Skip to main content

Recipe: Group Member

Description​

Group membership management. Adds this instance into a group and keeps a cache of members in the group.

Participating Classes​

  • GroupMember
  • PersistentNode
  • PathChildrenCache

Creating a GroupMember​

// Parameters:
// client - client instance
// membershipPath - the path to use for membership
// thisId - ID of this group member. MUST be unique for the group
// payload - the payload to write in our member node
public GroupMember(
    CuratorFramework client,
    String membershipPath,
    String thisId,
    byte[] payload
);

General Usage​

GroupMember must be started:

group.start();

When you are through with the GroupMember instance, you should call close:

group.close();

... this will remove the instance from the group.

You can get a current view of the members by calling:

group.getCurrentMembers();

Error Handling​

GroupMember instances internally handle all error states recreating the node as necessary.