use of org.apache.dubbo.common.constants.CommonConstants.RELEASE_KEY in project dubbo by alibaba.
the class RmiProtocol method doRefer.
@Override
@SuppressWarnings("unchecked")
protected <T> T doRefer(final Class<T> serviceType, final URL url) throws RpcException {
final RmiProxyFactoryBean rmiProxyFactoryBean = new RmiProxyFactoryBean();
final String generic = url.getParameter(GENERIC_KEY);
final boolean isGeneric = ProtocolUtils.isGeneric(generic) || serviceType.equals(GenericService.class);
/*
RMI needs extra parameter since it uses customized remote invocation object
The customized RemoteInvocation was firstly introduced in v2.6.3; The package was renamed to 'org.apache.*' since v2.7.0
Considering the above two conditions, we need to check before sending customized RemoteInvocation:
1. if the provider version is v2.7.0 or higher, send 'org.apache.dubbo.rpc.protocol.rmi.RmiRemoteInvocation'.
2. if the provider version is v2.6.3 or higher, send 'com.alibaba.dubbo.rpc.protocol.rmi.RmiRemoteInvocation'.
3. if the provider version is lower than v2.6.3, does not use customized RemoteInvocation.
*/
if (isRelease270OrHigher(url.getParameter(RELEASE_KEY))) {
rmiProxyFactoryBean.setRemoteInvocationFactory(methodInvocation -> {
RemoteInvocation invocation = new RmiRemoteInvocation(methodInvocation);
if (isGeneric) {
invocation.addAttribute(GENERIC_KEY, generic);
}
return invocation;
});
} else if (isRelease263OrHigher(url.getParameter(DUBBO_VERSION_KEY))) {
rmiProxyFactoryBean.setRemoteInvocationFactory(methodInvocation -> {
RemoteInvocation invocation = new com.alibaba.dubbo.rpc.protocol.rmi.RmiRemoteInvocation(methodInvocation);
if (isGeneric) {
invocation.addAttribute(GENERIC_KEY, generic);
}
return invocation;
});
}
String serviceUrl = url.toIdentityString();
if (isGeneric) {
serviceUrl = serviceUrl + "/" + GENERIC_KEY;
}
rmiProxyFactoryBean.setServiceUrl(serviceUrl);
rmiProxyFactoryBean.setServiceInterface(serviceType);
rmiProxyFactoryBean.setCacheStub(true);
rmiProxyFactoryBean.setLookupStubOnStartup(true);
rmiProxyFactoryBean.setRefreshStubOnConnectFailure(true);
rmiProxyFactoryBean.afterPropertiesSet();
return (T) rmiProxyFactoryBean.getObject();
}
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