Javascript in preprocessing using fetch() function.

[vijayk]

Hello,

Anyone have idea How to use fetch() function in preprocessing to return the value from json data?

I have tried but script showing syntax error. But while run the script in server console with node command it will return the result as I expect.

[dimir]

Untested, but hope you will get the idea:

var result = "";
​
try {
    var req = new HttpRequest();
    var url = 'https:/example.com';
    var resp = req.get(url);

    if (req.getStatus() != 200) {
        throw 'request to ' + url + ' returned unexpected HTTP status code: ' + req.getStatus();
    }

    resp = JSON.parse(resp); // converts response to JSON
    result = resp.something; // gets the value of "something"
} catch (error) {
    Zabbix.log(3, 'Preprocessing failed: ' + error);
}

return result;​

[dimir]

In preprocessing you should be using the HttpRequest class that is provided by Zabbix for fetching data over HTTP protocol.

[vijayk]

Do you have any example? I read it but not able to clearly understand.

[dimir]

Untested, but hope you will get the idea:

var result = "";
​
try {
    var req = new HttpRequest();
    var url = 'https:/example.com';
    var resp = req.get(url);

    if (req.getStatus() != 200) {
        throw 'request to ' + url + ' returned unexpected HTTP status code: ' + req.getStatus();
    }

    resp = JSON.parse(resp); // converts response to JSON
    result = resp.something; // gets the value of "something"
} catch (error) {
    Zabbix.log(3, 'Preprocessing failed: ' + error);
}

return result;​

[vijayk]

Untested, but hope you will get the idea:

var result = "";
​
try {
var req = new HttpRequest();
var resp = req.get('https:/example.com');

if (req.getStatus() != 200) {
throw 'Response code: ' + req.getStatus();
}

resp = JSON.parse(resp); // converts response to JSON
result = resp.something; // gets the value of "something"
} catch (error) {
Zabbix.log(4, 'jira issue creation failed : '+error);
}

return result;​

dimir, thanks got the hint. Now I'm able to get what i want.