error.txt

FetchError: request to http://solr.internal:8080/solr/maincore/update? failed, reason: connect ECONNREFUSED 169.254.143.220:8080
    at ClientRequest.<anonymous> (/app/node_modules/node-fetch/lib/index.js:1455:11)
    at ClientRequest.emit (events.js:314:20)
    at Socket.socketErrorListener (_http_client.js:469:9)
    at Socket.emit (events.js:314:20)
    at emitErrorNT (internal/streams/destroy.js:100:8)
    at emitErrorCloseNT (internal/streams/destroy.js:68:3)
    at processTicksAndRejections (internal/process/task_queues.js:80:21) {
  type: 'system',
  errno: 'ECONNREFUSED',
  code: 'ECONNREFUSED'
}

solr.js

const solr = require('solr-node');
const config = require("platformsh-config").config();

exports.usageExample = async function() {

    client = new solr({host: 'solr.internal', port: 8080, core: 'maincore', protocol: 'http'});

    let output = '';

    // Add a document.
    let addResult = await client.update({
        id: 123,
        name: 'Valentina Tereshkova',
    });

    output += "Adding one document. Status (0 is success): " + addResult.responseHeader.status +  "<br />\n";

    // Flush writes so that we can query against them.
    await client.softCommit();

    // Select one document:
    let strQuery = client.query().q();
    let writeResult = await client.search(strQuery);
    output += "Selecting documents (1 expected): " + writeResult.response.numFound + "<br />\n";

    // Delete one document.
    let deleteResult = await client.delete({id: 123});
    output += "Deleting one document. Status (0 is success): " + deleteResult.responseHeader.status + "<br />\n";

    return output;
};