DataDog/apm-toy-app

Name: apm-toy-app

Owner: Datadog, Inc.

Description: A simple dockerized app to trace.

Forked from: gabsn/apm-toy-app

Created: 2017-08-18 16:04:07.0

Updated: 2017-08-18 16:04:09.0

Pushed: 2017-08-16 16:02:47.0

Homepage:

Size: 1621

Language: PLpgSQL

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README

apm-toy-app

A simple app to trace.

Prerequisites

1. Install docker and docker-compose (you can try sudo pip install docker-compose)
2. (Optional) Install go and its dependency management tool
3. You need a Datadog account. If you don't have one, just use the free trial.

Get the app running

1. Get your Datadog API key (Integrations > APIs in the app) and paste it here

Note: each time you'll change your API key, you'll need to rebuild the datadog-agent docker image.

1. Get your Datadog API key (Integrations > APIs) and paste it here

2. Run the app

   er-compose up
   

   This command should launch a minimal golang server along with redis, postgres and the datadog-agent.

3. Go to http://localhost:8080/, you should get something like that:

    hits) - City: Utrecht, 234323 inhabitants
   

   Each time you hit this URL, the golang server will return a different city and its population from postgres and will also tell you how many times you hit this endpoint.

Check the datadog-agent status

1. Connect to the container running the datadog-agent

   er exec -it apmtoyapp_datadog_1 bash
   

2. Run the info command of the agent

   ice datadog-agent info
   

3. Check that postgres and redis are properly reporting metrics

   ks
   ==
   
   gres (5.16.0)
   -------------
   instance #0 [OK]
   Collected 15 metrics, 0 events & 1 service check
   
   sdb (5.16.0)
   ------------
   instance #0 [OK]
   Collected 36 metrics, 0 events & 1 service check
   Dependencies:
     - redis: 2.10.5
   

4. Go in the Datadog app, Metrics > Explorer and check you can see your metrics in the app.

Possible issues

• If you encounter some dependency issues, try to run dep ensure (make sure you have dep installed).

• If you want to make modifications to the datadog image, you have to manually rebuild it with docker build --no-cache datadog -t apmtoyapp_datadog.