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org.apache.camel.cdi.CdiCamelFactory Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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
*
* 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.cdi;
import java.lang.annotation.Annotation;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Collection;
import java.util.HashSet;
import java.util.Optional;
import javax.enterprise.event.Event;
import javax.enterprise.inject.Any;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.InjectionException;
import javax.enterprise.inject.Instance;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.spi.InjectionPoint;
import org.apache.camel.CamelContext;
import org.apache.camel.ConsumerTemplate;
import org.apache.camel.Endpoint;
import org.apache.camel.FluentProducerTemplate;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.TypeConverter;
import static org.apache.camel.cdi.CdiEventEndpoint.eventEndpointUri;
import static org.apache.camel.cdi.CdiSpiHelper.isAnnotationType;
class CdiCamelFactory {
protected CdiCamelFactory() {
// no-op
}
@Produces
private static TypeConverter typeConverter(
InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension) {
return selectContext(ip, instance, extension).getTypeConverter();
}
@Produces
// Qualifiers are dynamically added in CdiCamelExtension
private static ConsumerTemplate consumerTemplate(
InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension) {
return selectContext(ip, instance, extension).createConsumerTemplate();
}
@Produces
@Default
@Uri("")
// Qualifiers are dynamically added in CdiCamelExtension
private static ProducerTemplate producerTemplate(
InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension) {
return getQualifierByType(ip, Uri.class)
.map(uri -> producerTemplateFromUri(ip, instance, extension, uri))
.orElseGet(() -> defaultProducerTemplate(ip, instance, extension));
}
private static ProducerTemplate producerTemplateFromUri(
InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension, Uri uri) {
try {
CamelContext context = selectContext(ip, instance, extension);
ProducerTemplate producerTemplate = context.createProducerTemplate();
Endpoint endpoint = context.getEndpoint(uri.value(), Endpoint.class);
producerTemplate.setDefaultEndpoint(endpoint);
return producerTemplate;
} catch (Exception cause) {
throw new InjectionException("Error injecting producer template annotated with " + uri + " into " + ip, cause);
}
}
private static ProducerTemplate defaultProducerTemplate(
InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension) {
try {
CamelContext context = selectContext(ip, instance, extension);
return context.createProducerTemplate();
} catch (Exception cause) {
throw new InjectionException("Error injecting producer template into " + ip, cause);
}
}
@Produces
@Default
@Uri("")
// Qualifiers are dynamically added in CdiCamelExtension
private static FluentProducerTemplate fluentProducerTemplate(
InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension) {
return getQualifierByType(ip, Uri.class)
.map(uri -> fluentProducerTemplateFromUri(ip, instance, extension, uri))
.orElseGet(() -> defaultFluentProducerTemplate(ip, instance, extension));
}
private static FluentProducerTemplate fluentProducerTemplateFromUri(
InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension, Uri uri) {
try {
CamelContext context = selectContext(ip, instance, extension);
FluentProducerTemplate producerTemplate = context.createFluentProducerTemplate();
Endpoint endpoint = context.getEndpoint(uri.value(), Endpoint.class);
producerTemplate.setDefaultEndpoint(endpoint);
return producerTemplate;
} catch (Exception cause) {
throw new InjectionException(
"Error injecting fluent producer template annotated with " + uri + " into " + ip, cause);
}
}
private static FluentProducerTemplate defaultFluentProducerTemplate(
InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension) {
try {
CamelContext context = selectContext(ip, instance, extension);
return context.createFluentProducerTemplate();
} catch (Exception cause) {
throw new InjectionException("Error injecting fluent producer template into " + ip, cause);
}
}
@Uri("")
@Produces
// Qualifiers are dynamically added in CdiCamelExtension
private static Endpoint endpoint(InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension) {
Uri uri = getQualifierByType(ip, Uri.class).get();
try {
CamelContext context = selectContext(ip, instance, extension);
return context.getEndpoint(uri.value(), Endpoint.class);
} catch (Exception cause) {
throw new InjectionException("Error injecting endpoint annotated with " + uri + " into " + ip, cause);
}
}
@Produces
@SuppressWarnings("unchecked")
// Qualifiers are dynamically added in CdiCamelExtension
private static CdiEventEndpoint cdiEventEndpoint(
InjectionPoint ip, @Any Instance instance, CdiCamelExtension extension, @Any Event event)
throws Exception {
CamelContext context = selectContext(ip, instance, extension);
Type type = Object.class;
if (ip.getType() instanceof ParameterizedType) {
type = ((ParameterizedType) ip.getType()).getActualTypeArguments()[0];
}
String uri = eventEndpointUri(type, ip.getQualifiers());
if (context.hasEndpoint(uri) == null) {
context.addEndpoint(uri, extension.getEventEndpoint(uri));
}
return context.getEndpoint(uri, CdiEventEndpoint.class);
}
static CamelContext selectContext(InjectionPoint ip, Instance instance, CdiCamelExtension extension) {
Collection qualifiers = new HashSet<>(ip.getQualifiers());
qualifiers.retainAll(extension.getContextQualifiers());
if (qualifiers.isEmpty() && !instance.select(Default.Literal.INSTANCE).isUnsatisfied()) {
return instance.select(Default.Literal.INSTANCE).get();
}
return instance.select(qualifiers.toArray(new Annotation[0])).get();
}
static Optional getQualifierByType(InjectionPoint ip, Class type) {
return ip.getQualifiers().stream()
.filter(isAnnotationType(type))
.findAny()
.map(type::cast);
}
}
