Results for declarative-env

This crate parses and populates a struct with the environmental variables defined in a file, for having the documentation and the code always synchronized.

Parses env.spec files: a declarative contract describing which env vars an app expects, their types, optionality, and ConfigMap-vs-Secret classification. Pure stdlib, zero runtime dependencies.

Allows your to manage many ENV vars by declaring them as dependencies on ENV vars and then enforcing those dependencies. Supports wrapping URIs with support methods.

Declare multiple '.env' files, set up dynamic load orders between them, and use rake tasks to keep them up to date and documented.

StandardHealth is a mountable Rails engine providing /alive, /ready, and /diagnostics/env endpoints, with a configuration block for registering custom checks and a DSL for declaring required and recommended environment variables.

# holepunch [](http://badge.fury.io/rb/holepunch) [](https://travis-ci.org/undeadlabs/holepunch) Holepunch manages AWS EC2 security groups in a declarative way through a DSL. ## Requirements - Ruby 1.9.3 or newer. ## Installation ```bash gem install holepunch ``` or in your Gemfile ```ruby gem 'holepunch' ``` ## Basic Configuration You need to provide your AWS security credentials and a region. These can be provided via the command-line options, or you can use the standard AWS environment variables: ```bash export AWS_ACCESS_KEY_ID='...' export AWS_SECRET_ACCESS_KEY='...' export AWS_REGION='us-west-2' ``` ## The SecurityGroups file Specify your security groups in a `SecurityGroups` file in your project's root. Declare security groups that you need and the ingresses you want to expose. You can add ingresses using `tcp`, `udp`, and `ping`. For each ingress you can list allowed hosts using group names or CIDR notation. ```ruby group 'web' do desc 'Web servers' tcp 80 end group 'db' do desc 'database servers' tcp 5432, 'web' end group 'log' do desc 'log server' tcp 9999, 'web', 'db', '10.1.0.0/16' end ``` An environment can be specified which is available through the `env` variable. This allows you to have custom security groups per server environment. ```ruby group "#{env}-web" group "#{env}-db" do tcp 5432, "#{env}-web" end ``` Your application may depend on security groups defined by other services. Ensure they exist using the `depends` method. ```ruby depends 'my-other-service' group 'my-service' do udp 9999, 'my-other-service' end ``` You may specify port ranges for `tcp` and `udp` using the range operator. ```ruby group 'my-service' do udp 5000..9999, '0.0.0.0/0' end ``` You can specify ping/icmp rules with `icmp` (alias: `ping`). ```ruby group 'my-service' do ping '10.0.0.0/16' end ``` It can be useful to describe groups of security groups you plan to launch instances with by using the `service` declaration. ```ruby service "#{env}-web" do groups %W( admin #{env}-log-producer #{env}-web ) end ``` ## Usage Simply navigate to the directory containing your `SecurityGroups` file and run `holepunch`. ``` $ holepunch ``` If you need to specify an environment: ``` $ holepunch -e live ``` You can get a list of security groups for a service using the `service` subcommand. ``` $ holepunch service -e prod prod-web admin,prod-log-producer,prod-web ``` You can also get a list of all defined services. ``` $ holepunch service --list ``` ## Testing You can run the unit tests by simply running rspec. ``` $ rspec ``` By default the integration tests with EC2 are not run. You may run them with: ``` $ rspec -t integration ``` ## Authors - Ben Scott (gamepoet@gmail.com) - Pat Wyatt (pat@codeofhonor.com) ## License Copyright 2014 Undead Labs, LLC. Licensed under the MIT License: http://opensource.org/licenses/MIT

