/**
* Copyright 2011-2017 Asakusa Framework Team.
*
* 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 com.asakusafw.windgate.stream.file;
import java.io.File;
import java.io.IOException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.asakusafw.runtime.core.context.SimulationSupport;
import com.asakusafw.windgate.core.DriverScript;
import com.asakusafw.windgate.core.GateScript;
import com.asakusafw.windgate.core.ParameterList;
import com.asakusafw.windgate.core.ProcessScript;
import com.asakusafw.windgate.core.WindGateLogger;
import com.asakusafw.windgate.core.resource.DrainDriver;
import com.asakusafw.windgate.core.resource.ResourceMirror;
import com.asakusafw.windgate.core.resource.SourceDriver;
import com.asakusafw.windgate.core.util.ProcessUtil;
import com.asakusafw.windgate.core.vocabulary.DataModelStreamSupport;
import com.asakusafw.windgate.stream.StreamDrainDriver;
import com.asakusafw.windgate.stream.StreamSourceDriver;
import com.asakusafw.windgate.stream.WindGateStreamLogger;
/**
* An implementation of {@link ResourceMirror} using local file system.
* @since 0.2.4
* @version 0.4.0
*/
@SimulationSupport
public class FileResourceMirror extends ResourceMirror {
static final WindGateLogger WGLOG = new WindGateStreamLogger(FileResourceMirror.class);
static final Logger LOG = LoggerFactory.getLogger(FileResourceMirror.class);
private final FileProfile profile;
private final ParameterList arguments;
/**
* Creates a new instance.
* @param profile the current profile
* @param arguments arguments
* @throws IllegalArgumentException if some parameters were {@code null}
*/
public FileResourceMirror(FileProfile profile, ParameterList arguments) {
if (profile == null) {
throw new IllegalArgumentException("profile must not be null"); //$NON-NLS-1$
}
if (arguments == null) {
throw new IllegalArgumentException("arguments must not be null"); //$NON-NLS-1$
}
this.profile = profile;
this.arguments = arguments;
}
@Override
public String getName() {
return profile.getResourceName();
}
@Override
public void prepare(GateScript script) throws IOException {
if (script == null) {
throw new IllegalArgumentException("script must not be null"); //$NON-NLS-1$
}
LOG.debug("Preparing file resource: {}",
getName());
for (ProcessScript<?> process : script.getProcesses()) {
if (process.getSourceScript().getResourceName().equals(getName())) {
FileResourceUtil.getPath(profile, process, arguments, DriverScript.Kind.SOURCE);
FileResourceUtil.loadSupport(profile, process, DriverScript.Kind.SOURCE);
ProcessUtil.newDataModel(profile.getResourceName(), process);
}
if (process.getDrainScript().getResourceName().equals(getName())) {
FileResourceUtil.getPath(profile, process, arguments, DriverScript.Kind.DRAIN);
FileResourceUtil.loadSupport(profile, process, DriverScript.Kind.DRAIN);
}
}
}
@Override
public <T> SourceDriver<T> createSource(ProcessScript<T> script) throws IOException {
if (script == null) {
throw new IllegalArgumentException("script must not be null"); //$NON-NLS-1$
}
LOG.debug("Creating source driver for resource \"{}\" in process \"{}\"",
getName(),
script.getName());
File path = FileResourceUtil.getPath(profile, script, arguments, DriverScript.Kind.SOURCE);
DataModelStreamSupport<? super T> support = FileResourceUtil.loadSupport(
profile, script, DriverScript.Kind.SOURCE);
T model = ProcessUtil.newDataModel(profile.getResourceName(), script);
LOG.debug("Source driver uses file: {} (resource={}, process={})", new Object[] {
path.getAbsolutePath(),
getName(),
script.getName(),
});
FileInputStreamProvider provider = new FileInputStreamProvider(path);
return new StreamSourceDriver<>(getName(), script.getName(), provider, support, model);
}
@Override
public <T> DrainDriver<T> createDrain(ProcessScript<T> script) throws IOException {
if (script == null) {
throw new IllegalArgumentException("script must not be null"); //$NON-NLS-1$
}
LOG.debug("Creating drain driver for resource \"{}\" in process \"{}\"",
getName(),
script.getName());
File path = FileResourceUtil.getPath(profile, script, arguments, DriverScript.Kind.DRAIN);
DataModelStreamSupport<? super T> support = FileResourceUtil.loadSupport(
profile, script, DriverScript.Kind.DRAIN);
LOG.debug("Drain driver uses file: {} (resource={}, process={})", new Object[] {
path.getAbsolutePath(),
getName(),
script.getName(),
});
FileOutputStreamProvider provider = new FileOutputStreamProvider(path);
return new StreamDrainDriver<>(getName(), script.getName(), provider, support);
}
@Override
public void close() throws IOException {
return;
}
}