通过ssh用argjson发送jq [英] Sending jq with argjson via ssh

问题描述

我正在尝试通过ssh为该JSON运行jq命令:

I'm trying to run jq command via ssh for this JSON:

{
  "nodes": {
    "app": {
      "nodes": 1,
      "is_manager": true,
      "ip": [
        "0.0.0.0"
      ],
      "cpus": 16,
      "memory": 64
    },
    "data": {
      "nodes": 1,
      "ip": [
        "0.0.0.0"
      ],
      "cpus": 16,
      "memory": 64
    },
    "analysis": {
      "nodes": 1,
      "ip": [
        "0.0.0.0"
      ],
      "cpus": 16,
      "memory": 64
    },
    "elastic_kafka_1": {
      "nodes": 1,
      "ip": [
        "0.0.0.0"
      ],
      "cpus": 16,
      "memory": 64
    },
    "elastic_kafka_2": {
      "nodes": 1,
      "ip": [
        "0.0.0.0"
      ],
      "cpus": 16,
      "memory": 64
    },
    "elastic_kafka_3": {
      "nodes": 1,
      "ip": [
        "0.0.0.0"
      ],
      "cpus": 16,
      "memory": 64
    },
    "master": {
      "nodes": 1,
      "ip": [
        "0.0.0.0"
      ],
      "cpus": 16,
      "memory": 64
    }
  }
}

这就是我要运行的:

ssh -o StrictHostKeyChecking=no -i key.pem user@"172.13.1.23"
"jq -Rn --argjson original_doc \"\$(<nodes.json)\" '
  input | split(\"\u0000\") as \$ips
  | \$original_doc
  | .nodes.app.ip = \$ips[0]
  | .nodes.data.ip = \$ips[1]
  | .nodes.analysis.ip = \$ips[2]
  | .nodes.elastic_kafka_1.ip = \$ips[3]
  | .nodes.elastic_kafka_2.ip = \$ips[4]
  | .nodes.elastic_kafka_3.ip = \$ips[5]
  | .nodes.master.ip = \$ips[6]
' < <(printf '%s\0' \"\${GCP_INSTANCES[@]}\") > test.json && mv test.json nodes.json"

这是输出:

{
  "nodes": {
    "app": {
      "nodes": 1,
      "is_manager": true,
      "ip": "",
      "cpus": 16,
      "memory": 64
    },
    "data": {
      "nodes": 1,
      "ip": "",
      "cpus": 16,
      "memory": 64
    },
    "analysis": {
      "nodes": 1,
      "ip": null,
      "cpus": 16,
      "memory": 64
    },
    "elastic_kafka_1": {
      "nodes": 1,
      "ip": null,
      "cpus": 16,
      "memory": 64
    },
    "elastic_kafka_2": {
      "nodes": 1,
      "ip": null,
      "cpus": 16,
      "memory": 64
    },
    "elastic_kafka_3": {
      "nodes": 1,
      "ip": null,
      "cpus": 16,
      "memory": 64
    },
    "master": {
      "nodes": 1,
      "ip": null,
      "cpus": 16,
      "memory": 64
    }
  }
}

如您所见，由于ssh或某些语法问题，jq无法正常工作.

As you can see jq doesn't work properly due to some syntax issue with ssh or something.

我在没有ssh的情况下在本地测试了此命令，并且运行正常.

I tested this command locally, without ssh, and it works properly.

我认为问题出在printf'％s \ 0'，但无法弄清楚我到底在做什么错.

I think the problem is with printf '%s\0', but couldn't figure out what exatly I'm doing wrong.

推荐答案

确保所有引用正确完成的最简单方法是让外壳程序通过使用declare -f生成文本表示形式来为您完成此操作一个已经在本地定义的函数，然后使用declare -p生成该函数需要访问的任何局部变量的文本表示形式.因此:

The easiest way to ensure that all the quoting is done right is to have the shell do it for you, by using declare -f to generate a textual representation of an already-locally-defined function, and declare -p to generate textual representations of any local variables that function needs access to. Thus:

doRemoteWork() {
  jq -Rn --argjson original_doc "$(<nodes.json)" '
    input | split("\u0000") as $ips
    | $original_doc
    | .nodes.app.ip = $ips[0]
    | .nodes.data.ip = $ips[1]
    | .nodes.analysis.ip = $ips[2]
    | .nodes.elastic_kafka_1.ip = $ips[3]
    | .nodes.elastic_kafka_2.ip = $ips[4]
    | .nodes.elastic_kafka_3.ip = $ips[5]
    | .nodes.master.ip = $ips[6]
  ' < <(printf '%s\0' "${GCP_INSTANCES[@]}") >"nodes.json.$$" \
  && mv "nodes.json.$$" nodes.json
}

ssh -o StrictHostKeyChecking=no -i key.pem user@172.13.1.23 \
  "$(declare -p GCP_INSTANCES; declare -f doRemoteWork); doRemoteWork"

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