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index.spec.js
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index.spec.js
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'use strict'
const getPort = require('get-port')
const agent = require('../../dd-trace/test/plugins/agent')
const { expectSomeSpan } = require('../../dd-trace/test/plugins/helpers')
const { Int64BE } = require('int64-buffer') // TODO remove dependency
describe('Plugin', () => {
let net
let tcp
let ipc
let port
let tracer
let parent
describe('net', () => {
afterEach(() => {
return agent.close()
})
afterEach(() => {
tcp.close()
})
afterEach(() => {
ipc.close()
})
beforeEach(() => {
return agent.load('net')
.then(() => {
net = require(`net`)
tracer = require('../../dd-trace')
parent = tracer.startSpan('parent')
parent.finish()
return getPort()
}).then(_port => {
port = _port
return new Promise(resolve => setImmediate(resolve))
})
})
beforeEach(done => {
tcp = new net.Server(socket => {
socket.write('')
})
tcp.listen(port, () => done())
})
beforeEach(done => {
ipc = new net.Server(socket => {
socket.write('')
})
ipc.listen('/tmp/dd-trace.sock', () => done())
})
it('should instrument connect with a path', done => {
expectSomeSpan(agent, {
name: 'ipc.connect',
service: 'test',
resource: '/tmp/dd-trace.sock',
meta: {
'span.kind': 'client',
'ipc.path': '/tmp/dd-trace.sock'
},
parent_id: new Int64BE(parent.context()._spanId._buffer)
}).then(done).catch(done)
tracer.scope().activate(parent, () => {
net.connect('/tmp/dd-trace.sock')
})
})
it('should instrument connect with a port', done => {
const socket = new net.Socket()
tracer.scope().activate(parent, () => {
socket.connect(port, 'localhost')
socket.on('connect', () => {
expectSomeSpan(agent, {
name: 'tcp.connect',
service: 'test',
resource: `localhost:${port}`,
meta: {
'span.kind': 'client',
'tcp.family': 'IPv4',
'tcp.remote.host': 'localhost',
'tcp.local.address': '127.0.0.1',
'out.host': 'localhost'
},
metrics: {
'out.port': port,
'tcp.remote.port': port,
'tcp.local.port': socket.localPort
},
parent_id: new Int64BE(parent.context()._spanId._buffer)
}, 2000).then(done).catch(done)
})
})
})
it('should instrument connect with TCP options', done => {
const socket = new net.Socket()
tracer.scope().activate(parent, () => {
socket.connect({
port,
host: 'localhost'
})
socket.on('connect', () => {
expectSomeSpan(agent, {
name: 'tcp.connect',
service: 'test',
resource: `localhost:${port}`,
meta: {
'span.kind': 'client',
'tcp.family': 'IPv4',
'tcp.remote.host': 'localhost',
'tcp.local.address': '127.0.0.1',
'out.host': 'localhost'
},
metrics: {
'out.port': port,
'tcp.remote.port': port,
'tcp.local.port': socket.localPort
},
parent_id: new Int64BE(parent.context()._spanId._buffer)
}).then(done).catch(done)
})
})
})
it('should instrument connect with IPC options', done => {
expectSomeSpan(agent, {
name: 'ipc.connect',
service: 'test',
resource: '/tmp/dd-trace.sock',
meta: {
'span.kind': 'client',
'ipc.path': '/tmp/dd-trace.sock'
},
parent_id: new Int64BE(parent.context()._spanId._buffer)
}).then(done).catch(done)
tracer.scope().activate(parent, () => {
net.connect({
path: '/tmp/dd-trace.sock'
})
})
})
it('should instrument error', done => {
const socket = new net.Socket()
let error = null
agent
.use(traces => {
expect(traces[0][0]).to.deep.include({
name: 'tcp.connect',
service: 'test',
resource: `localhost:${port}`
})
expect(traces[0][0].meta).to.deep.include({
'span.kind': 'client',
'tcp.family': 'IPv4',
'tcp.remote.host': 'localhost',
'out.host': 'localhost',
'error.type': error.name,
'error.msg': error.message,
'error.stack': error.stack
})
expect(traces[0][0].metrics).to.deep.include({
'out.port': port,
'tcp.remote.port': port
})
expect(traces[0][0].parent_id.toString()).to.equal(parent.context().toSpanId())
})
.then(done)
.catch(done)
tracer.scope().activate(parent, () => {
tcp.close()
socket.connect({ port })
socket.once('error', (err) => {
error = err
})
})
})
it('should cleanup event listeners when the socket changes state', done => {
const socket = new net.Socket()
tracer.scope().activate(parent, () => {
const events = ['connect', 'error', 'close', 'timeout']
socket.connect({ port })
socket.destroy()
socket.once('close', () => {
expect(socket.eventNames()).to.not.include.members(events)
done()
})
})
})
it('should run event listeners in the correct scope', done => {
const socket = new net.Socket()
socket.connect({ port,
lookup: function () {
expect(tracer.scope().active()).to.not.be.null
expect(tracer.scope().active()._spanContext._name).to.equal('tcp.connect')
done()
} })
socket.destroy()
})
it('should run the connection callback in the correct scope', done => {
const socket = new net.Socket()
tracer.scope().activate(parent, () => {
socket.connect({ port }, function () {
expect(this).to.equal(socket)
expect(tracer.scope().active()).to.equal(parent)
socket.destroy()
done()
})
})
})
})
})