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https://github.com/outbrain-inc/sre-interview-exercise


https://github.com/outbrain-inc/sre-interview-exercise

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README 

        
# Exercise

Please read the following instructions before starting to implement your exercise, you don't want to miss any important instruction.



### Creating your repository 



Please mirror this git repo using the instructions [here](https://help.github.com/articles/duplicating-a-repository). Then clone it locally. 

(**Please DO NOT fork the repo**)



### Submitting your solution

You may use one of the following coding languages: Python/Ruby.



The exercise should be delivered as a GitHub repository in your private account, containing:

1. Directory with all the modules of your service (providing a clear directory tree is an advantage).

2. Dockerfile that runs the web framwork and copies the code to the container.

3. Basic instructions on how to use the Dockerfile and examples for querying the service.



Requirments:

1. The service should be started by the Dockerfile and should print all logs/output to the container's shell.



Nice to have:

1. Pay attention to your code structure and organization in classes, functions and modules. Naming convention will also be taken into consideration.

2. We will be looking at you commit history. A tidy commit history is an advantage.



### Exercise

Write a small API service that will expose the following routes:



~~~

GET  /v1/api/checkCurrentWeather

GET  /v1/api/checkCityWeather?city=

POST /v1/api/driveStatus

GET  /v1/api/driveStatus?status=

~~~



#### checkCurrentWeather

This endpoint will check your location according to your IP, then check the current weather at your location and return the result in following format:

`{"city": , "country": , "degrees": }`



* Degrees should be shown in Celsius.

* You can get the location according to the IP via this service: http://ipinfo.io/ 

* You can fetch the weather information for a given location via this service: https://openweathermap.org/current. We will provide you with an API key.



##### Response example



~~~

{"city": "Tel-Aviv", "country": "IL", "degrees": 30}

~~~



#### checkCityWeather

This endpoint will check the current weather at a specific location passed as a query parameter, and will return the result in the following format:

`{"city": , "country": , "degrees": }`



* Degrees should be shown in Celsius.

* You can fetch the weather information for a given location via this service: https://openweathermap.org/current. We will provide you with an API key.



##### Response example



~~~

{"city": "Haifa", "country": "IL", "degrees": 26}

~~~



## Visualize - Grafana

Create a Grafana graph with the following specifications:

- X-axis represents the time

- Y-axis represents the tempratures

- When hover with the mouse a value on the graph, it should represent the city as well.



# Bonus part

#### driveStatus

This endpoint has two available HTTP methods, one for updating the data on the service and one for quering it.



The **POST** endpoint will receive as body the data defined in [input.json](https://github.com/outbrain/core-interview-exercise/blob/master/input.json), and will save it to a local non-consistent file inside the container(when deleting and re-running the container, the file should not be there).

The file should be overwritten with each call (no need to append).



The response should be in the following format: `{"message": "success|failure"}`



* Bonus: you can add the exception you get in case of a failure to the message. 



The **GET** endpoint will receive as query parameter the status to filter the data by and will parse the data in the local file to return only the drives in the provided status.



##### Response example



```

{

  "message": "Found 1 offline drives",

  "data": [

    {

      "name": "SP4",

      "size": "4764771 MB",

      "free": "2333948 MB",

      "path": "/dev/sdk",

      "log": "0 MB",

      "port": 5660,

      "guid": "db53cc9f02524622005b30b0eb0947e3",

      "clusterUuid": "-8650609094877646407--116798096584060989",

      "disks": ["/dev/sdk", "/dev/sdl", "/dev/sdm"],

      "dare": 0

    }

  ]

```



* In cases where the value of the `status` query param is not found in the body, return a proper message and an empty data list.

* In the input file, each key is a drive and each value is a string representing the drive's information.