mirror of
https://github.com/woodpecker-ci/woodpecker.git
synced 2024-12-26 02:10:31 +00:00
683 lines
18 KiB
Go
683 lines
18 KiB
Go
// Package raven implements a client for the Sentry error logging service.
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package raven
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import (
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"bytes"
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"compress/zlib"
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"crypto/rand"
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"encoding/base64"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"net/url"
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"os"
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"runtime"
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"strings"
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"sync"
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"time"
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)
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const (
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userAgent = "raven-go/1.0"
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timestampFormat = `"2006-01-02T15:04:05"`
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)
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var (
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ErrPacketDropped = errors.New("raven: packet dropped")
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ErrUnableToUnmarshalJSON = errors.New("raven: unable to unmarshal JSON")
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ErrMissingUser = errors.New("raven: dsn missing public key and/or password")
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ErrMissingPrivateKey = errors.New("raven: dsn missing private key")
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ErrMissingProjectID = errors.New("raven: dsn missing project id")
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)
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type Severity string
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// http://docs.python.org/2/howto/logging.html#logging-levels
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const (
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DEBUG = Severity("debug")
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INFO = Severity("info")
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WARNING = Severity("warning")
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ERROR = Severity("error")
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FATAL = Severity("fatal")
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)
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type Timestamp time.Time
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func (t Timestamp) MarshalJSON() ([]byte, error) {
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return []byte(time.Time(t).UTC().Format(timestampFormat)), nil
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}
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func (timestamp *Timestamp) UnmarshalJSON(data []byte) error {
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t, err := time.Parse(timestampFormat, string(data))
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if err != nil {
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return err
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}
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*timestamp = Timestamp(t)
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return nil
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}
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// An Interface is a Sentry interface that will be serialized as JSON.
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// It must implement json.Marshaler or use json struct tags.
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type Interface interface {
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// The Sentry class name. Example: sentry.interfaces.Stacktrace
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Class() string
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}
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type Culpriter interface {
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Culprit() string
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}
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type Transport interface {
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Send(url, authHeader string, packet *Packet) error
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}
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type outgoingPacket struct {
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packet *Packet
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ch chan error
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}
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type Tag struct {
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Key string
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Value string
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}
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type Tags []Tag
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func (tag *Tag) MarshalJSON() ([]byte, error) {
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return json.Marshal([2]string{tag.Key, tag.Value})
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}
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func (t *Tag) UnmarshalJSON(data []byte) error {
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var tag [2]string
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if err := json.Unmarshal(data, &tag); err != nil {
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return err
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}
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*t = Tag{tag[0], tag[1]}
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return nil
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}
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func (t *Tags) UnmarshalJSON(data []byte) error {
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var tags []Tag
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switch data[0] {
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case '[':
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// Unmarshal into []Tag
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if err := json.Unmarshal(data, &tags); err != nil {
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return err
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}
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case '{':
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// Unmarshal into map[string]string
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tagMap := make(map[string]string)
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if err := json.Unmarshal(data, &tagMap); err != nil {
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return err
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}
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// Convert to []Tag
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for k, v := range tagMap {
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tags = append(tags, Tag{k, v})
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}
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default:
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return ErrUnableToUnmarshalJSON
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}
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*t = tags
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return nil
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}
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// http://sentry.readthedocs.org/en/latest/developer/client/index.html#building-the-json-packet
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type Packet struct {
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// Required
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Message string `json:"message"`
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// Required, set automatically by Client.Send/Report via Packet.Init if blank
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EventID string `json:"event_id"`
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Project string `json:"project"`
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Timestamp Timestamp `json:"timestamp"`
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Level Severity `json:"level"`
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Logger string `json:"logger"`
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// Optional
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Platform string `json:"platform,omitempty"`
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Culprit string `json:"culprit,omitempty"`
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ServerName string `json:"server_name,omitempty"`
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Release string `json:"release,omitempty"`
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Tags Tags `json:"tags,omitempty"`
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Modules []map[string]string `json:"modules,omitempty"`
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Extra map[string]interface{} `json:"extra,omitempty"`
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Interfaces []Interface `json:"-"`
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}
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// NewPacket constructs a packet with the specified message and interfaces.
