Class: AliyunIot::Queue

Inherits:
Object
  • Object
show all
Defined in:
lib/aliyun_iot/queue.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name) ⇒ Queue

Returns a new instance of Queue.



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# File 'lib/aliyun_iot/queue.rb', line 24

def initialize(name)
  @name = name
  @pk = product_key
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/aliyun_iot/queue.rb', line 6

def name
  @name
end

Class Method Details

.[](name) ⇒ Object 



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# File 'lib/aliyun_iot/queue.rb', line 12

def [](name)
  Queue.new(name)
end

.queues(opts = {}) ⇒ Object 



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# File 'lib/aliyun_iot/queue.rb', line 16

def queues(opts = {})
  mqs_options = {query: "x-mns-prefix", offset: "x-mns-marker", size: "x-mns-ret-number"}
  mqs_headers = opts.slice(*mqs_options.keys).reduce({}) { |mqs_headers, item| k, v = *item; mqs_headers.merge!(mqs_options[k] => v) }
  response = Request::Xml.get("/queues", mqs_headers)
  Hash.xml_array(response, "Queues", "Queue").collect { |item| Queue.new(URI(item["QueueURL"]).path.sub!(/^\/queues\//, "")) }
end

Instance Method Details

#batch_receive_message(num = 16, wait_seconds = 3) ⇒ Object

批量消费消息



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# File 'lib/aliyun_iot/queue.rb', line 72

def batch_receive_message(num = 16, wait_seconds = 3)
  result = Request::Xml.get(messages_path, query: {waitseconds: wait_seconds, numOfMessages: num})
  return nil if result.nil?
  Result.new(self, result, "Messages", "Message").get_message
end

#create(opts = {}) ⇒ Object

创建队列



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# File 'lib/aliyun_iot/queue.rb', line 30

def create(opts = {})
  Request::Xml.put(queue_path) do |request|
    msg_options = {
        :VisibilityTimeout => 30,
        :DelaySeconds => 0,
        :MaximumMessageSize => 65536,
        :MessageRetentionPeriod => 345600,
        :PollingWaitSeconds => 0
    }.merge(opts)
    request.content(:Queue, msg_options)
  end
end

#delete ⇒ Object

删除队列



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# File 'lib/aliyun_iot/queue.rb', line 49

def delete
  Request::Xml.delete queue_path
end

#device_msg_path(device_name) ⇒ Object 



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# File 'lib/aliyun_iot/queue.rb', line 107

def device_msg_path(device_name)
  "/#{pk}/#{device_name}/get"
end

#messages_path ⇒ Object 



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# File 'lib/aliyun_iot/queue.rb', line 103

def messages_path
  "/queues/#{name}/messages"
end

#peek ⇒ Object

查看消息



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# File 'lib/aliyun_iot/queue.rb', line 44

def peek
  Request::Xml.get(messages_path, query: {peekonly: true})
end

#queue_path ⇒ Object 



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# File 'lib/aliyun_iot/queue.rb', line 99

def queue_path
  "/queues/#{name}"
end

#receive_message(wait_seconds = 3) ⇒ Object

消费消息



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# File 'lib/aliyun_iot/queue.rb', line 65

def receive_message(wait_seconds = 3)
  result = Request::Xml.get(messages_path, query: {waitseconds: wait_seconds})
  return nil if result.nil?
  Result.new(self, result).get_message
end

#send_message(message, opts = {}) ⇒ Object

发送消息



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# File 'lib/aliyun_iot/queue.rb', line 54

def send_message(message, opts = {})
  Request::Xml.post(messages_path) do |request|
    msg_options = {
        :DelaySeconds => 0,
        :Priority => 8
    }.merge(opts)
    request.content(:Message, msg_options.merge(:MessageBody => message.to_s))
  end
end

#set_attr(opts = {}) ⇒ Object

设置队列属性



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# File 'lib/aliyun_iot/queue.rb', line 79

def set_attr(opts = {})
  Request::Xml.put(queue_path, query: {Metaoverride: true}) do |request|
    request.content(:Queue, opts)
  end
end