Examples with UpdateType org.onosproject.p4runtime.api.P4RuntimeWriteClient.UpdateType used on opensource projects

Example 1 with UpdateType

use of org.onosproject.p4runtime.api.P4RuntimeWriteClient.UpdateType in project onos by opennetworkinglab.

the class P4RuntimeFlowRuleProgrammable method appendEntryToWriteRequestOrSkip.

private boolean appendEntryToWriteRequestOrSkip(final WriteRequest writeRequest, final PiTableEntryHandle handle, PiTableEntry piEntryToApply, final Operation driverOperation) {
    // Depending on the driver operation, and if a matching rule exists on
    // the device/mirror, decide which P4Runtime update operation to perform
    // for this entry. In some cases, the entry is skipped from the write
    // request but we want to return the corresponding flow rule as
    // successfully written. In this case, we return true.
    final TimedEntry<PiTableEntry> piEntryOnDevice = tableMirror.get(handle);
    final UpdateType updateType;
    final boolean supportDefaultEntry = driverBoolProperty(SUPPORT_DEFAULT_TABLE_ENTRY, DEFAULT_SUPPORT_DEFAULT_TABLE_ENTRY);
    final boolean deleteBeforeUpdate = driverBoolProperty(DELETE_BEFORE_UPDATE, DEFAULT_DELETE_BEFORE_UPDATE);
    if (driverOperation == APPLY) {
        if (piEntryOnDevice == null) {
            // Entry is first-timer, INSERT or MODIFY if default action.
            updateType = !piEntryToApply.isDefaultAction() || !supportDefaultEntry ? INSERT : MODIFY;
        } else {
            if (piEntryToApply.action().equals(piEntryOnDevice.entry().action())) {
                // FIXME: should we check for other attributes of the table
                // entry? For example can we modify the priority?
                log.debug("Ignoring re-apply of existing entry: {}", piEntryToApply);
                return true;
            } else if (deleteBeforeUpdate && !piEntryToApply.isDefaultAction()) {
                // Some devices return error when updating existing entries.
                // If requested, remove entry before re-inserting the
                // modified one, except the default action entry, that
                // cannot be removed.
                writeRequest.delete(handle);
                updateType = INSERT;
            } else {
                updateType = MODIFY;
            }
        }
    } else {
        // REMOVE.
        if (piEntryToApply.isDefaultAction()) {
            // Cannot remove default action. Instead we should modify it to
            // use the original one as specified in the P4 program.
            final PiTableEntry originalDefaultEntry = getOriginalDefaultEntry(piEntryToApply.table());
            if (originalDefaultEntry == null) {
                return false;
            }
            return appendEntryToWriteRequestOrSkip(writeRequest, originalDefaultEntry.handle(deviceId), originalDefaultEntry, APPLY);
        } else {
            if (piEntryOnDevice == null) {
                log.debug("Ignoring delete of missing entry: {}", piEntryToApply);
                return true;
            }
            updateType = DELETE;
        }
    }
    writeRequest.entity(piEntryToApply, updateType);
    return false;
}