Function saveConfigurationVersion

lib/management/configuration.js:149–178

* Writes configuration version to the management database * * @param {object} cachedOverlay Latest stored configuration version * for freshness comparison purposes * @param {object} remoteOverlay New configuration version * @param {werelogs~Logger} log Request-scoped logger * @param {func

(cachedOverlay, remoteOverlay, log, cb)

 * @returns {undefined}
 */
function saveConfigurationVersion(cachedOverlay, remoteOverlay, log, cb) {
    if (remoteOverlayIsNewer(cachedOverlay, remoteOverlay)) {
        const objName = `configuration/overlay/${remoteOverlay.version}`;
        metadata.putObjectMD(managementDatabaseName, objName, remoteOverlay,
            {}, log, error => {
                if (error) {
                    const exceptionError = reshapeExceptionError(error);
                    log.error('could not save configuration',
                        { error: exceptionError,
                          method: 'saveConfigurationVersion',
                          configurationVersion: remoteOverlay.version });
                    cb(exceptionError);
                    return;
                }
                metadata.putObjectMD(managementDatabaseName,
                    latestOverlayVersionKey, remoteOverlay.version, {}, log,
                    error => {
                        if (error) {
                            log.error('could not save configuration version', {
                                configurationVersion: remoteOverlay.version,
                            });
                        }
                        cb(error, remoteOverlay);
                    });
            });
    } else {
        log.debug('no remote configuration to cache yet');
        process.nextTick(cb, null, remoteOverlay);
    }
}

/**
 * Loads the latest cached configuration overlay from the management