus is the status of a span. 

const (
	SpanStatusUndefined SpanStatus = iota
	SpanStatusOK
	SpanStatusCanceled
	SpanStatusUnknown
	SpanStatusInvalidArgument
	SpanStatusDeadlineExceeded
	SpanStatusNotFound
	SpanStatusAlreadyExists
	SpanStatusPermissionDenied
	SpanStatusResourceExhausted
	SpanStatusFailedPrecondition
	SpanStatusAborted
	SpanStatusOutOfRange
	SpanStatusUnimplemented
	SpanStatusInternalError
	SpanStatusUnavailable
	SpanStatusDataLoss
	SpanStatusUnauthenticated
)

func (SpanStatus) MarshalJSON 

func (ss SpanStatus) MarshalJSON() ([]byte, error)

func (SpanStatus) String 

func (ss SpanStatus) String() string

type Stacktrace 

type Stacktrace struct {
	Frames        []Frame `json:"frames,omitempty"`
	FramesOmitted []uint  `json:"frames_omitted,omitempty"`
}

Stacktrace holds information about the frames of the stack.

func ExtractStacktrace 

func ExtractStacktrace(err error) *Stacktrace

ExtractStacktrace creates a new Stacktrace based on the given error.

func NewStacktrace 

func NewStacktrace() *Stacktrace

NewStacktrace creates a stacktrace using runtime.Callers.

type Thread 

type Thread struct {
	ID         string      `json:"id,omitempty"`
	Name       string      `json:"name,omitempty"`
	Stacktrace *Stacktrace `json:"stacktrace,omitempty"`
	Crashed    bool        `json:"crashed,omitempty"`
	Current    bool        `json:"current,omitempty"`
}

Thread specifies threads that were running at the time of an event.

type TraceContext 

type TraceContext struct {
	TraceID      TraceID    `json:"trace_id"`
	SpanID       SpanID     `json:"span_id"`
	ParentSpanID SpanID     `json:"parent_span_id"`
	Op           string     `json:"op,omitempty"`
	Description  string     `json:"description,omitempty"`
	Status       SpanStatus `json:"status,omitempty"`
}

A TraceContext carries information about an ongoing trace and is meant to be stored in Event.Contexts (as *TraceContext).

func (*TraceContext) MarshalJSON 

func (tc *TraceContext) MarshalJSON() ([]byte, error)

type TraceID 

type TraceID [16]byte

TraceID identifies a trace.

func (TraceID) Hex 

func (id TraceID) Hex() []byte

func (TraceID) MarshalText 

func (id TraceID) MarshalText() ([]byte, error)

func (TraceID) String 

func (id TraceID) String() string

type TracesSampler 

type TracesSampler interface {
	Sample(ctx SamplingContext) Sampled
}

A TracesSampler makes sampling decisions for spans.

In addition to the sampling context passed to the Sample method, implementations may keep and use internal state to make decisions.

Sampling is one of the last steps when starting a new span, such that the sampler can inspect most of the state of the span to make a decision.

Implementations must be safe for concurrent use by multiple goroutines.

type TracesSamplerFunc 

type TracesSamplerFunc func(ctx SamplingContext) Sampled

The TracesSamplerFunc type is an adapter to allow the use of ordinary functions as a TracesSampler.

func (TracesSamplerFunc) Sample 

func (f TracesSamplerFunc) Sample(ctx SamplingContext) Sampled

type Transport 

type Transport interface {
	Flush(timeout time.Duration) bool
	Configure(options ClientOptions)
	SendEvent(event *Event)
}

Transport is used by the Client to deliver events to remote server.

type UniformTracesSampler 

type UniformTracesSampler float64

UniformTracesSampler is a TracesSampler that samples root spans randomly at a uniform rate.

func (UniformTracesSampler) Sample 

func (s UniformTracesSampler) Sample(ctx SamplingContext) Sampled

type User 

type User struct {
	Email     string `json:"email,omitempty"`
	ID        string `json:"id,omitempty"`
	IPAddress string `json:"ip_address,omitempty"`
	Username  string `json:"username,omitempty"`
}

User describes the user associated with an Event. If this is used, at least an ID or an IP address should be provided.

Source Files

View all Source files

Directories

Path Synopsis
example
basic
This is an example program that makes an HTTP request and prints response headers.
 This is an example program that makes an HTTP request and prints response headers.
echo
fasthttp
feature-showcase
flush
gin
http
This is an example web server to demonstrate how to instrument error and performance monitoring with Sentry.
 This is an example web server to demonstrate how to instrument error and performance monitoring with Sentry.
iris
martini
multiclient
negroni
recover
recover-repanic
This is an example program that demonstrates an advanced use of the Sentry SDK using Hub, Scope and EventProcessor to recover from runtime panics, report to Sentry filtering specific frames from the stack trace and then letting the program crash as usual.
 This is an example program that demonstrates an advanced use of the Sentry SDK using Hub, Scope and EventProcessor to recover from runtime panics, report to Sentry filtering specific frames from the stack trace and then letting the program crash as usual.
synctransport
with_extra
Package sentryhttp provides Sentry integration for servers based on the net/http package.
 Package sentryhttp provides Sentry integration for servers based on the net/http package.
internal
crypto/randutil
debug
ratelimit
Package ratelimit provides tools to work with rate limits imposed by Sentry's data ingestion pipeline.
 Package ratelimit provides tools to work with rate limits imposed by Sentry's data ingestion pipeline.

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