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func NewPacket(message string, interfaces ...Interface) *Packet {
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extra := map[string]interface{}{
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"runtime.Version": runtime.Version(),
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"runtime.NumCPU": runtime.NumCPU(),
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"runtime.GOMAXPROCS": runtime.GOMAXPROCS(0), // 0 just returns the current value
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"runtime.NumGoroutine": runtime.NumGoroutine(),
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}
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return &Packet{
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Message: message,
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Interfaces: interfaces,
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Extra: extra,
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}
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}
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// Init initializes required fields in a packet. It is typically called by
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// Client.Send/Report automatically.
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func (packet *Packet) Init(project string) error {
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if packet.Project == "" {
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packet.Project = project
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}
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if packet.EventID == "" {
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var err error
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packet.EventID, err = uuid()
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if err != nil {
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return err
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}
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}
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if time.Time(packet.Timestamp).IsZero() {
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packet.Timestamp = Timestamp(time.Now())
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}
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if packet.Level == "" {
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packet.Level = ERROR
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}
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if packet.Logger == "" {
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packet.Logger = "root"
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}
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if packet.ServerName == "" {
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packet.ServerName = hostname
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}
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if packet.Platform == "" {
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packet.Platform = "go"
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}
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if packet.Culprit == "" {
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for _, inter := range packet.Interfaces {
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if c, ok := inter.(Culpriter); ok {
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packet.Culprit = c.Culprit()
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if packet.Culprit != "" {
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break
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}
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}
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}
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}
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return nil
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}
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func (packet *Packet) AddTags(tags map[string]string) {
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for k, v := range tags {
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packet.Tags = append(packet.Tags, Tag{k, v})
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}
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}
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func uuid() (string, error) {
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id := make([]byte, 16)
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_, err := io.ReadFull(rand.Reader, id)
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if err != nil {
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return "", err
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}
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id[6] &= 0x0F // clear version
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id[6] |= 0x40 // set version to 4 (random uuid)
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id[8] &= 0x3F // clear variant
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id[8] |= 0x80 // set to IETF variant
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return hex.EncodeToString(id), nil
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}
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func (packet *Packet) JSON() []byte {
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packetJSON, _ := json.Marshal(packet)
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interfaces := make(map[string]Interface, len(packet.Interfaces))
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for _, inter := range packet.Interfaces {
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interfaces[inter.Class()] = inter
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}
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if len(interfaces) > 0 {
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interfaceJSON, _ := json.Marshal(interfaces)
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packetJSON[len(packetJSON)-1] = ','
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packetJSON = append(packetJSON, interfaceJSON[1:]...)
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}
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return packetJSON
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}
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type context struct {
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user *User
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http *Http
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tags map[string]string
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}
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func (c *context) SetUser(u *User) { c.user = u }
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func (c *context) SetHttp(h *Http) { c.http = h }
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func (c *context) SetTags(t map[string]string) {
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if c.tags == nil {
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c.tags = make(map[string]string)
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}
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for k, v := range t {
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c.tags[k] = v
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}
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}
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func (c *context) Clear() {
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c.user = nil
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c.http = nil
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c.tags = nil
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}
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// Return a list of interfaces to be used in appending with the rest
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func (c *context) interfaces() []Interface {
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len, i := 0, 0
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if c.user != nil {
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len++
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}
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if c.http != nil {
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len++
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}
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interfaces := make([]Interface, len)
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if c.user != nil {
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interfaces[i] = c.user
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i++
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}
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if c.http != nil {
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interfaces[i] = c.http
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i++
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}
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return interfaces
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}
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// The maximum number of packets that will be buffered waiting to be delivered.
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// Packets will be dropped if the buffer is full. Used by NewClient.
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var MaxQueueBuffer = 100
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func newClient(tags map[string]string) *Client {
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client := &Client{
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Transport: &HTTPTransport{},
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Tags: tags,
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context: &context{},
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queue: make(chan *outgoingPacket, MaxQueueBuffer),
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}
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go client.worker()
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client.SetDSN(os.Getenv("SENTRY_DSN"))
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return client
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}
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// New constructs a new Sentry client instance
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func New(dsn string) (*Client, error) {
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client := newClient(nil)
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return client, client.SetDSN(dsn)
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}
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// NewWithTags constructs a new Sentry client instance with default tags.
