3 commits

Author	SHA1	Message	Date
Arne Welzel	07e23fb95e	zeromq: Conditionally enable by default ... Instead of having ZeroMQ as a new dependency, enable the ZeroMQ backend only if ZeroMQ is available on the system as suggested by Tim.	2024-12-10 20:33:02 +01:00
Arne Welzel	35c79ab2e3	cluster/backend/zeromq: Add ZeroMQ based cluster backend ... This is a cluster backend implementation using a central XPUB/XSUB proxy that by default runs on the manager node. Logging is implemented leveraging PUSH/PULL sockets between logger and other nodes, rather than going through XPUB/XSUB. The test-all-policy-cluster baseline changed: Previously, Broker::peer() would be called from setup-connections.zeek, causing the IO loop to be alive. With the ZeroMQ backend, the IO loop is only alive when Cluster::init() is called, but that doesn't happen anymore.	2024-12-10 20:33:02 +01:00
Arne Welzel	889c7d888a	cluster/backend/zeromq: Add cppzmq submodule ... Not all supported platforms provide a recent enough cppzmq version, add a fallback as submodule. cppzmq is a header-only library, so there's no build step involved.	2024-12-10 20:33:02 +01:00