nightingale-slack-output/src/index.js

Nightingale slack output

/* eslint camelcase: "off" */
import { post } from 'request';
import levels from 'nightingale-levels';

const levelToSlackColor = {
  [levels.TRACE]: '#808080',
  [levels.DEBUG]: '#808080',
  [levels.INFO]: '#808080',
  [levels.WARN]: 'warning',
  [levels.ERROR]: 'danger',
  [levels.CRITICAL]: 'danger',
  [levels.FATAL]: 'danger',
  [levels.EMERGENCY]: 'danger',
};

export default function slackOutput(slackConfig) {
  return function write({ markdown, raw }, { level, message }) {
    const body = {
      channel: slackConfig.channel,
      username: slackConfig.username,
      icon_url: slackConfig.iconUrl,
      icon_emoji: slackConfig.iconEmoji,
      attachments: [
        {
          fallback: raw,
          title: message,
          color: levelToSlackColor[level],
          text: markdown,
          mrkdwn_in: ['text'],
        },
      ],
    };

    post({ url: slackConfig.webhookUrl, body: body, json: true })
            .on('error', (err2) => console.error(err2.stack));
  };
}