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test_monitor.js
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test_monitor.js
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const chai = require('chai')
const chaiHttp = require('chai-http')
const { Monitor } = require('../dist/')
const app = require('./app_test')
const axios = require('axios');
chai.use(chaiHttp)
const expect = chai.expect
chai.should()
describe('Collect metrics middleware', () => {
it('should collect metric from basic route - GET', () => {
chai.request(app)
.get('/test')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="200",method="GET",addr="/test",isError="false",errorMessage=""} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="200",method="GET",addr="/test",isError="false",errorMessage=""}')
expect(res.text).to.include('request_seconds_count{type="http",status="200",method="GET",addr="/test",isError="false",errorMessage=""} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="200",method="GET",addr="/test",isError="false",errorMessage=""}')
})
})
it('should collect metric from basic route - POST', () => {
chai.request(app)
.post('/test')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="200",method="POST",addr="/test",isError="false",errorMessage=""} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="200",method="POST",addr="/test",isError="false",errorMessage=""}')
expect(res.text).to.include('request_seconds_count{type="http",status="200",method="POST",addr="/test",isError="false",errorMessage=""} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="200",method="POST",addr="/test",isError="false",errorMessage=""}')
})
})
it('should collect metric from express.Router', () => {
chai.request(app)
.get('/router/testRouter')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="200",method="GET",addr="/router/testRouter",isError="false",errorMessage=""} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="200",method="GET",addr="/router/testRouter",isError="false",errorMessage=""}')
expect(res.text).to.include('request_seconds_count{type="http",status="200",method="GET",addr="/router/testRouter",isError="false",errorMessage=""} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="200",method="GET",addr="/router/testRouter",isError="false",errorMessage=""}')
})
})
it('should collect metric ignoring query string', () => {
chai.request(app)
.get('/test?param')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="200",method="GET",addr="/test",isError="false",errorMessage=""} 2')
expect(res.text).to.include('request_seconds_sum{type="http",status="200",method="GET",addr="/test",isError="false",errorMessage=""}')
expect(res.text).to.include('request_seconds_count{type="http",status="200",method="GET",addr="/test",isError="false",errorMessage=""} 2')
expect(res.text).to.include('response_size_bytes{type="http",status="200",method="GET",addr="/test",isError="false",errorMessage=""}')
})
})
it('should collect metric with error message', () => {
chai.request(app)
.get('/testWithErrorMessage')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="400",method="GET",addr="/testWithErrorMessage",isError="true",errorMessage="Test Error Message"} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="400",method="GET",addr="/testWithErrorMessage",isError="true",errorMessage="Test Error Message"}')
expect(res.text).to.include('request_seconds_count{type="http",status="400",method="GET",addr="/testWithErrorMessage",isError="true",errorMessage="Test Error Message"} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="400",method="GET",addr="/testWithErrorMessage",isError="true",errorMessage="Test Error Message"}')
})
})
it('should use the original registered path in addr label when registered with express.Router - success response', () => {
chai.request(app)
.get('/router/testPath/pathParameter')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="200",method="GET",addr="/router/testPath/:parameter",isError="false",errorMessage=""} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="200",method="GET",addr="/router/testPath/:parameter",isError="false",errorMessage=""}')
expect(res.text).to.include('request_seconds_count{type="http",status="200",method="GET",addr="/router/testPath/:parameter",isError="false",errorMessage=""} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="200",method="GET",addr="/router/testPath/:parameter",isError="false",errorMessage=""}')
})
})
it('should use the original registered path in addr label when registered with express.Router - error response', () => {
chai.request(app)
.post('/router/testPath/pathParameter1/action/pathParameter2')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="400",method="POST",addr="/router/testPath/:parameter1/action/:parameter2",isError="true",errorMessage="Test Error Message: param1=pathParameter1 , param2=pathParameter2"} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="400",method="POST",addr="/router/testPath/:parameter1/action/:parameter2",isError="true",errorMessage="Test Error Message: param1=pathParameter1 , param2=pathParameter2"}')
