eolivelli commented on a change in pull request #854: ZOOKEEPER-3143 Pluggable
metrics system for ZooKeeper - Data Collection on Server
URL: https://github.com/apache/zookeeper/pull/854#discussion_r267903443
##########
File path:
zookeeper-server/src/test/java/org/apache/zookeeper/server/admin/CommandsTest.java
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@@ -193,8 +193,15 @@ public void testMonitor() throws IOException,
InterruptedException {
new Field("global_sessions", Long.class),
new Field("local_sessions", Long.class),
new Field("connection_drop_probability", Double.class)
- ));
- for (String metric : ServerMetrics.getAllValues().keySet()) {
+ ));
+ Map<String, Object> metrics = new HashMap<>();
+ ServerMetrics
+ .getMetrics()
+ .getMetricsProvider()
+ .dump( (metric, value)-> {
+ metrics.put(metric, value);
+ });
+ for (String metric : metrics.keySet()) {
Review comment:
@lvfangmin I am not sure it is worth.
This code is only for tests.
I don't want to force a real 'provider' to implement such API.
The dump API does not force the creation of a Map, which will implicitly
require cpu cycles and allocations.
I thought about adding a 'default' method but I think it could be abused,
that is, used in production code (like the monitor command or an http endpoint)
and not in tests.
I can provide an utility for tests inside the tests package.
How does this sounds to you?
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