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//
// Copyright (c) ZeroC, Inc. All rights reserved.
//
const Ice = require("../Ice/ModuleRegistry").Ice;
Ice._ModuleRegistry.require(module,
[
"../Ice/Debug",
"../Ice/HashMap",
"../Ice/Promise",
"../Ice/LocalException",
"../Ice/Exception"
]);
const Debug = Ice.Debug;
const HashMap = Ice.HashMap;
class RouterInfo
{
constructor(router)
{
this._router = router;
Debug.assert(this._router !== null);
this._clientEndpoints = null;
this._adapter = null;
this._identities = new HashMap(HashMap.compareEquals); // Set<Identity> = Map<Identity, 1>
this._evictedIdentities = [];
this._hasRoutingTable = false;
}
destroy()
{
this._clientEndpoints = [];
this._adapter = null;
this._identities.clear();
}
equals(rhs)
{
if(this === rhs)
{
return true;
}
if(rhs instanceof RouterInfo)
{
return this._router.equals(rhs._router);
}
return false;
}
hashCode()
{
return this._router.hashCode();
}
getRouter()
{
//
// No mutex lock necessary, _router is immutable.
//
return this._router;
}
getClientEndpoints()
{
const promise = new Ice.Promise();
if(this._clientEndpoints !== null)
{
promise.resolve(this._clientEndpoints);
}
else
{
this._router.getClientProxy().then(result =>
this.setClientEndpoints(result[0],
result[1] !== undefined ? result[1] : true,
promise)).catch(promise.reject);
}
return promise;
}
getServerEndpoints()
{
return this._router.getServerProxy().then(serverProxy => {
if(serverProxy === null)
{
throw new Ice.NoEndpointException();
}
serverProxy = serverProxy.ice_router(null); // The server proxy cannot be routed.
return serverProxy._getReference().getEndpoints();
});
}
addProxy(proxy)
{
Debug.assert(proxy !== null);
if(!this._hasRoutingTable)
{
return Ice.Promise.resolve(); // The router implementation doesn't maintain a routing table.
}
else if(this._identities.has(proxy.ice_getIdentity()))
{
//
// Only add the proxy to the router if it's not already in our local map.
//
return Ice.Promise.resolve();
}
else
{
return this._router.addProxies([proxy]).then(
evictedProxies =>
{
this.addAndEvictProxies(proxy, evictedProxies);
});
}
}
setAdapter(adapter)
{
this._adapter = adapter;
}
getAdapter()
{
return this._adapter;
}
clearCache(ref)
{
this._identities.delete(ref.getIdentity());
}
setClientEndpoints(clientProxy, hasRoutingTable, promise)
{
if(this._clientEndpoints === null)
{
this._hasRoutingTable = hasRoutingTable;
if(clientProxy === null)
{
//
// If getClientProxy() return nil, use router endpoints.
//
this._clientEndpoints = this._router._getReference().getEndpoints();
promise.resolve(this._clientEndpoints);
}
else
{
clientProxy = clientProxy.ice_router(null); // The client proxy cannot be routed.
//
// In order to avoid creating a new connection to the
// router, we must use the same timeout as the already
// existing connection.
//
this._router.ice_getConnection().then(
con =>
{
this._clientEndpoints = clientProxy.ice_timeout(con.timeout())._getReference().getEndpoints();
promise.resolve(this._clientEndpoints);
}).catch(promise.reject);
}
}
else
{
promise.resolve(this._clientEndpoints);
}
}
addAndEvictProxies(proxy, evictedProxies)
{
//
// Check if the proxy hasn't already been evicted by a
// concurrent addProxies call. If it's the case, don't
// add it to our local map.
//
const index = this._evictedIdentities.findIndex(e => e.equals(proxy.ice_getIdentity()));
if(index >= 0)
{
this._evictedIdentities.splice(index, 1);
}
else
{
//
// If we successfully added the proxy to the router,
// we add it to our local map.
//
this._identities.set(proxy.ice_getIdentity(), 1);
}
//
// We also must remove whatever proxies the router evicted.
//
evictedProxies.forEach(proxy =>
{
this._identities.delete(proxy.ice_getIdentity());
});
}
}
Ice.RouterInfo = RouterInfo;
module.exports.Ice = Ice;
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