Azure Log Analytics API call Sample

laquery.js

const request = require('request');

const tenant = '<Your Tenant ID>';
const subscriptionId = '<Yout Subscription ID>';
const clientId = '<Your Service Principal App ID>';
const clientSecret = '<Your Service Principal Password>';
const resourceGroup = '<Your Resource Group Name of Log Analytics Workspace>';
const workSpace = '<Your Workspace Name>';


request.post({
    url: `https://login.microsoftonline.com/${tenant}/oauth2/token`,
    form: {
        grant_type: 'client_credentials',
        client_id: clientId,
        redirect_uri: 'dummy',
        resource: 'https://management.azure.com/',
        client_secret: clientSecret
    }
}, function (err, httpResponse, body) {
    const args = {
        uri: `https://management.azure.com/subscriptions/${subscriptionId}/resourceGroups/${resourceGroup}/providers/Microsoft.OperationalInsights/workspaces/${workSpace}/api/query?api-version=2017-01-01-preview`,
        headers: {
            "Content-type": "application/json",
            "Authorization": "Bearer " + JSON.parse(body).access_token
        },
        json: {
            //Log Analytics Query
            "query": "AzureActivity | summarize count() by Category"
        }
    };
    request.post(args, function (error, response, body) {
        //Handle body
    });
})