ansible 自定义事实返回字符串而不是数组

ansible 自定义事实返回字符串而不是数组

我有一个自定义事实,用于我的服务器检索客户数据。这在机器上运行良好并返回有效的 json。我可以将输出写入另一个事实文件,这也可以正常工作。但是当我执行 ansible 设置时,脚本会将所有数据作为一个键中的字符串和一个空值返回,如下所示:

"custom_fact": {
    "{data...}": {}
}

这是我的事实脚本:

#!/bin/bash
#{{ ansible_managed }}
### extracting information from moodle instances

cd /home/vhosts/moodle

function getinstances() {
    MDL_INSTANCES=`find * -maxdepth 0 -not -name "_*" |xargs echo`
}

getinstanceinfo() {
    INSTANCE_ARRAY=()
    for i in $MDL_INSTANCES
    do
        source /home/vhosts/moodle/$i/_update.conf
        firstname="$(mysql -u $UM_DBUSER -p$UM_DBPASS -h mysql -e 'SELECT firstname FROM mdl_user WHERE id=2;' $UM_DBNAME)"
        firstname=${firstname#firstname}
        lastname="$(mysql -u $UM_DBUSER -p$UM_DBPASS -h mysql -e 'SELECT lastname FROM mdl_user WHERE id=2;' $UM_DBNAME)"
        lastname=${lastname#lastname}
        email="$(mysql -u $UM_DBUSER -p$UM_DBPASS -h mysql -e 'SELECT email FROM mdl_user WHERE id=2;' $UM_DBNAME)"
        email=${email#email}
        supportemail="$(mysql -u $UM_DBUSER -p$UM_DBPASS -h mysql -e "SELECT value FROM mdl_config WHERE name='supportemail';" $UM_DBNAME)"
        supportemail=${supportemail#value}
        string="\"domain\":\"$i\",\"firstname\":\"$firstname\",\"lastname\":\"$lastname\",\"email\":\"$email\",\"supportemail\":\"$supportemail\""
        string=$(echo $string | tr -d '\n')
        INSTANCE_ARRAY+=("$string")
    done
}

# creating json for ansible extraction
writetostdout() {
        printf '['
        for (( i=0; i<${#INSTANCE_ARRAY[@]}-1; i++ )) 
        do
                printf "{ ${INSTANCE_ARRAY[$i]} }," 
        done
        printf "{ ${INSTANCE_ARRAY[-1]} }" 
        printf ']' 
}

getinstances
getinstanceinfo
writetostdout

有人知道为什么这不管用吗?我真的被困住了。谢谢帮助。

答案1

如果我没记错的话,你的 JSON 输出看起来像这样:

[{
  "domain": "foo",
  ...
},{
  "domain": "foo",
  ...
},{
  "domain": "foo",
  ...
}]

所以这是一个列表,它肯定是有效的 JSON,但 Ansible 不知道如何处理这个列表。您需要给它一个密钥,以便 Ansible 知道应该将列表分配给哪个事实:

{
  "myList": [{
    "domain": "foo",
    ...
  },{
    "domain": "foo",
    ...
  },{
    "domain": "foo",
    ...
  }]
} 

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