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func NewWithTags(dsn string, tags map[string]string) (*Client, error) {
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client := newClient(tags)
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return client, client.SetDSN(dsn)
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}
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// NewClient constructs a Sentry client and spawns a background goroutine to
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// handle packets sent by Client.Report.
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//
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// Deprecated: use New and NewWithTags instead
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func NewClient(dsn string, tags map[string]string) (*Client, error) {
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client := newClient(tags)
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return client, client.SetDSN(dsn)
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}
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// Client encapsulates a connection to a Sentry server. It must be initialized
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// by calling NewClient. Modification of fields concurrently with Send or after
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// calling Report for the first time is not thread-safe.
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type Client struct {
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Tags map[string]string
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Transport Transport
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// DropHandler is called when a packet is dropped because the buffer is full.
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DropHandler func(*Packet)
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// Context that will get appending to all packets
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context *context
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mu sync.RWMutex
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url string
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projectID string
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authHeader string
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release string
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queue chan *outgoingPacket
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// A WaitGroup to keep track of all currently in-progress captures
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// This is intended to be used with Client.Wait() to assure that
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// all messages have been transported before exiting the process.
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wg sync.WaitGroup
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}
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// Initialize a default *Client instance
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var DefaultClient = newClient(nil)
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// SetDSN updates a client with a new DSN. It safe to call after and
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// concurrently with calls to Report and Send.
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func (client *Client) SetDSN(dsn string) error {
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if dsn == "" {
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return nil
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}
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client.mu.Lock()
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defer client.mu.Unlock()
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uri, err := url.Parse(dsn)
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if err != nil {
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return err
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}
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if uri.User == nil {
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return ErrMissingUser
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}
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publicKey := uri.User.Username()
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secretKey, ok := uri.User.Password()
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if !ok {
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return ErrMissingPrivateKey
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}
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uri.User = nil
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if idx := strings.LastIndex(uri.Path, "/"); idx != -1 {
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client.projectID = uri.Path[idx+1:]
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uri.Path = uri.Path[:idx+1] + "api/" + client.projectID + "/store/"
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}
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if client.projectID == "" {
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return ErrMissingProjectID
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}
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client.url = uri.String()
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client.authHeader = fmt.Sprintf("Sentry sentry_version=4, sentry_key=%s, sentry_secret=%s", publicKey, secretKey)
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return nil
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}
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// Sets the DSN for the default *Client instance
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func SetDSN(dsn string) error { return DefaultClient.SetDSN(dsn) }
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// SetRelease sets the "release" tag.
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func (client *Client) SetRelease(release string) {
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client.mu.Lock()
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defer client.mu.Unlock()
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client.release = release
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}
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// SetRelease sets the "release" tag on the default *Client
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func SetRelease(release string) { DefaultClient.SetRelease(release) }
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func (client *Client) worker() {
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for outgoingPacket := range client.queue {
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client.mu.RLock()
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url, authHeader := client.url, client.authHeader
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client.mu.RUnlock()
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outgoingPacket.ch <- client.Transport.Send(url, authHeader, outgoingPacket.packet)
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client.wg.Done()
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}
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}
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// Capture asynchronously delivers a packet to the Sentry server. It is a no-op
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// when client is nil. A channel is provided if it is important to check for a
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// send's success.
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func (client *Client) Capture(packet *Packet, captureTags map[string]string) (eventID string, ch chan error) {
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if client == nil {
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return
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}
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// Keep track of all running Captures so that we can wait for them all to finish
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// *Must* call client.wg.Done() on any path that indicates that an event was
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// finished being acted upon, whether success or failure
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client.wg.Add(1)
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ch = make(chan error, 1)
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// Merge capture tags and client tags
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packet.AddTags(captureTags)
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packet.AddTags(client.Tags)
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packet.AddTags(client.context.tags)
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// Initialize any required packet fields
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client.mu.RLock()
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projectID := client.projectID
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release := client.release
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client.mu.RUnlock()
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err := packet.Init(projectID)
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if err != nil {
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ch <- err
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client.wg.Done()
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return
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}
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packet.Release = release
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outgoingPacket := &outgoingPacket{packet, ch}
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select {
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case client.queue <- outgoingPacket:
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default:
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// Send would block, drop the packet
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if client.DropHandler != nil {
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client.DropHandler(packet)
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}
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ch <- ErrPacketDropped
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client.wg.Done()
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}
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return packet.EventID, ch
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}
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// Capture asynchronously delivers a packet to the Sentry server with the default *Client.
