module Aws::Partitions

A {Partition} is a group of AWS {Region} and {Service} objects. You can use a partition to determine what services are available in a region, or what regions a service is available in.

## Partitions

**AWS accounts are scoped to a single partition**. You can get a partition by name. Valid partition names include:

To get a partition by name:

aws = Aws.partition('aws')

You can also enumerate all partitions:

Aws.partitions.each do |partition|
  puts partition.name
end

## Regions

A {Partition} is divided up into one or more regions. For example, the “aws” partition contains, “us-east-1”, “us-west-1”, etc. You can get a region by name. Calling {Partition#region} will return an instance of {Region}.

region = Aws.partition('aws').region('us-east-1')
region.name
#=> "us-east-1"

You can also enumerate all regions within a partition:

Aws.partition('aws').regions.each do |region|
  puts region.name
end

Each {Region} object has a name, description and a list of services available to that region:

us_west_2 = Aws.partition('aws').region('us-west-2')

us_west_2.name #=> "us-west-2"
us_west_2.description #=> "US West (Oregon)"
us_west_2.partition_name "aws"
us_west_2.services #=> #<Set: {"APIGateway", "AutoScaling", ... }

To know if a service is available within a region, you can call `#include?` on the set of service names:

region.services.include?('DynamoDB') #=> true/false

The service name should be the service's module name as used by the AWS SDK for Ruby. To find the complete list of supported service names, see {Partition#services}.

Its also possible to enumerate every service for every region in every partition.

Aws.partitions.each do |partition|
  partition.regions.each do |region|
    region.services.each do |service_name|
      puts "#{partition.name} -> #{region.name} -> #{service_name}"
    end
  end
end

## Services

A {Partition} has a list of services available. You can get a single {Service} by name:

Aws.partition('aws').service('DynamoDB')

You can also enumerate all services in a partition:

Aws.partition('aws').services.each do |service|
  puts service.name
end

Each {Service} object has a name, and information about regions that service is available in.

service.name #=> "DynamoDB"
service.partition_name #=> "aws"
service.regions #=> #<Set: {"us-east-1", "us-west-1", ... }

Some services have multiple regions, and others have a single partition wide region. For example, {Aws::IAM} has a single region in the “aws” partition. The {Service#regionalized?} method indicates when this is the case.

iam = Aws.partition('aws').service('IAM')

iam.regionalized? #=> false
service.partition_region #=> "us-east-1"

Its also possible to enumerate every region for every service in every partition.

Aws.partitions.each do |partition|
  partition.services.each do |service|
    service.regions.each do |region_name|
      puts "#{partition.name} -> #{region_name} -> #{service.name}"
    end
  end
end

## Service Names

{Service} names are those used by the the AWS SDK for Ruby. They correspond to the service's module.

Public Class Methods

add(new_partitions) click to toggle source

@param [Hash] new_partitions @api private

# File lib/aws-sdk-core/partitions.rb, line 130
def add(new_partitions)
  new_partitions['partitions'].each do |partition|
    default_list.add_partition(Partition.build(partition))
    defaults['partitions'] << partition
  end
end
clear() click to toggle source

@api private

# File lib/aws-sdk-core/partitions.rb, line 138
def clear
  default_list.clear
  defaults['partitions'].clear
end
default_list() click to toggle source

@return [PartitionList] @api priviate

# File lib/aws-sdk-core/partitions.rb, line 154
def default_list
  @default_list ||= PartitionList.build(defaults)
end
defaults() click to toggle source

@return [Hash] @api private

# File lib/aws-sdk-core/partitions.rb, line 145
def defaults
  @defaults ||= begin
    path = File.join(File.dirname(__FILE__), '..', '..', 'endpoints.json')
    Aws::Json.load_file(path)
  end
end
service_ids() click to toggle source

@return [Hash<String,String>] Returns a map of service module names

to their id as used in the endpoints.json document.

@api private

# File lib/aws-sdk-core/partitions.rb, line 161
def service_ids
  @service_ids ||= begin
    services = "#{File.dirname(__FILE__)}/../../service-models.json"
    services = Aws::Json.load_file(services)
    services.inject({}) do |ids, (name, svc)|
      ids[name] = svc['endpoint'] #if svc['endpoint']
      ids
    end
  end
end