Drop InfluxDB/Grafana support for the GithubUsageTracker

We don't currently use it, so it is just a maintenance burden.
If we want to resurrect we can always revert this PR.

Gemfile

@@ -6,9 +6,6 @@ gem 'rails', '~> 5.2.8', '>= 5.2.8.1'
 # Use PostgreSQL as the database for Active Record
 gem 'pg'
 
-# InfluxDB for Github rate limit tracking
-gem 'influxdb', '~>0.3.13'
-
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0.7'
 

Gemfile.lock

@@ -145,13 +145,10 @@ GEM
     hashdiff (1.0.1)
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    influxdb (0.3.17)
-      json
     jquery-rails (4.4.0)
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (2.6.2)
     listen (3.7.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
@@ -360,7 +357,6 @@ DEPENDENCIES
   foreman (~> 0.64.0)
   haml (~> 5.1)
   haml_lint (~> 0.35.0)
-  influxdb (~> 0.3.13)
   jquery-rails
   listen
   manageiq-style

README.md

@@ -197,21 +197,6 @@ underscores replaced with hyphens.
     repository with any rubocop problems, such as `MixedCaseConstant = 1`.
     Wait a few minutes and see if it comments on your PR.
 
-### InfluxDB and Grafana setup
-
-The bot collects some optional data in a time series database
-([InfluxDB](https://github.com/influxdata/influxdb)) and displays it in an
-entirely separate user interface ([Grafana](http://grafana.org/)).
-
-To use these features:
-
-* Install and configure InfluxDB
-* Enter the database name and credentials in your local settings yaml
-* Install Grafana
-* Enter the url of the running Grafana instance in your local settings yaml
-
-Metrics tracking is optional and you should not need to do these extra steps to run miq_bot locally.
-
 ### Enabling and Disabling workers
 
 By default, most workers are enabled for all repos (except for the MergeTargetTitler

config/settings.yml

@@ -2,10 +2,6 @@
 github_credentials:
   username:
   password:
-influxdb_credentials:
-  database:
-  username:
-  password:
 
 # General settings
 grafana:

lib/github_service/response/ratelimit_logger.rb

@@ -16,11 +16,6 @@ def initialize(app, logger = nil)
       def on_complete(env)
         api_calls_remaining = env.response_headers['x-ratelimit-remaining']
         logger.info { "Executed #{env.method.to_s.upcase} #{env.url}...api calls remaining #{api_calls_remaining}" }
-        GithubUsageTracker.record_datapoint(
-          :requests_remaining => api_calls_remaining,
-          :uri                => env.url.request_uri,
-          :timestamp          => Time.parse(env.response_headers["date"])
-        )
       end
     end
   end