Cache costexplorer API

[Azanul]

Problem

• Last 6 months of cost data is not present
• Region shouldn't be considered for filtering costexplorer API data

Solution

• Cache the costexplorer output for last 6 months in local json file
• Disregard region

Notes

• Kept the region argument as it'd be useful in the near future

Checklist

• Code follows the contributing guidelines
• Changes have been thoroughly tested
• Documentation has been updated, if necessary
• Any dependencies have been added to the project, if necessary

Reviewers

@mlabouardy @jakepage91

[jakepage91]

LGTM!

[AvineshTripathi]

I would prefer to keep the cache file as temp file with a scope of application life cycle

[Azanul]

I would prefer to keep the cache file as temp file with a scope of application life cycle

we want to keep the file even when application turns off or crashes. Since it charges user to make requests, we'll have the user to set frequency for this separately having 1 week by default.

[AvineshTripathi]

we might wanna change the location of the file and not keep it in current dir

[Azanul]

we might wanna change the location of the file and not keep it in current dir

open to suggestions

[AvineshTripathi]

I would keep it in /tmp dir maybe

[Azanul]

I would keep it in /tmp dir maybe

Putting it in /tmp would clear it on device/container reboot

[AvineshTripathi]

@Azanul for now we can keep it in same place, please update the branch I ll give approve