步骤2：修改函数配置信息中的OBS地址、OBS桶名和文件名

URI：PUT /v2/{project_id}/fgs/functions/{function_urn}/config

API文档详情请参见：修改函数的metadata信息

• 请求示例

  PUT  https://{Endpoint}/v2/{project_id}/fgs/functions/{function_urn}/config
  {
   "func_name": "download_file_from_obs",
   "handler": "index.handler",
   "memory_size": 256,
   "runtime": "Python2.7",
   "timeout": 30,
   "user_data": "{\"obs_address\":\"obs.example.example.com\",\"srcBucket\":\" xxx\",\"srcObjName\":\"xxx\"}",
   "xrole": "xxx"
  }

  function_urn为步骤1：创建下载文件的函数中记录的函数URN，obs_address为OBS地址，srcBucket为OBS桶名，srcObjName为文件名，xrole为委托名。

• 响应示例

  {
   "func_urn": "urn:fss:{project_name}:{project_id}:function:default:download_file_from_obs:latest",
   "func_name": "download_file_from_obs",
   "domain_id": "89fexxxd636",
   "namespace": "{project_id}",
   "project_name": "xxx",
   "package": "default",
   "runtime": "Python2.7",
   "timeout": 30,
   "handler": "index.handler",
   "memory_size": 256,
   "cpu": 400,
   "code_type": "inline",
   "code_filename": "index.zip",
   "code_size": 1707,
   "user_data": "{\"obs_address\":\"obs.example.example.com\",\"srcBucket\":\"xxx\",\"srcObjName\":\"xxx\"}",
   "digest": "68891a6778848a78bd37a8c0798c91d75a5c87aee6e901303047a52edf05bf2170aac4149d79b3f6a40efe78406a83bf6d8683e7b25da4f0c07e7493aa4ccdcd",
   "version": "latest",
   "image_name": "latest-200603165355@varrp",
   "xrole": "xxx",
   "app_xrole": "xxx",
   "last_modified": "2020-06-03T17:25:03+08:00",
   "strategy_config": {
    "concurrency": -1
   },
   "StrategyConfig": {},
   "enterprise_project_id": "0"
  }