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How to parse a JSON string in Ruby?
This looks like JavaScript Object Notation (JSON). You can parse JSON that resides in some variable, e.g. json_string, like so: If you’re using an older Ruby, you may need to install the json gem. There are also other implementations of JSON for Ruby that may fit some use-cases better:
How to turn a string into a hash object in Ruby?
It has all the properties how a valid Hash is typed in Ruby. The string created by calling Hash#inspect can be turned back into a hash by calling eval on it. However, this requires the same to be true of all of the objects in the hash.
What to do with the parsed object in Ruby?
Just to extend the answers a bit with what to do with the parsed object: As of Ruby v1.9.3 you don’t need to install any Gems in order to parse JSON, simply use require ‘json’: See JSON at Ruby-Doc. It looks like a JSON string. You can use one of many JSON libraries and it’s as simple as doing:
Do you need a gem to use JSON in Ruby?
JSON is directly supported in Ruby, and has been since at least Ruby v1.9.3, so there is no need to install a gem unless you’re using something older. Simply use require ‘json’ in your code. – the Tin Man Nov 9 ’15 at 17:44
JSON.parse takes a JSON string and return a hash which can be manipulated just like any other hash.
What is the tag and record format in Fluentd?
The tag is a string separated by dots (e.g. myapp.access), and is used as the directions for Fluentd internal routing engine. The time field is specified by input plugins, and it must be in the Unix time format. The record is a JSON object. Fluentd accepts all non-period characters as a part of a tag.
Can a Fluentd logger be used in rails?
You can build asynchronous logging into your application, but Fluentd can sit between your application and backend systems to achieve reliable, asynchronous logging. Rails comes with an excellent logging API, which we will take advantage of to connect Rails logger to Fluentd. We assume that Rails is 4.0 and above in the rest of this article.
How is the time field specified in Fluentd?
The time field is specified by input plugins, and it must be in the Unix time format. The record is a JSON object. Fluentd accepts all non-period characters as a part of a tag.