org.apache.curator.framework.recipes.locks.LockInternalsSorter Java Examples

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Example #1
Source File: ClusterStateHolder.java    From hermes with Apache License 2.0 6 votes vote down vote up 
private void updateLeaderInfo() {
	List<ChildData> children = m_leaderLatchPathChildrenCache.getCurrentData();

	if (children != null && !children.isEmpty()) {
		List<String> childrenNames = new ArrayList<>(children.size());
		Map<String, byte[]> nameDataMapping = new HashMap<>(children.size());
		for (ChildData child : children) {
			if (child.getData() != null && child.getData().length > 0) {
				String name = ZKPathUtils.lastSegment(child.getPath());
				childrenNames.add(name);
				nameDataMapping.put(name, child.getData());
			}
		}

		List<String> sortedChildren = LockInternals.getSortedChildren("latch-", new LockInternalsSorter() {

			@Override
			public String fixForSorting(String str, String lockName) {
				return StandardLockInternalsDriver.standardFixForSorting(str, lockName);
			}
		}, childrenNames);

		m_leader.set(ZKSerializeUtils.deserialize(nameDataMapping.get(sortedChildren.get(0)), HostPort.class));
	}
}