io.joynr.capabilities.AbstractGlobalDiscoveryEntryProvider Maven / Gradle / Ivy
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* Copyright (C) 2011 - 2017 BMW Car IT GmbH
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* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package io.joynr.capabilities;
import com.google.inject.Provider;
import io.joynr.exceptions.JoynrRuntimeException;
import joynr.types.DiscoveryEntry;
import joynr.types.GlobalDiscoveryEntry;
public abstract class AbstractGlobalDiscoveryEntryProvider implements Provider {
private final CapabilitiesProvisioning capabilitiesProvisioning;
private final String interfaceName;
public AbstractGlobalDiscoveryEntryProvider(CapabilitiesProvisioning capabilitiesProvisioning,
String interfaceName) {
assert capabilitiesProvisioning != null : "Capabilities provisioning must not be null.";
assert interfaceName != null : "Interface name must not be null.";
this.capabilitiesProvisioning = capabilitiesProvisioning;
this.interfaceName = interfaceName;
}
@Override
public GlobalDiscoveryEntry get() {
GlobalDiscoveryEntry result = null;
for (DiscoveryEntry discoveryEntry : capabilitiesProvisioning.getDiscoveryEntries()) {
if (discoveryEntry instanceof GlobalDiscoveryEntry) {
GlobalDiscoveryEntry globalDiscoveryEntry = (GlobalDiscoveryEntry) discoveryEntry;
if (interfaceName.equals(globalDiscoveryEntry.getInterfaceName())) {
if (result != null) {
throw new JoynrRuntimeException("Duplicate discovery entry for " + interfaceName
+ ". Make sure only one capability is provisioned for that interface.");
}
result = globalDiscoveryEntry;
}
}
}
if (result == null) {
throw new JoynrRuntimeException("No discovery entry provisioned for capability " + interfaceName
+ ". Exactly one must be provisioned.");
}
return result;
}
}