可行的寄存器访问invocation_module？

Question

我有一个从S3下载文件列表的攻略，这个列表可以通过使用with_items和|default([])动态设置。

拉出此命令后，我需要获取存储文件的目的地列表，并执行其他操作。我注册了var output，并看到调用module_args具有值"Dest“，这就是我想要访问的内容。

我试过这样的东西：

debug: msg="{{ item }}"
with_items: "{{ output.results }}

或者甚至访问output.invocation但得到未定义的变量

任务：

  - name: "Download Apps from S3"
    aws_s3:
      bucket: "{{ resource_bucket_name }}"
      object: "{{ s3_apps[item].src }}"
      dest: "{{ s3_apps[item].dest }}"
      mode: get
    with_items: "{{ s3_apps_decl |default([]) }}"
    register: output

我的带debug的输出变量：

    "msg": [
        {
            "ansible_loop_var": "item",
            "changed": true,
            "failed": false,
            "invocation": {
                "module_args": {
                    "aws_access_key": null,
                    "aws_secret_key": null,
                    "bucket": "bucket-resources",
                    "debug_botocore_endpoint_logs": false,
                    "dest": "/tmp/test_app.tgz",
                    "dualstack": false,
                    "ec2_url": null,
                    "encrypt": true,
                    "encryption_kms_key_id": null,
                    "encryption_mode": "AES256",
                    "expiry": 600,
                    "headers": null,
                    "ignore_nonexistent_bucket": false,
                    "marker": "",
                    "max_keys": 1000,
                    "metadata": null,
                    "mode": "get",
                    "object": "test_app.tgz",
                    "overwrite": "always",
                    "permission": [
                        "private"
                    ],
                    "prefix": "",
                    "profile": null,
                    "region": null,
                    "retries": 0,
                    "rgw": false,
                    "s3_url": null,
                    "security_token": null,
                    "src": null,
                    "validate_certs": true,
                    "version": null
                }
            },
            "item": "test_app",
            "msg": "GET operation complete"
        },
        {
            "ansible_loop_var": "item",
            "changed": true,
            "failed": false,
            "invocation": {
                "module_args": {
                    "aws_access_key": null,
                    "aws_secret_key": null,
                    "bucket": "bucket-resources",
                    "debug_botocore_endpoint_logs": false,
                    "dest": "/tmp/testanotherapp.spl",
                    "dualstack": false,
                    "ec2_url": null,
                    "encrypt": true,
                    "encryption_kms_key_id": null,
                    "encryption_mode": "AES256",
                    "expiry": 600,
                    "headers": null,
                    "ignore_nonexistent_bucket": false,
                    "marker": "",
                    "max_keys": 1000,
                    "metadata": null,
                    "mode": "get",
                    "object": "testanotherapp.spl",
                    "overwrite": "always",
                    "permission": [
                        "private"
                    ],
                    "prefix": "",
                    "profile": null,
                    "region": null,
                    "retries": 0,
                    "rgw": false,
                    "s3_url": null,
                    "security_token": null,
                    "src": null,
                    "validate_certs": true,
                    "version": null
                }
            },
            "item": "testanotherapp",
            "msg": "GET operation complete"
        }
    ]
}

我期望的输出是定义一个变量，该变量输出：['/tmp/testanotherapp.spl'.'/tmp/test_app.tgz']

我已经用与上面任务类似的语法尝试了set_fact，但是它只保存最后一个值...

Answer 1

你在output中所期望的就是你所得到的，因为你正在接收你是registering in a loop的return values from an aws_s3 module call。

现在，如果您只想获取已保存在目标主机上的所有dest的路径列表，则必须从数据结构中执行extract the corresponding attribute。

- name: Show a list of dest paths from previous run
  debug:
    msg: "{{ output.results | map(attribute='invocation.module_args.dest') | list }}"