Contentful API wrapper library exposing an ActiveRecord-like interface

# Rake::ToolkitProgram Create toolkit programs easily with `Rake` and `OptionParser` syntax. Bash completions and usage help are baked in. ## Installation Add this line to your application's Gemfile: ```ruby gem 'rake-toolkit_program' ``` And then execute: $ bundle Or install it yourself as: $ gem install rake-toolkit_program ## Quickstart * Shebang it up (in a file named `awesome_tool.rb`) ```ruby #!/usr/bin/env ruby ``` * Require the library ```ruby require 'rake/toolkit_program' ``` * Make your life easier ```ruby Program = Rake::ToolkitProgram ``` * Define your command tasks ```ruby Program.command_tasks do desc "Build it" task 'build' do # Ruby code here end desc "Test it" task 'test' => ['build'] do # Rake syntax ↑↑↑↑↑↑↑ for dependencies # Ruby code here end end ``` You can use `Program.args` in your tasks to access the other arguments on the command line. For argument parsing integrated into the help provided by the program, see the use of `Rake::Task(Rake::ToolkitProgram::TaskExt)#parse_args` below. * Wire the mainline ```ruby Program.run(on_error: :exit_program!) if $0 == __FILE__ ``` * In the shell, prepare to run the program (UNIX/Linux systems only) ```console $ chmod +x awesome_tool.rb $ ./awesome_tool.rb --install-completions Completions installed in /home/rtweeks/.bashrc Source /home/rtweeks/.bash-complete/awesome_tool.rb-completions for immediate availability. $ source /home/rtweeks/.bash-complete/awesome_tool.rb-completions ``` * Ask for help ```console $ ./awesome_tool.rb help *** ./awesome_tool.rb Toolkit Program *** . . . ``` ## Usage Let's look at a short sample toolkit program -- put this in `awesome.rb`: ```ruby #!/usr/bin/env ruby require 'rake/toolkit_program' require 'ostruct' ToolkitProgram = Rake::ToolkitProgram ToolkitProgram.title = "My Awesome Toolkit of Awesome" ToolkitProgram.command_tasks do desc <<-END_DESC.dedent Fooing myself I'm not sure what I'm doing, but I'm definitely fooing! END_DESC task :foo do a = ToolkitProgram.args puts "I'm fooed#{' on a ' if a.implement}#{a.implement}" end.parse_args(into: OpenStruct.new) do |parser, args| parser.no_positional_args! parser.on('-i', '--implement IMPLEMENT', 'An implement on which to be fooed') do |val| args.implement = val end end end if __FILE__ == $0 ToolkitProgram.run(on_error: :exit_program!) end ``` Make sure to `chmod +x awesome.rb`! What does this support? $ ./awesome.rb foo I'm fooed $ ./awesome.rb --help *** My Awesome Toolkit of Awesome *** Usage: ./awesome.rb COMMAND [OPTION ...] Avaliable options vary depending on the command given. For details of a particular command, use: ./awesome.rb help COMMAND Commands: foo Fooing myself help Show a list of commands or details of one command Use help COMMAND to get more help on a specific command. $ ./awesome.rb help foo *** My Awesome Toolkit of Awesome *** Usage: ./awesome.rb foo [OPTION ...] Fooing myself I'm not sure what I'm doing, but I'm definitely fooing! Options: -i, --implement IMPLEMENT An implement on which to be fooed $ ./awesome.rb --install-completions Completions installed in /home/rtweeks/.bashrc Source /home/rtweeks/.bash-complete/awesome.rb-completions for immediate availability. $ source /home/rtweeks/.bash-complete/awesome.rb-completions $ ./awesome.rb <tab><tab> foo help $ ./awesome.rb f<tab> ↳ ./awesome.rb foo $ ./awesome.rb foo <tab> ↳ ./awesome.rb foo -- $ ./awesome.rb foo --<tab><tab> --help --implement $ ./awesome.rb foo --i<tab> ↳ ./awesome.rb foo --implement $ ./awesome.rb foo --implement <tab><tab> --help awesome.rb $ ./awesome.rb foo --implement spoon I'm fooed on a spoon ### Defining Toolkit Commands Just define tasks in the block of `Rake::ToolkitProgram.command_tasks` with `task` (i.e. `Rake::DSL#task`). If `desc` is used to provide a description, the task will become visible in help and completions. When a command task is initially defined, positional arguments to the command are available as an `Array` through `Rake::ToolkitProgram.args`. ### Option Parsing This gem extends `Rake::Task` with a `#parse_args` method that creates a `Rake::ToolkitProgram::CommandOptionParser` (derived from the standard library's `OptionParser`) and