json_query filter error - template error while templating string：需要标记'，'

insrf1ej  于 2023-03-24  发布在  其他
关注(0)|答案(1)|浏览(168)

我尝试使用json_query过滤器来解析所需的JSON数据。
Ansible Playbook任务：

- name: Print items in option
  ansible.builtin.debug:
    msg: "{{ clust_opts | community.general.json_query('defaultReplicaSet.topology.\"dc1-indb-tst1:3306\" | [].option['memberWeight']')' }}"

我也在我的剧本中尝试了以下方法-导致了同样的错误：

- name: Print items in option
  ansible.builtin.debug:
    msg: "{{ clust_opts | community.general.json_query('defaultReplicaSet.topology.[?option == 'memberWeight']')' }}"

错误消息：

TASK [Print items in option] **************************************************************************************************
fatal: [dc1-indb-tst1]: FAILED! => {"msg": "template error while templating string: expected token ',', got 'memberWeight'. String: {{ clust_opts | json_query('defaultReplicaSet.topology.[?option == 'memberWeight']')' }}"}

解析数据的JSON：

{
    "clusterName": "idb_test",
    "defaultReplicaSet": {
        "globalOptions": [
            {
                "option": "groupName",
                "value": "8f9e6040-F10s-11ec-b244-005056a4645c",
                "variable": "group_replication_group_name"
            },
            {
                "option": "memberSslMode",
                "value": "REQUIRED",
                "variable": "group_replication_ssl_mode"
            },
            {
                "option": "disableClone",
                "value": false
            }
        ],
        "tags": {
            "dc1-indb-tst1:3306": [],
            "dc1-indb-tst2:3306": [],
            "dc1-indb-tst3:3306": [],
            "global": []
        },
        "topology": {
            "dc1-indb-tst1:3306": [
                {
                    "option": "autoRejoinTries",
                    "value": "3",
                    "variable": "group_replication_autorejoin_tries"
                },
                {
                    "option": "consistency",
                    "value": "EVENTUAL",
                    "variable": "group_replication_consistency"
                },
                {
                    "option": "exitStateAction",
                    "value": "READ_ONLY",
                    "variable": "group_replication_exit_state_action"
                },
                {
                    "option": "expelTimeout",
                    "value": "5",
                    "variable": "group_replication_member_expel_timeout"
                },
                {
                    "option": "groupSeeds",
                    "value": "dc1-indb-tst2:33061,dc1-indb-tst3:33061",
                    "variable": "group_replication_group_seeds"
                },
                {
                    "option": "ipAllowlist",
                    "value": "AUTOMATIC",
                    "variable": "group_replication_ip_allowlist"
                },
                {
                    "option": "ipWhitelist",
                    "value": "AUTOMATIC",
                    "variable": "group_replication_ip_whitelist"
                },
                {
                    "option": "localAddress",
                    "value": "dc1-indb-tst1:33061",
                    "variable": "group_replication_local_address"
                },
                {
                    "option": "memberWeight",
                    "value": "50",
                    "variable": "group_replication_member_weight"
                },
                {
                    "value": "WRITESET",
                    "variable": "binlog_transaction_dependency_tracking"
                },
                {
                    "value": "LOGICAL_CLOCK",
                    "variable": "replica_parallel_type"
                },
                {
                    "value": "4",
                    "variable": "replica_parallel_workers"
                },
                {
                    "value": "ON",
                    "variable": "replica_preserve_commit_order"
                },
                {
                    "value": "XXHASH64",
                    "variable": "transaction_write_set_extraction"
                }
            ],
            "dc1-indb-tst2:3306": [
                {
                    "option": "autoRejoinTries",
                    "value": "3",
                    "variable": "group_replication_autorejoin_tries"
                },
                {
                    "option": "consistency",
                    "value": "EVENTUAL",
                    "variable": "group_replication_consistency"
                },
                {
                    "option": "exitStateAction",
                    "value": "READ_ONLY",
                    "variable": "group_replication_exit_state_action"
                },
                {
                    "option": "expelTimeout",
                    "value": "5",
                    "variable": "group_replication_member_expel_timeout"
                },
                {
                    "option": "groupSeeds",
                    "value": "dc1-indb-tst1:33061,dc1-indb-tst3:33061",
                    "variable": "group_replication_group_seeds"
                },
                {
                    "option": "ipAllowlist",
                    "value": "AUTOMATIC",
                    "variable": "group_replication_ip_allowlist"
                },
                {
                    "option": "ipWhitelist",
                    "value": "AUTOMATIC",
                    "variable": "group_replication_ip_whitelist"
                },
                {
                    "option": "localAddress",
                    "value": "dc1-indb-tst2:33061",
                    "variable": "group_replication_local_address"
                },
                {
                    "option": "memberWeight",
                    "value": "50",
                    "variable": "group_replication_member_weight"
                },
                {
                    "value": "WRITESET",
                    "variable": "binlog_transaction_dependency_tracking"
                },
                {
                    "value": "LOGICAL_CLOCK",
                    "variable": "replica_parallel_type"
                },
                {
                    "value": "4",
                    "variable": "replica_parallel_workers"
                },
                {
                    "value": "ON",
                    "variable": "replica_preserve_commit_order"
                },
                {
                    "value": "XXHASH64",
                    "variable": "transaction_write_set_extraction"
                }
            ],
            "dc1-indb-tst3:3306": [
                {
                    "option": "autoRejoinTries",
                    "value": "3",
                    "variable": "group_replication_autorejoin_tries"
                },
                {
                    "option": "consistency",
                    "value": "EVENTUAL",
                    "variable": "group_replication_consistency"
                },
                {
                    "option": "exitStateAction",
                    "value": "READ_ONLY",
                    "variable": "group_replication_exit_state_action"
                },
                {
                    "option": "expelTimeout",
                    "value": "5",
                    "variable": "group_replication_member_expel_timeout"
                },
                {
                    "option": "groupSeeds",
                    "value": "dc1-indb-tst1:33061,dc1-indb-tst2:33061",
                    "variable": "group_replication_group_seeds"
                },
                {
                    "option": "ipAllowlist",
                    "value": "AUTOMATIC",
                    "variable": "group_replication_ip_allowlist"
                },
                {
                    "option": "ipWhitelist",
                    "value": "AUTOMATIC",
                    "variable": "group_replication_ip_whitelist"
                },
                {
                    "option": "localAddress",
                    "value": "dc1-indb-tst3:33061",
                    "variable": "group_replication_local_address"
                },
                {
                    "option": "memberWeight",
                    "value": "50",
                    "variable": "group_replication_member_weight"
                },
                {
                    "value": "WRITESET",
                    "variable": "binlog_transaction_dependency_tracking"
                },
                {
                    "value": "LOGICAL_CLOCK",
                    "variable": "replica_parallel_type"
                },
                {
                    "value": "4",
                    "variable": "replica_parallel_workers"
                },
                {
                    "value": "ON",
                    "variable": "replica_preserve_commit_order"
                },
                {
                    "value": "XXHASH64",
                    "variable": "transaction_write_set_extraction"
                }
            ]
        }
    }
}