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// It is a no-op when client is nil. A channel is provided if it is important to check for a
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// send's success.
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func Capture(packet *Packet, captureTags map[string]string) (eventID string, ch chan error) {
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return DefaultClient.Capture(packet, captureTags)
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}
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// CaptureMessage formats and delivers a string message to the Sentry server.
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func (client *Client) CaptureMessage(message string, tags map[string]string, interfaces ...Interface) string {
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if client == nil {
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return ""
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}
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packet := NewPacket(message, append(append(interfaces, client.context.interfaces()...), &Message{message, nil})...)
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eventID, _ := client.Capture(packet, tags)
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return eventID
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}
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// CaptureMessage formats and delivers a string message to the Sentry server with the default *Client
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func CaptureMessage(message string, tags map[string]string, interfaces ...Interface) string {
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return DefaultClient.CaptureMessage(message, tags, interfaces...)
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}
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// CaptureMessageAndWait is identical to CaptureMessage except it blocks and waits for the message to be sent.
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func (client *Client) CaptureMessageAndWait(message string, tags map[string]string, interfaces ...Interface) string {
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if client == nil {
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return ""
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}
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packet := NewPacket(message, append(append(interfaces, client.context.interfaces()...), &Message{message, nil})...)
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eventID, ch := client.Capture(packet, tags)
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<-ch
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return eventID
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}
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// CaptureMessageAndWait is identical to CaptureMessage except it blocks and waits for the message to be sent.
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func CaptureMessageAndWait(message string, tags map[string]string, interfaces ...Interface) string {
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return DefaultClient.CaptureMessageAndWait(message, tags, interfaces...)
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}
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// CaptureErrors formats and delivers an error to the Sentry server.
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// Adds a stacktrace to the packet, excluding the call to this method.
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func (client *Client) CaptureError(err error, tags map[string]string, interfaces ...Interface) string {
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if client == nil {
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return ""
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}
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packet := NewPacket(err.Error(), append(append(interfaces, client.context.interfaces()...), NewException(err, NewStacktrace(1, 3, nil)))...)
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eventID, _ := client.Capture(packet, tags)
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return eventID
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}
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// CaptureErrors formats and delivers an error to the Sentry server using the default *Client.
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// Adds a stacktrace to the packet, excluding the call to this method.
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func CaptureError(err error, tags map[string]string, interfaces ...Interface) string {
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return DefaultClient.CaptureError(err, tags, interfaces...)
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}
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// CaptureErrorAndWait is identical to CaptureError, except it blocks and assures that the event was sent
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func (client *Client) CaptureErrorAndWait(err error, tags map[string]string, interfaces ...Interface) string {
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if client == nil {
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return ""
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}
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packet := NewPacket(err.Error(), append(append(interfaces, client.context.interfaces()...), NewException(err, NewStacktrace(1, 3, nil)))...)
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eventID, ch := client.Capture(packet, tags)
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<-ch
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return eventID
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}
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// CaptureErrorAndWait is identical to CaptureError, except it blocks and assures that the event was sent
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func CaptureErrorAndWait(err error, tags map[string]string, interfaces ...Interface) string {
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return DefaultClient.CaptureErrorAndWait(err, tags, interfaces...)
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}
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// CapturePanic calls f and then recovers and reports a panic to the Sentry server if it occurs.
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func (client *Client) CapturePanic(f func(), tags map[string]string, interfaces ...Interface) {
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// Note: This doesn't need to check for client, because we still want to go through the defer/recover path
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// Down the line, Capture will be noop'd, so while this does a _tiny_ bit of overhead constructing the
|
|
// *Packet just to be thrown away, this should not be the normal case. Could be refactored to
|
|
// be completely noop though if we cared.
|
|
defer func() {
|
|
var packet *Packet
|
|
switch rval := recover().(type) {
|
|
case nil:
|
|
return
|
|
case error:
|
|
packet = NewPacket(rval.Error(), append(append(interfaces, client.context.interfaces()...), NewException(rval, NewStacktrace(2, 3, nil)))...)
|
|
default:
|
|
rvalStr := fmt.Sprint(rval)
|
|
packet = NewPacket(rvalStr, append(append(interfaces, client.context.interfaces()...), NewException(errors.New(rvalStr), NewStacktrace(2, 3, nil)))...)
