resources.py - OpenStack HeatClient 源码分析

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resources.py

发布于 2019-11-12 字数3004 浏览 539 评论 0

resources.py

resource 资源及管理模块。

  • Resource和 类,继承自 base.Resource,代表一个 event 资源,支持更新、删除和获取数据操作。

    class Resource(base.Resource):
      def __repr__(self):
          return "<Resource %s>" % self._info
    
      def update(self, **fields):
          self.manager.update(self, **fields)
    
      def delete(self):
          return self.manager.delete(self)
    
      def data(self, **kwargs):
          return self.manager.data(self, **kwargs)
    
  • ResourceManager,继承自 stacks.StackChildManager,支持对资源进行列出、获取和发出信号等操作。

    class ResourceManager(stacks.StackChildManager):
      resource_class = Resource
    
      def list(self, stack_id, nested_depth=0):
          """Get a list of resources.
          :rtype: list of :class:`Resource`
          """
          url = '/stacks/%s/resources' % stack_id
          if nested_depth:
              url += '?nested_depth=%s' % nested_depth
          return self._list(url, "resources")
    
      def get(self, stack_id, resource_name):
          """Get the details for a specific resource.
    
          :param stack_id: ID of stack containing the resource
          :param resource_name: ID of resource to get the details for
          """
          stack_id = self._resolve_stack_id(stack_id)
          url_str = '/stacks/%s/resources/%s' % (
                    parse.quote(stack_id, ''),
                    parse.quote(strutils.safe_encode(resource_name), ''))
          resp, body = self.client.json_request('GET', url_str)
          return Resource(self, body['resource'])
    
      def metadata(self, stack_id, resource_name):
          """Get the metadata for a specific resource.
    
          :param stack_id: ID of stack containing the resource
          :param resource_name: ID of resource to get metadata for
          """
          stack_id = self._resolve_stack_id(stack_id)
          url_str = '/stacks/%s/resources/%s/metadata' % (
                    parse.quote(stack_id, ''),
                    parse.quote(strutils.safe_encode(resource_name), ''))
          resp, body = self.client.json_request('GET', url_str)
          return body['metadata']
    
      def signal(self, stack_id, resource_name, data=None):
          """Signal a specific resource.
    
          :param stack_id: ID of stack containing the resource
          :param resource_name: ID of resource to send signal to
          """
          stack_id = self._resolve_stack_id(stack_id)
          url_str = '/stacks/%s/resources/%s/signal' % (
                    parse.quote(stack_id, ''),
                    parse.quote(strutils.safe_encode(resource_name), ''))
          resp, body = self.client.json_request('POST', url_str, data=data)
          return body
    
      def generate_template(self, resource_name):
          """DEPRECATED! Use `generate_template` of `ResourceTypeManager`
          instead.
          """
          url_str = '/resource_types/%s/template' % (
                    parse.quote(strutils.safe_encode(resource_name), ''))
          resp, body = self.client.json_request('GET', url_str)
          return body
    

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