最终目标是能够在option字段中查找数据并返回与之关联的value。
因此，在我的示例中，我想找到特定系统的memberWeight并返回value。
我正在查看dc1-indb-tst1:3306，特别是memberWeight，它应该返回50-但我得到了上面的错误。

JSON

1条答案

按热度按时间
jgwigjjp

jgwigjjp1#

TL;DR;

在此用例中，工作调试任务将是：

- ansible.builtin.debug:
    msg: >-
      {{
        clust_opts | community.general.json_query('
          defaultReplicaSet
            .topology
            ."dc1-indb-tst1:3306"[?
              option == `memberWeight`
            ].value | [0]
        ')
      }}

其中：

ok: [localhost] => 
  msg: '50'

你得到的错误是因为你忘记在JMESPath查询中转义单引号'。
使用引号转义来简化您自己的生活的一个想法是使用YAML折叠样式块符号：

- ansible.builtin.debug:
    msg: >-
      I don't have to escape single (')
      nor double (") quote in this string,
      it is delimited only by the fact that it is further indented
      than the block where the folded block starts.

现在，对于您的JMESPath查询，您在这两个查询中都有部分解决方案，因此，如果您将这两个查询混合在一起，您几乎可以得到您所期望的结果。
稍微解释一下，map的属性是用点.表示法查询的。而数组的元素是用方括号表示法[]查询的。
所以从你第一次尝试开始，这部分是正确的：

defaultReplicaSet.topology."dc1-indb-tst1:3306"

在第二部分中，这一部分是正确的：

[?option == 'memberWeight']

你们一起拥有

defaultReplicaSet
  .topology
  ."dc1-indb-tst1:3306"[?
    option == 'memberWeight'
  ]

这给了你整个对象：

[
  {
    "option": "memberWeight",
    "value": "50",
    "variable": "group_replication_member_weight"
  }
]

现在你只需要查询值，并返回它的第一个结果，所以添加：

.value | [0]

管道表达式用于停止投影，更多信息可以在相关文档中找到。
所以，你的查询结果是：

defaultReplicaSet
  .topology
  ."dc1-indb-tst1:3306"[?
    option == `memberWeight`
  ].value | [0]

请注意：我在这里将单引号'换成了反引号```，正如Ansible文档中关于json_query的一个注解所建议的那样：

在上面的例子中，使用反引号引用文本避免了转义引号并保持了可读性。
实际上，在JMESPath中，它们都表示文字，两者之间有一点小的区别，单引号表示文字表达式，backpacks表示原始文字字符串，但在本例中，is的作用是相同的。
你的debug任务应该是：

- ansible.builtin.debug:
    msg: >-
      {{
        clust_opts | community.general.json_query('
          defaultReplicaSet
            .topology
            ."dc1-indb-tst1:3306"[?
              option == `memberWeight`
            ].value | [0]
        ')
      }}

这将产生：

TASK [ansible.builtin.debug] *********************************************
ok: [localhost] => 
  msg: '50'
赞(0）分享  回复(0）举报  2023-03-24
我来回答

相关问题

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新问答

    更多
    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com