|
|
}
|
|
|
|
client.Capture(packet, tags)
|
|
}()
|
|
|
|
f()
|
|
}
|
|
|
|
// CapturePanic calls f and then recovers and reports a panic to the Sentry server if it occurs.
|
|
func CapturePanic(f func(), tags map[string]string, interfaces ...Interface) {
|
|
DefaultClient.CapturePanic(f, tags, interfaces...)
|
|
}
|
|
|
|
func (client *Client) Close() {
|
|
close(client.queue)
|
|
}
|
|
|
|
func Close() { DefaultClient.Close() }
|
|
|
|
// Wait blocks and waits for all events to finish being sent to Sentry server
|
|
func (client *Client) Wait() {
|
|
client.wg.Wait()
|
|
}
|
|
|
|
// Wait blocks and waits for all events to finish being sent to Sentry server
|
|
func Wait() { DefaultClient.Wait() }
|
|
|
|
func (client *Client) URL() string {
|
|
client.mu.RLock()
|
|
defer client.mu.RUnlock()
|
|
|
|
return client.url
|
|
}
|
|
|
|
func URL() string { return DefaultClient.URL() }
|
|
|
|
func (client *Client) ProjectID() string {
|
|
client.mu.RLock()
|
|
defer client.mu.RUnlock()
|
|
|
|
return client.projectID
|
|
}
|
|
|
|
func ProjectID() string { return DefaultClient.ProjectID() }
|
|
|
|
func (client *Client) Release() string {
|
|
client.mu.RLock()
|
|
defer client.mu.RUnlock()
|
|
|
|
return client.release
|
|
}
|
|
|
|
func Release() string { return DefaultClient.Release() }
|
|
|
|
func (c *Client) SetUserContext(u *User) { c.context.SetUser(u) }
|
|
func (c *Client) SetHttpContext(h *Http) { c.context.SetHttp(h) }
|
|
func (c *Client) SetTagsContext(t map[string]string) { c.context.SetTags(t) }
|
|
func (c *Client) ClearContext() { c.context.Clear() }
|
|
|
|
func SetUserContext(u *User) { DefaultClient.SetUserContext(u) }
|
|
func SetHttpContext(h *Http) { DefaultClient.SetHttpContext(h) }
|
|
func SetTagsContext(t map[string]string) { DefaultClient.SetTagsContext(t) }
|
|
func ClearContext() { DefaultClient.ClearContext() }
|
|
|
|
// HTTPTransport is the default transport, delivering packets to Sentry via the
|
|
// HTTP API.
|
|
type HTTPTransport struct {
|
|
Http http.Client
|
|
}
|
|
|
|
func (t *HTTPTransport) Send(url, authHeader string, packet *Packet) error {
|
|
if url == "" {
|
|
return nil
|
|
}
|
|
|
|
body, contentType := serializedPacket(packet)
|
|
req, _ := http.NewRequest("POST", url, body)
|
|
req.Header.Set("X-Sentry-Auth", authHeader)
|
|
req.Header.Set("User-Agent", userAgent)
|
|
req.Header.Set("Content-Type", contentType)
|
|
res, err := t.Http.Do(req)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
io.Copy(ioutil.Discard, res.Body)
|
|
res.Body.Close()
|
|
if res.StatusCode != 200 {
|
|
return fmt.Errorf("raven: got http status %d", res.StatusCode)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func serializedPacket(packet *Packet) (r io.Reader, contentType string) {
|
|
packetJSON := packet.JSON()
|
|
|
|
// Only deflate/base64 the packet if it is bigger than 1KB, as there is
|
|
// overhead.
|
|
if len(packetJSON) > 1000 {
|
|
buf := &bytes.Buffer{}
|
|
b64 := base64.NewEncoder(base64.StdEncoding, buf)
|
|
deflate, _ := zlib.NewWriterLevel(b64, zlib.BestCompression)
|
|
deflate.Write(packetJSON)
|
|
deflate.Close()
|
|
b64.Close()
|
|
return buf, "application/octet-stream"
|
|
}
|
|
return bytes.NewReader(packetJSON), "application/json"
|
|
}
|
|
|
|
var hostname string
|
|
|
|
func init() {
|
|
hostname, _ = os.Hostname()
|
|
}
|