public void afterFromProto(Message proto) {
// Validate the rule message.
Topology.Rule rule = (Topology.Rule) proto;
UUID id = UUIDUtil.fromProto(rule.getId());
if (!rule.hasAction()) {
throw new ZoomConvert.ConvertException("Rule " + id + " has no action set (" + rule + ")");
}
switch (rule.getType()) {
case JUMP_RULE:
if (!rule.hasJumpRuleData()) {
throw new ZoomConvert.ConvertException(
"Rule "
+ id
+ " is a JUMP rule but does not have its "
+ "JUMP data set ("
+ rule
+ ")");
}
if (rule.getAction() != Topology.Rule.Action.JUMP)
throw new ZoomConvert.ConvertException(
"Rule "
+ id
+ " is a JUMP rule but does not have its "
+ "action set to JUMP ("
+ rule
+ ")");
break;
case NAT_RULE:
if (!rule.hasNatRuleData()) {
throw new ZoomConvert.ConvertException(
"Rule "
+ id
+ " is a NAT rule but does not have its "
+ "NAT data set ("
+ rule
+ ")");
}
if (!rule.getNatRuleData().getReverse()
&& rule.getNatRuleData().getNatTargetsCount() == 0) {
throw new ZoomConvert.ConvertException(
"Rule " + id + " is a forward NAT rule but has no " + "targets set (" + rule + ")");
}
break;
case TRACE_RULE:
if (rule.getAction() != Topology.Rule.Action.CONTINUE)
throw new ZoomConvert.ConvertException(
"Rule "
+ id
+ " is a TRACE rule but its action is not "
+ " set to CONTINUE ("
+ rule
+ ")");
break;
}
}
public Class<? extends Rule> getType(Topology.Rule proto) {
switch (proto.getType()) {
case JUMP_RULE:
return JumpRule.class;
case LITERAL_RULE:
return LiteralRule.class;
case TRACE_RULE:
return TraceRule.class;
case NAT_RULE:
return NatRule.class;
default:
throw new ZoomConvert.ConvertException("Unknown rule " + "type: " + proto.getType());
}
}
@Override
public UUID createRule(UUID chainId, short ethertype) {
try {
UUID randId = UUID.randomUUID();
Topology.Rule r =
Topology.Rule.getDefaultInstance()
.toBuilder()
.setId(UUIDUtil.toProto(randId))
.setType(Topology.Rule.Type.LITERAL_RULE)
.setAction(Topology.Rule.Action.ACCEPT)
.setChainId(UUIDUtil.toProto(chainId))
.setCondition(Condition.newBuilder().setDlType(ethertype))
.build();
backend.store().create(r);
return randId;
} catch (Exception e) {
throw new RuntimeException("Failed to create chain");
}
}