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Add Cluster::nodeid_to_node() helper function

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This translates backend-specific node identifiers (like Broker IDs) to
cluster nodes and their names, if available.
This commit is contained in:
Christian Kreibich 2024-11-18 16:07:26 -08:00
parent 0010e65f6d
commit 46a11ec37d
1 changed files with 20 additions and 0 deletions
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20
scripts/base/frameworks/cluster/main.zeek
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@ -281,6 +281,15 @@ export {
## a given cluster node. ## a given cluster node.
global nodeid_topic: function(id: string): string; global nodeid_topic: function(id: string): string;
## Retrieve the cluster-level naming of a node based on its node ID,
## a backend-specific identifier.
##
## id: the node ID of a peer.
##
## Returns: the :zeek:see:`Cluster::NamedNode` for the requested node, if
## known, otherwise a "null" instance with an empty name field.
global nodeid_to_node: function(id: string): NamedNode;
## Initialize the cluster backend. ## Initialize the cluster backend.
## ##
## Cluster backends usually invoke this from a :zeek:see:`zeek_init` handler. ## Cluster backends usually invoke this from a :zeek:see:`zeek_init` handler.
@ -394,6 +403,17 @@ function nodeid_topic(id: string): string
return nodeid_topic_prefix + id + "/"; return nodeid_topic_prefix + id + "/";
} }
function nodeid_to_node(id: string): NamedNode
{
for ( name, n in nodes )
{
if ( n?$id && n$id == id )
return NamedNode($name=name, $node=n);
}
return NamedNode($name="", $node=[$node_type=NONE, $ip=0.0.0.0]);
}
event Cluster::hello(name: string, id: string) &priority=10 event Cluster::hello(name: string, id: string) &priority=10
{ {
if ( name !in nodes ) if ( name !in nodes )