Class: Marathon::Groups

Inherits:
Base
  • Object
show all
Defined in:
lib/marathon/group.rb

Overview

This class represents a set of Groups

Instance Attribute Summary

Attributes inherited from Base

#info

Instance Method Summary collapse

Methods inherited from Base

#to_json

Methods included from Error

error_class, error_message, from_response

Constructor Details

#initialize(marathon_instance) ⇒ Groups

Returns a new instance of Groups.



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# File 'lib/marathon/group.rb', line 171

def initialize(marathon_instance)
  @marathon_instance = marathon_instance
end

Instance Method Details

#change(id, hash, force = false, dry_run = false) ⇒ Object

Change parameters of a deployed application group. Changes to application parameters will result in a restart of this application. A new application added to the group is started. An existing application removed from the group gets stopped. If there are no changes to the application definition, no restart is triggered. During restart marathon keeps track, that the configured amount of minimal running instances are always available. A deployment can run forever. This is the case, when the new application has a problem and does not become healthy. In this case, human interaction is needed with 2 possible choices: Rollback to an existing older version (send an existing version in the body) Update with a newer version of the group which does not have the problems of the old one. If there is an upgrade process already in progress, a new update will be rejected unless the force flag is set. With the force flag given, a running upgrade is terminated and a new one is started. Since the deployment of the group can take a considerable amount of time, this endpoint returns immediatly with a version. The failure or success of the action is signalled via event. There is a group_change_success and group_change_failed event with the given version. id: Group’s id. hash: Hash of attributes to change. force: If the group is affected by a running deployment, then the update operation will fail.

The current deployment can be overridden by setting the `force` query parameter.

dry_run: Get a preview of the deployment steps Marathon would run for a given group update.



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# File 'lib/marathon/group.rb', line 236

def change(id, hash, force = false, dry_run = false)
  query = {}
  query[:force] = true if force
  query[:dryRun] = true if dry_run
  json = @marathon_instance.connection.put("/v2/groups/#{id}", query, :body => hash)
  if dry_run
    json['steps'].map { |e| Marathon::DeploymentStep.new(e) }
  else
    Marathon::DeploymentInfo.new(json, @marathon_instance)
  end
end

#delete(id, force = false) ⇒ Object Also known as: remove

Delete the application group with id. id: Group’s id. force: If the group is affected by a running deployment, then the update operation will fail.

The current deployment can be overridden by setting the `force` query parameter.



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# File 'lib/marathon/group.rb', line 192

def delete(id, force = false)
  query = {}
  query[:force] = true if force
  json = @marathon_instance.connection.delete("/v2/groups/#{id}", query)
  Marathon::DeploymentInfo.new(json, @marathon_instance)
end

#get(id) ⇒ Object

List the group with the specified ID. id: Group’s id.



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# File 'lib/marathon/group.rb', line 177

def get(id)
  json = @marathon_instance.connection.get("/v2/groups/#{id}")
  Marathon::Group.new(json, @marathon_instance)
end

#list ⇒ Object

List all groups.



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# File 'lib/marathon/group.rb', line 183

def list
  json = @marathon_instance.connection.get('/v2/groups')
  Marathon::Group.new(json, @marathon_instance)
end

#start(hash) ⇒ Object Also known as: create

Create and start a new application group. Application groups can contain other application groups. An application group can either hold other groups or applications, but can not be mixed in one. Since the deployment of the group can take a considerable amount of time, this endpoint returns immediatly with a version. The failure or success of the action is signalled via event. There is a group_change_success and group_change_failed event with the given version. hash: Hash including all attributes

see https://mesosphere.github.io/marathon/docs/rest-api.html#post-/v2/groups for full details



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# File 'lib/marathon/group.rb', line 208

def start(hash)
  json = @marathon_instance.connection.post('/v2/groups', nil, :body => hash)
  Marathon::DeploymentInfo.new(json, @marathon_instance)
end