nodejs child.exec bash参数为空

Question

我正在运行一个类似的脚本：

const someString = "text@ip:ip,text@ip:,";
const arg2 = "5";
let result = await new Promise((resolve, reject) => {
        child.exec(`"/path/to/script.sh" "${someString}" "${arg2}"`,
        (error=child.ExecException, stdout=string, stderr=string) => {
            if (error) {
                isErr = true;
                reject(error);
            }else {
                resolve(stdout); 
            }
        });
    });

脚本接收arg2罚款为$ 2。但是，$ 1显示一个空白字符串。我已经在我的node.js应用程序中记录了字符串，这是正确的。可能与字符串中的特殊字符有关吗？

相对于应用程序，需要异步运行脚本，并且相对于其父函数同步运行（在上面的代码段中是这种情况）。

编辑： 这是我无法使用的原始代码。它是动态生成一个可行的库存。

nodejs：

async function buildInventory(site){
    const agentNumber = site.agentData.agentNumber;
    let hostsByType = {};
    let hosts = "";
    if ( site.hosts.length > 0 ){
        site.hosts.forEach(host => {
            if (hostsByType.hasOwnProperty(`${host.type}`)) {
                hostsByType[`${host.type}`].push(`${host.ip}`);
            }else{
                hostsByType[`${host.type}`] = [ `${host.ip}` ];
            }
        });
    }
    if ( hostsByType != {} ){
        for (const key in hostsByType) { // create arg in format type@ip:,type@ip:ip:,
        if (Object.hasOwnProperty.call(hostsByType, key)) {
            hosts = hosts + `${key}@`;
            hostsByType[key].forEach(ip => {
                hosts = hosts + `${ip}:`;
            });
            hosts = hosts + ',';
        }
        console.log(hosts); // string logged is in expected format
    }
}
    if ( hosts = "" ){
        hosts = "na";
    }
    let isErr = false;
    let result = await new Promise((resolve, reject) => {
        child.exec(`"/usr/raindrop/app/ansible/mkinv" "${hosts}" "${agentNumber}"`,
        (error=child.ExecException, stdout=string, stderr=string) => {
            if (error) {
                isErr = true;
                reject(error);
            }else {
                resolve(stdout); 
            }
        });
    });
    if( !isErr ){
        result = result.split(/\r?\n/)[0];
        if ( result == "genskipped" ){
            logger.log('info', `Inventory generation skipped(no hosts)`);
            return true;
        }else if ( result == "gensuccess"){
            logger.log('info', `Inventory generated`);
            return true;
        }else {
            logger.log('warn', `Unknown response from inventory generation script`);
            console.log(result);
            return false;
        }
    }else{
        logger.log('error', `Inventory generation error: ${result}`);
        return false;
    }
}

bash脚本：

#!/bin/bash
mkdir -p /data/ansible/$2
cd /data/ansible/$2
while [[ $1 == "na" ]];do
    echo "genskip"
    exit 0;
done
touch inventory.yml
echo "all:" > inventory.yml
echo "  children:" >> inventory.yml
IFS=',' read -a hostsByType <<< "$1" # arg in format type@ip:,type@ip:ip:,
echo $1 >> /logs/ansible-debug.log
for val in "$hostsByType";do
    while [[ "$val" != "" ]];do
        IFS='@' read -a data <<< "$val"
        echo "    ${data[0]}:" >> inventory.yml
        IFS=':' read -a hosts <<< "${data[1]}"
        c=1
        for host in "$hosts";do
            while [[ "$host" != "" ]];do
              echo "      host${c}: $host"
              c=$(($c + 1))
              break;
            done
        done
      break;
    done
done
subnet=$(cat /data/vpn/rain.conf | grep 'ipv4=')
IFS='=' read -a arr <<< $subnet
subnet=${arr[1]}
agent_ip="${subnet}${2}"
echo "  vars:"  >> inventory.yml
echo "    ansible_port: 22" >> inventory.yml
echo "    ansible_user: sisadm" >> inventory.yml
echo "    private_key_file: /data/ssh/keys/$2" >> inventory.yml
echo "    ansible_ssh_common_args: '-o StrictHostKeyChecking=no -o ProxyCommand=\"ssh -o \'ForwardAgent yes\' agent@$agent_ip -p 11522 \'ssh-add /home/agent/.ssh/id_rsa && nc %h %p\'\"'" >> inventory.yml
echo "gensuccess"

edit2： /logs/asible-debug.log每次运行脚本时都会显示一条新行。 库存。脚本创建：

all:
  children:
  vars:
    ansible_port: 22
    ansible_user: sisadm
    private_key_file: /data/ssh/keys/2
    ansible_ssh_common_args: '-o StrictHostKeyChecking=no -o ProxyCommand="ssh -o \'ForwardAgent yes\' [email protected] -p 11522 \'ssh-add /home/agent/.ssh/id_rsa && nc %h %p\'"'

Answer 1

您的问题在这里：

if ( hosts = "" ){
    hosts = "na";
}

尝试以下操作：

if ( hosts == "" ){
    hosts = "na";
}