org.springframework.boot.autoconfigure.mustache.MustacheAutoConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2018 the original author or authors.
*
* 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
*
* 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.springframework.boot.autoconfigure.mustache;
import javax.annotation.PostConstruct;
import com.samskivert.mustache.Mustache;
import com.samskivert.mustache.Mustache.Collector;
import com.samskivert.mustache.Mustache.TemplateLoader;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.template.TemplateLocation;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.core.env.Environment;
/**
* {@link EnableAutoConfiguration Auto-configuration} for Mustache.
*
* @author Dave Syer
* @author Brian Clozel
* @since 1.2.2
*/
@Configuration
@ConditionalOnClass(Mustache.class)
@EnableConfigurationProperties(MustacheProperties.class)
@Import({ MustacheServletWebConfiguration.class, MustacheReactiveWebConfiguration.class })
public class MustacheAutoConfiguration {
private static final Log logger = LogFactory.getLog(MustacheAutoConfiguration.class);
private final MustacheProperties mustache;
private final Environment environment;
private final ApplicationContext applicationContext;
public MustacheAutoConfiguration(MustacheProperties mustache, Environment environment,
ApplicationContext applicationContext) {
this.mustache = mustache;
this.environment = environment;
this.applicationContext = applicationContext;
}
@PostConstruct
public void checkTemplateLocationExists() {
if (this.mustache.isCheckTemplateLocation()) {
TemplateLocation location = new TemplateLocation(this.mustache.getPrefix());
if (!location.exists(this.applicationContext)) {
logger.warn("Cannot find template location: " + location
+ " (please add some templates, check your Mustache "
+ "configuration, or set spring.mustache."
+ "check-template-location=false)");
}
}
}
@Bean
@ConditionalOnMissingBean
public Mustache.Compiler mustacheCompiler(TemplateLoader mustacheTemplateLoader) {
return Mustache.compiler().withLoader(mustacheTemplateLoader)
.withCollector(collector());
}
private Collector collector() {
MustacheEnvironmentCollector collector = new MustacheEnvironmentCollector();
collector.setEnvironment(this.environment);
return collector;
}
@Bean
@ConditionalOnMissingBean(TemplateLoader.class)
public MustacheResourceTemplateLoader mustacheTemplateLoader() {
MustacheResourceTemplateLoader loader = new MustacheResourceTemplateLoader(
this.mustache.getPrefix(), this.mustache.getSuffix());
loader.setCharset(this.mustache.getCharsetName());
return loader;
}
}