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(Logical change 1.24) git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@73 fd59a12c-fef9-0310-b244-a6a79926bd2f
63 lines
3.1 KiB
Plaintext
63 lines
3.1 KiB
Plaintext
Application Interface Specification TODO list
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Generic Items
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-------------
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* EVT, DLOCK, MSG APIs functionality need to be developed.
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* Error checking on parameters could use improvement.
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* Allow AIS Executive to configure cluster name.
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* Compliance testing of return values would be helpful.
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* Support B.01.01 version of spec (currently support A.01.01 version).
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* Consider implementing SOCK_SEQPACKET for the AF_UNIX family of sockets on
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Linux. This would save an extra system call every time an operation must
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be done from the API.
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* There are lots of TODO's in the code that need attention.
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Group Messaging Interface
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-------------------------
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* Very important: implement full EVS semantics when holes occur in
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delivery messages after a configuration change but before the new
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configuration is delivered.
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* Very important: block new messages from being multicast until recovery
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of each service has completed after a configuration change. This could be
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done with a "plug" in the token which "stops" any GMI_PRIO_MED or GMI_PRIO_LOW
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messages from being multicast until all members of the configuration have
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unplugged the token. Then queued messages in MED or LOW priority can be
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sent, ensuring correct partition operation.
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* Implement error creation config file to test GMI since all my lossy
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hardware has been fixed.
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* Add secrecy/authentication to group messaging interface.
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* Add support for multiple rings with gateway ring to ring for added scalability
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in LANs.
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* Add support for multiple rings with gateway tuned to long haul networks for
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added scalability in WANs. Look at spread.org as a design.
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* Add support for low delivery-time delay FIFO messages.
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* Add support for SAFE ordering.
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* Add support for encryption/authentication using Helix. nonce will start
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at zero and increment for every message sent or rotation on the ring. Group
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key produced using group key generation protocol.
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Cluster Membership
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------------------
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* Make timeout on SaClmClusterNodeGet work. Currently the timeout is 5
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seconds, but the spec requires the timeout to be specified in the API call.
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Availability Management Framework
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---------------------------------
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* Very Important: Implement configuration change support. This includes partitions.
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* Currently the executive can record and manage only one component service
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instance per component. As a result, one component cannot act as standby/active
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for two other components in the system (AIS Spec page 74 Figure 16. Example of
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n+1 redundancy model).
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- Fix to follow spec.
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* If a user of the AMF library doesn't respond with saAmfResponse, the state
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of the application will never change. Fix by adding timeouts to readiness state
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and ha state changes to force saAmfResponse state changes triggered.
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* Implement resource proxy functions. (currently dummy functions)
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* Implement pending operations. (currently dummy functions)
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* Implement NWAY and NWAYACTIVE redundancy models.
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Checkpointing
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-------------
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* Very Important: Implement configuration change support. This includes partitions.
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* Implement expiration times on checkpoints.
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