expect(res.text).to.include('request_seconds_count{type="http",status="400",method="POST",addr="/router/testPath/:parameter1/action/:parameter2",isError="true",errorMessage="Test Error Message: param1=pathParameter1 , param2=pathParameter2"} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="400",method="POST",addr="/router/testPath/:parameter1/action/:parameter2",isError="true",errorMessage="Test Error Message: param1=pathParameter1 , param2=pathParameter2"}')
})
})
it('should use the original registered path in addr label when registered with basic router - success response', () => {
chai.request(app)
.get('/testPathParameter/pathParameterValue')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="200",method="GET",addr="/testPathParameter/:parameter",isError="false",errorMessage=""} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="200",method="GET",addr="/testPathParameter/:parameter",isError="false",errorMessage=""}')
expect(res.text).to.include('request_seconds_count{type="http",status="200",method="GET",addr="/testPathParameter/:parameter",isError="false",errorMessage=""} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="200",method="GET",addr="/testPathParameter/:parameter",isError="false",errorMessage=""}')
})
})
it('should use the original registered path in addr label when registered with basic router - error response', () => {
chai.request(app)
.post('/testPathParameter/pathParameter1/pathParameter2')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="400",method="POST",addr="/testPathParameter/:param1/:param2",isError="true",errorMessage="Test Error Message: param1=pathParameter1 , param2=pathParameter2"} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="400",method="POST",addr="/testPathParameter/:param1/:param2",isError="true",errorMessage="Test Error Message: param1=pathParameter1 , param2=pathParameter2"}')
expect(res.text).to.include('request_seconds_count{type="http",status="400",method="POST",addr="/testPathParameter/:param1/:param2",isError="true",errorMessage="Test Error Message: param1=pathParameter1 , param2=pathParameter2"} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="400",method="POST",addr="/testPathParameter/:param1/:param2",isError="true",errorMessage="Test Error Message: param1=pathParameter1 , param2=pathParameter2"}')
})
})
it('should use the original requested URL in addr label and status 404 when there is no registered route for requested URL', async () => {
chai.request(app)
.post('/app/unregistered-path')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
await chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="404",method="POST",addr="/app/unregistered-path",isError="true",errorMessage=""} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="404",method="POST",addr="/app/unregistered-path",isError="true",errorMessage=""}')
expect(res.text).to.include('request_seconds_count{type="http",status="404",method="POST",addr="/app/unregistered-path",isError="true",errorMessage=""} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="404",method="POST",addr="/app/unregistered-path",isError="true",errorMessage=""}')
})
})
it('should use the original requested URL (without query string parameters) in addr label and status 404 when there is no registered route for requested URL', async () => {
chai.request(app)
.post('/unregistered-path-with-query-string?param=paramValue&name=Jhon&surname=Doe')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
await chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="404",method="POST",addr="/unregistered-path-with-query-string",isError="true",errorMessage=""} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="404",method="POST",addr="/unregistered-path-with-query-string",isError="true",errorMessage=""}')
expect(res.text).to.include('request_seconds_count{type="http",status="404",method="POST",addr="/unregistered-path-with-query-string",isError="true",errorMessage=""} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="404",method="POST",addr="/unregistered-path-with-query-string",isError="true",errorMessage=""}')
})
})
it('should collect depedency metric', async() => {
const start = process.hrtime()
const response = await axios.get('http://google.com/')
const { method, path } = response.request
Monitor.collectDependencyTime("Google", "axios", response.status, method, path, "", start)
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('dependency_request_seconds_bucket{le="0.1",name="Google",type="axios",status="200",method="GET",addr="/",isError="false",errorMessage=""}')
expect(res.text).to.include('dependency_request_seconds_bucket{le="0.3",name="Google",type="axios",status="200",method="GET",addr="/",isError="false",errorMessage=""}')
