tillrohrmann commented on a change in pull request #8002:
[FLINK-11923][metrics] MetricRegistryConfiguration provides MetricReporters
Suppliers
URL: https://github.com/apache/flink/pull/8002#discussion_r274057620
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/metrics/MetricRegistryImpl.java
##########
@@ -113,19 +114,12 @@ public MetricRegistryImpl(MetricRegistryConfiguration
config) {
// by default, don't report anything
LOG.info("No metrics reporter configured, no metrics
will be exposed/reported.");
} else {
- // we have some reporters so
- for (Tuple2<String, Configuration>
reporterConfiguration: reporterConfigurations) {
- String namedReporter = reporterConfiguration.f0;
- Configuration reporterConfig =
reporterConfiguration.f1;
-
- final String className =
reporterConfig.getString(ConfigConstants.METRICS_REPORTER_CLASS_SUFFIX, null);
- if (className == null) {
- LOG.error("No reporter class set for
reporter " + namedReporter + ". Metrics might not be exposed/reported.");
- continue;
- }
+ for (ReporterSetup reporterSetup :
reporterConfigurations) {
+ final String namedReporter =
reporterSetup.getName();
+ final MetricConfig metricConfig =
reporterSetup.getConfiguration();
try {
- String configuredPeriod =
reporterConfig.getString(ConfigConstants.METRICS_REPORTER_INTERVAL_SUFFIX,
null);
+ String configuredPeriod =
metricConfig.getString(ConfigConstants.METRICS_REPORTER_INTERVAL_SUFFIX, null);
Review comment:
I think in general it is better to offer a restricted API because it usually
simplifies things. Here we have to provide the correct key in order to find the
right value. From a user's perspective who does not know the details of how
things are stored in `MetricConfig` it would be easier to simply call
`MetricConfig#getReporterInterval`. It would even be easier to call
`ScheduledMetricReporter#getReportertInterval` to relate this discussion to my
other point.
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