extractMessage()

in modules/frontend/app/services/ErrorParser.service.js [31:76]

• 32 lines of code
• 14 McCabe index (conditional complexity)

    extractMessage(err, prefix) {
        prefix = prefix || '';

        if (err) {
            if (err.hasOwnProperty('data'))
                err = err.data;

            if (err.hasOwnProperty('message')) {
                let msg = err.message;

                const traceIndex = msg.indexOf(', trace=');

                if (traceIndex > 0)
                    msg = msg.substring(0, traceIndex);

                const lastIdx = msg.lastIndexOf(' err=');
                let msgEndIdx = msg.indexOf(']', lastIdx);

                if (lastIdx > 0 && msgEndIdx > 0) {
                    let startIdx = msg.indexOf('[', lastIdx);

                    while (startIdx > 0) {
                        const tmpIdx = msg.indexOf(']', msgEndIdx + 1);

                        if (tmpIdx > 0)
                            msgEndIdx = tmpIdx;

                        startIdx = msg.indexOf('[', startIdx + 1);
                    }
                }

                return prefix + (lastIdx >= 0 ? msg.substring(lastIdx + 5, msgEndIdx > 0 ? msgEndIdx : traceIndex) : msg);
            }

            if (nonEmpty(err.className)) {
                if (isEmpty(prefix))
                    prefix = 'Internal cluster error: ';

                return prefix + err.className;
            }

            return prefix + err;
        }

        return prefix + 'Internal error.';
    }