expect(res.text).to.include('dependency_request_seconds_bucket{le="1.5",name="Google",type="axios",status="200",method="GET",addr="/",isError="false",errorMessage=""}')
expect(res.text).to.include('dependency_request_seconds_bucket{le="10.5",name="Google",type="axios",status="200",method="GET",addr="/",isError="false",errorMessage=""}')
expect(res.text).to.include('dependency_request_seconds_bucket{le="+Inf",name="Google",type="axios",status="200",method="GET",addr="/",isError="false",errorMessage=""} 1')
expect(res.text).to.include('dependency_request_seconds_sum{name="Google",type="axios",status="200",method="GET",addr="/",isError="false",errorMessage=""}')
expect(res.text).to.include('dependency_request_seconds_count{name="Google",type="axios",status="200",method="GET",addr="/",isError="false",errorMessage=""} 1')
})
});
it('should set isError to false when not contains error message - collectDependencyTime', async() => {
const start = process.hrtime()
Monitor.collectDependencyTime("dependencyNameTest", "fooType", 304, "GET", "/test", "", start)
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('dependency_request_seconds_bucket{le="0.1",name="dependencyNameTest",type="fooType",status="304",method="GET",addr="/test",isError="false",errorMessage=""}')
expect(res.text).to.include('dependency_request_seconds_sum{name="dependencyNameTest",type="fooType",status="304",method="GET",addr="/test",isError="false",errorMessage=""}')
expect(res.text).to.include('dependency_request_seconds_count{name="dependencyNameTest",type="fooType",status="304",method="GET",addr="/test",isError="false",errorMessage=""} 1')
})
})
it('should set isError to true when contains error message - collectDependencyTime', async() => {
const start = process.hrtime()
const errorMessage = "Foo error"
Monitor.collectDependencyTime("dependencyNameTest", "fooType", 304, "GET", "/test", errorMessage, start)
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('dependency_request_seconds_bucket{le="0.1",name="dependencyNameTest",type="fooType",status="304",method="GET",addr="/test",isError="true",errorMessage="Foo error"}')
expect(res.text).to.include('dependency_request_seconds_sum{name="dependencyNameTest",type="fooType",status="304",method="GET",addr="/test",isError="true",errorMessage="Foo error"}')
expect(res.text).to.include('dependency_request_seconds_count{name="dependencyNameTest",type="fooType",status="304",method="GET",addr="/test",isError="true",errorMessage="Foo error"} 1')
})
})
it('should collect non express request', async () => {
const start = process.hrtime();
const fakeInternalProcess = await new Promise(resolve => setTimeout(resolve, 50));
Monitor.collectRequestTime('amqp', 200, 'queue_to_test', start);
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="amqp",status="200",method="",addr="queue_to_test",isError="false",errorMessage=""} 1');
expect(res.text).to.include('request_seconds_sum{type="amqp",status="200",method="",addr="queue_to_test",isError="false",errorMessage=""}');
expect(res.text).to.include('request_seconds_count{type="amqp",status="200",method="",addr="queue_to_test",isError="false",errorMessage=""} 1');
})
});
it('should collect non express request with error', async () => {
const start = process.hrtime();
try{
await new Promise((_, reject) => setTimeout(() => reject('dummy error'), 30));
}catch (err) {
Monitor.collectRequestTime('amqp', 500, 'queue_to_test', start, err)
}
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="amqp",status="500",method="",addr="queue_to_test",isError="true",errorMessage="dummy error"} 1');
expect(res.text).to.include('request_seconds_sum{type="amqp",status="500",method="",addr="queue_to_test",isError="true",errorMessage="dummy error"}');
expect(res.text).to.include('request_seconds_count{type="amqp",status="500",method="",addr="queue_to_test",isError="true",errorMessage="dummy error"} 1');
})
})
it('should collect swagger-express-middleware metrics', () => {
chai.request(app)
.get('/users/123')
.set('Content-Type', 'application/json')
.send()
.end((err) => {
if(err) console.log(err)
})
chai.request(app)
.get('/metrics')
.set('Content-Type', 'application/json')
.send()
.end((err, res) => {
expect(res.text).to.include('request_seconds_bucket{le="0.1",type="http",status="200",method="GET",addr="/users/{userId}",isError="false",errorMessage=""} 1')
expect(res.text).to.include('request_seconds_sum{type="http",status="200",method="GET",addr="/users/{userId}",isError="false",errorMessage=""}')
expect(res.text).to.include('request_seconds_count{type="http",status="200",method="GET",addr="/users/{userId}",isError="false",errorMessage=""} 1')
expect(res.text).to.include('response_size_bytes{type="http",status="200",method="GET",addr="/users/{userId}",isError="false",errorMessage=""}')
})
})
});