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118 lines
2.6 KiB
Go
118 lines
2.6 KiB
Go
package slacknotifier
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import (
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"context"
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"fmt"
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log "github.com/sirupsen/logrus"
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"github.com/slack-go/slack"
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)
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type SlackAttachmentCreator interface {
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SlackAttachment() slack.Attachment
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}
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type Notifier struct {
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client *slack.Client
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channel string
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}
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type NotifyOption func(notifier *Notifier)
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func New(token, channel string, options ...NotifyOption) *Notifier {
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// var client = slack.New(token, slack.OptionDebug(true))
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var client = slack.New(token)
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notifier := &Notifier{
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channel: channel,
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client: client,
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}
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for _, o := range options {
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o(notifier)
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}
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return notifier
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}
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func (n *Notifier) Notify(format string, args ...interface{}) {
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n.NotifyTo(n.channel, format, args...)
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}
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func (n *Notifier) NotifyTo(channel, format string, args ...interface{}) {
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if len(channel) == 0 {
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channel = n.channel
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}
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var slackAttachments []slack.Attachment
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var slackArgsOffset = -1
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for idx, arg := range args {
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switch a := arg.(type) {
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// concrete type assert first
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case slack.Attachment:
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if slackArgsOffset == -1 {
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slackArgsOffset = idx
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}
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slackAttachments = append(slackAttachments, a)
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case SlackAttachmentCreator:
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if slackArgsOffset == -1 {
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slackArgsOffset = idx
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}
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slackAttachments = append(slackAttachments, a.SlackAttachment())
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}
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}
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var nonSlackArgs = args
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if slackArgsOffset > -1 {
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nonSlackArgs = args[:slackArgsOffset]
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}
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_, _, err := n.client.PostMessageContext(context.Background(), channel,
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slack.MsgOptionText(fmt.Sprintf(format, nonSlackArgs...), true),
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slack.MsgOptionAttachments(slackAttachments...))
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if err != nil {
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log.WithError(err).
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WithField("channel", channel).
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Errorf("slack error: %s", err.Error())
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}
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return
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}
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/*
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func (n *Notifier) NotifyTrade(trade *types.Trade) {
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_, _, err := n.client.PostMessageContext(context.Background(), n.TradeChannel,
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slack.MsgOptionText(util.Render(`:handshake: {{ .Symbol }} {{ .Side }} Trade Execution @ {{ .Price }}`, trade), true),
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slack.MsgOptionAttachments(trade.SlackAttachment()))
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if err != nil {
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logrus.WithError(err).Error("slack send error")
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}
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}
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*/
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/*
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func (n *Notifier) NotifyPnL(report *pnl.AverageCostPnlReport) {
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attachment := report.SlackAttachment()
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_, _, err := n.client.PostMessageContext(context.Background(), n.PnlChannel,
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slack.MsgOptionText(util.Render(
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`:heavy_dollar_sign: Here is your *{{ .symbol }}* PnL report collected since *{{ .startTime }}*`,
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map[string]interface{}{
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"symbol": report.Symbol,
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"startTime": report.StartTime.Format(time.RFC822),
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}), true),
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slack.MsgOptionAttachments(attachment))
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if err != nil {
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logrus.WithError(err).Errorf("slack send error")
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}
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}
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*/
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