an argument accumulator and `yield`s them to its block. * The arguments accumulated through the `Rake::ToolkitProgram::CommandOptionParser` are available to the task in `Rake::ToolkitProgram.args`, replacing the normal `Array` of positional arguments. * Use the `into:` keyword of `#parse_args` to provide a custom argument accumulator object for the associated command. The default argument accumulator constructor can be defined with `Rake::ToolkitProgram.default_parsed_args`. Without either of these, the default accumulator is a `Hash`. * Options defined using `OptionParser#on` (or any of the variants) will print in the help for the associated command. ### Positional Arguments Accessing positional arguments given after the command name depends on whether or not `Rake::Task(Rake::ToolkitProgram::TaskExt)#parse_args` has been called on the command task. If this method is not called, positional arguments will be an `Array` accessible through `Rake::ToolkitProgram.args`. When `Rake::Task(Rake::ToolkitProgram::TaskExt)#parse_args` is used: * `Rake::ToolkitProgram::CommandOptionParser#capture_positionals` can be used to define how positional arguments are accumulated. * If the argument accumulator is a `Hash`, the default (without calling this method) is to assign the `Array` of positional arguments to the `nil` key of the `Hash`. * For other types of accumulators, the positional arguments are only accessible if `Rake::ToolkitProgram::CommandOptionParser#capture_positionals` is used to define how they are captured. * If a block is given to this method, the block of the method will receive the `Array` of positional arguments. If it is passed an argument value, that value is used as the key under which to store the positional arguments if the argument accumulator is a `Hash`. * `Rake::ToolkitProgram::CommandOptionParser#expect_positional_cardinality` can be used to set a rule for the count of positional arguments. This will affect the _usage_ presented in the help for the associated command. * `Rake::ToolkitProgram::CommandOptionParser#map_positional_args` may be used to transform (or otherwise process) positional arguments one at a time and in the context of options and/or arguments appearing earlier on the command line. ### Convenience Methods * `Rake::Task(Rake::ToolkitProgram::TaskExt)#prohibit_args` is a quick way, for commands that accept no options or positional arguments, to declare this so the help and bash completions reflect this. It is equivalent to using `#parse_args` and telling the parser `parser.expect_positional_cardinality(0)`. * `Rake::ToolkitProgram::CommandOptionParser#no_positional_args!` is a shortcut for calling `#expect_positional_cardinality(0)` on the same object. * `Rake::Task(Rake::ToolkitProgram::TaskExt)#invalid_args!` and `Rake::ToolkitProgram::CommandOptionParser#invalid_args!` are convenient ways to raise `Rake::ToolkitProgram::InvalidCommandLine` with a message. ## OptionParser in Rubies Before and After v2.4 The `OptionParser` class was extended in Ruby 2.4 to simplify capturing options into a `Hash` or other container implementing `#[]=` in a similar way. This gem supports that, but it means that behavior varies somewhat between the pre-2.4 era and the 2.4+ era. To have consistent behavior across that version change, the recommendation is to use a `Struct`, `OpenStruct`, or custom class to hold program options rather than `Hash`. ## Development After checking out the repo, run `bin/setup` to install dependencies. You can also run `bin/console` for an interactive prompt that will allow you to experiment. To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org). To run the tests, use `rake`, `rake test`, or `rspec spec`. Tests can only be run on systems that support `Kernel#fork`, as this is used to present a pristine and isolated environment for setting up the tool. If run using Ruby 2.3 or earlier, some tests will be pending because functionality expects Ruby 2.4's `OptionParser`. ## Contributing Bug reports and pull requests are welcome on GitHub at https://github.com/PayTrace/rake-toolkit_program. For further details on contributing, see [CONTRIBUTING.md](./CONTRIBUTING.md).

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