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notification.js
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notification.js
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console.log('Lyssna: An Amazon SNS trigger that logs the message pushed to the SNS topic.')
var _ = require('underscore')
var util = require('util')
var AwsLib = require('./lib/aws.js')
var HipchatLib = require('./lib/hipchat.js')
var NewrelicLib = require('./lib/newrelic.js')
var PagerdutyLib = require('./lib/pagerduty.js')
var SlackLib = require('./lib/slack.js')
var Promise = require('promise')
var appConfig = require('./config/app.json')
exports.handler = function (event, context) {
var awsHelper = new AwsLib(context)
var getRevisionData = function (snsMessage) {
var deploymentId = snsMessage.deploymentId
var awsRequest = awsHelper.getDeploymentDetails(deploymentId)
return awsRequest.then(function (deployment) {
return deployment.deploymentInfo.revision
}).catch(function (err) {
context.fail(util.format('S3 Bucket error: "%s"', err))
})
}
var getRevisionNumber = function (regexp, revision, deploymentId) {
switch (revision.revisionType) {
case 'S3':
return parseS3Key(regexp, revision.s3Location)
case 'GitHub':
return revision.gitHubLocation.commitId
default:
console.warn(util.format('No matching revisionType "%s" for deploymentId "%s"', revision.revisionType, deploymentId))
return
}
}
var getMetaTagsForS3Key = function (revision, deploymentId) {
switch (revision.revisionType) {
case 'S3':
return awsHelper.getMetaTags(revision.s3Location)
case 'GitHub':
console.warn(util.format('Need to implement github api to get commit information for SHA.'))
return new Promise()
default:
console.warn(util.format('No matching revisionType "%s" for deploymentId "%s"', revision.revisionType, deploymentId))
return
}
}
var parseS3Key = function (regexp, s3Location) {
var re = new RegExp(regexp, 'g');
var m
var revision
if ((m = re.exec(s3Location.key)) !== null) {
if (m.index === re.lastIndex) {
re.lastIndex++
}
revision = m[0]
return revision
} else { //Return the s3Location.key if no match on regexp
return s3Location.key;
}
console.warn(util.format('No revision found for s3Location: "%s"', s3Location.key))
return
}
var getTrigger = function (snsMessage) {
var configs = []
_.each(appConfig.snsEventTriggers, function (config) {
var re = new RegExp(config.name, 'g')
var m
if ((m = re.exec(snsMessage.eventTriggerName)) !== null) {
if (m.index === re.lastIndex) {
re.lastIndex++
}
configs.push(config)
}
})
if (configs.length === 0) {
context.fail(util.format('Unsupported sns event trigger name: %s', snsMessage.eventTriggerName))
return
}
return configs
}
if (!event.Records) {
context.fail(util.format('No records in event: %s', event))
return
}
_.each(event.Records, function (record) {
if (!record.Sns) {
context.fail(util.format('No Sns in record for event: %s', event))
return
}
if (!record.Sns.Message) {
context.fail(util.format('No Message in Sns record for event: %s', event))
return
}
console.log('Sns', record.Sns)
console.log('Sns.Message', JSON.parse(record.Sns.Message))
var sns = record.Sns
var snsMessage = JSON.parse(sns.Message)
var triggers = getTrigger(snsMessage)
var deploymentId = snsMessage.deploymentId
if (triggers && triggers.length > 0) {
console.log(util.format('Found triggers: %s', JSON.stringify(triggers)))
}
var revisionPromise = getRevisionData(snsMessage)
_.each(triggers, function (trigger) {
_.each(trigger.channels, function (channel, key) {
switch (key) {
case 'hipchat':
var hipchatConfigPromise = awsHelper.getNotificationConfig(channel.s3)
Promise.all([hipchatConfigPromise, revisionPromise]).then(function (values) {
var hipchatApi = new HipchatLib(values[0], context)
var revision = getRevisionNumber(trigger.revisionRegexp, values[1], deploymentId)
var metaTagsPromise = getMetaTagsForS3Key(values[1], deploymentId)
metaTagsPromise.then(function (metaTags) {
// Function call below can be a callback.
hipchatApi.sendNotification(snsMessage, revision, metaTags.user)
}).catch(function (err) {
context.fail(util.format('Error: "%s"', err))
})
}).catch(function (err) {
context.fail(util.format('Error: "%s"', err))
})
break
case 'newrelic':
var newrelicConfigPromise = awsHelper.getNotificationConfig(channel.s3)
Promise.all([newrelicConfigPromise, revisionPromise]).then(function (values) {
var newrelicApi = new NewrelicLib(values[0], context)
var revision = getRevisionNumber(trigger.revisionRegexp, values[1], deploymentId)
var metaTagsPromise = getMetaTagsForS3Key(values[1], deploymentId)
metaTagsPromise.then(function (metaTags) {
// Function call below can be a callback.
newrelicApi.recordDeploymentToNewrelic(sns, metaTags.user || '', revision)
}).catch(function (err) {
context.fail(util.format('Error: "%s"', err))
})
}).catch(function (err) {
context.fail(util.format('Error: "%s"', err))
})
break
case 'pagerduty':
var pagerdutyConfigPromise = awsHelper.getNotificationConfig(channel.s3)
Promise.all([pagerdutyConfigPromise, revisionPromise]).then(function (values) {
var pagerdutyLib = new PagerdutyLib(values[0], context)
var revision = getRevisionNumber(trigger.revisionRegexp, values[1], deploymentId)
var metaTagsPromise = getMetaTagsForS3Key(values[1], deploymentId)
metaTagsPromise.then(function (metaTags) {
// Function call below can be a callback.
pagerdutyLib.triggerPagerDutyAlert(sns, metaTags.user || '', revision)
}).catch(function (err) {
context.fail(util.format('Error: "%s"', err))
})
}).catch(function (err) {
context.fail(util.format('Error: "%s"', err))
})
break
case 'slack':
var slackConfigPromise = awsHelper.getNotificationConfig(channel.s3)
Promise.all([slackConfigPromise, revisionPromise]).then(function (values) {
var slackLib = new SlackLib(values[0], context)
var revision = getRevisionNumber(trigger.revisionRegexp, values[1], deploymentId)
var metaTagsPromise = getMetaTagsForS3Key(values[1], deploymentId)
metaTagsPromise.then(function (metaTags) {
// Function call below can be a callback.
slackLib.postMessage(snsMessage, metaTags.user || '', revision)
}).catch(function (err) {
context.fail(util.format('Error: "%s"', err))
})
}).catch(function (err) {
context.fail(util.format('Error: "%s"', err))
})
break
default:
context.fail(util.format('Unsupported notification channel: %s', key))
}
})
})
})
}