Masaki Yamakawa created GEODE-2812:
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Summary: Add API to get list of live locators
Key: GEODE-2812
URL: https://issues.apache.org/jira/browse/GEODE-2812
Project: Geode
Issue Type: Improvement
Components: client/server
Reporter: Masaki Yamakawa
There is a Geode cluster using a logical member group, and from the client, the
connection pool to the logical member group is connected using the PoolFactory
API at the timing when connection becomes necessary.
At this time, even though the locator that was running at the initial
connection stops due to reasons such as regular maintenance etc., even if the
alternate locator is started before maintenance, I can not connect to the
locator in the static initial list.
# Client side:PoolManager.createFactory().addLocator("localhost",
10334).setServerGroup("GroupA").create("pool1");
# Geode cluster:start locator [ localhost:10335 ].
# Geode cluster:stop locator [ localhost:10334 ].
# Client side:PoolManager.createFactory().addLocator("localhost",
10334).setServerGroup("GroupB").create("pool2");
Therefore, I would like to decide the connection destination based on the live
locator list of another logical member group.
I added an API that can get the list of live locators from the Pool. Use the
API as follows:
{code:java|borderStyle=solid}
Pool pool = PoolManager.createFactory()
.addLocator("localhost", 10334)
.setSubscriptionEnabled(true).setServerGroup("GroupA")
.create("GroupAPool");
List<InetSocketAddress> = pool.getLiveLocators();
{code}
{quote}
Note:
The list of live locators gets the result of the UpdateLocatorListTask
periodically running in AutoConnectionSourceImpl.
Therefore, whether or not it is alive will cause a time lag, depending on the
task execution interval.
Also, the result of ExplicitConnectionSourceImpl without using a locator is
always empty.
{quote}
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