metrics-http-json-deep.rb not working

[dosullivan]

I've been having a difficult time with the metrics-http-json-deep.rb check. I am trying to use it to collect metrics reported in JSON over HTTP in order to send them to graphite. When I run it against a simple JSON message with just two key/value pairs (like http://echo.jsontest.com/key/value/one/two), I get the following error:

Check failed to run: undefined method each' for nil:NilClass, ["/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-http-1.0.0/bin/metrics-http-json-deep.rb:81:in deep_value'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-http-1.0.0/bin/metrics-http-json-deep.rb:119:in run'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugin-1.2.0/lib/sensu-plugin/cli.rb:56:in block in <class:CLI>'"]

With more complex JSON messages, such as the output I'm actually trying to record, I get this error:

Check failed to run: no implicit conversion of Regexp into String, ["/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-http-1.0.0/bin/metrics-http-json-deep.rb:82:in tr'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-http-1.0.0/bin/metrics-http-json-deep.rb:82:in block in deep_value'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-http-1.0.0/bin/metrics-http-json-deep.rb:81:in each'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-http-1.0.0/bin/metrics-http-json-deep.rb:81:in deep_value'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-http-1.0.0/bin/metrics-http-json-deep.rb:119:in run'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugin-1.2.0/lib/sensu-plugin/cli.rb:56:in block in <class:CLI>'"]

I installed the check using sensu-install, if that helps. Any idea what the issue could be here? Would greatly appreciate any help debugging this.

[ghettodev]

For anyone else who is googling this:

Source:

curl -s http://0.0.0.0:9292/health| python -mjson.tool 
{
    "queue_depth": {
        "connector_worker_pool": 0,
        "publisher_pool": 0,
        "status_updater_pool": 0
    }
}

Error:

metrics-http-json-deep.rb --url http://0.0.0.0:9292/health
Check failed to run: undefined method `each' for nil:NilClass, ["/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-http-1.0.0/bin/metrics-http-json-deep.rb:81:in `deep_value'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-http-1.0.0/bin/metrics-http-json-deep.rb:129:in `run'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugin-1.3.0/lib/sensu-plugin/cli.rb:57:in `block in <class:CLI>'"]

Solution:

metrics-http-json-deep.rb --port 9292 --path health --root 'queue_depth' 
ubuntu.json.connector_worker_pool 0 1470950544
ubuntu.json.publisher_pool 0 1470950544
ubuntu.json.status_updater_pool 0 1470950544

[majormoses]

Is this still an issue?

[majormoses]

@ghettodev could you put together a pr to document this useage?