package act.data;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* 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.
* #L%
*/
import act.Act;
import act.app.ActionContext;
import act.cli.CliContext;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import org.osgl.storage.ISObject;
import org.osgl.storage.impl.SObject;
import org.osgl.util.Codec;
import org.osgl.util.E;
import org.osgl.util.S;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
/**
* Resolver String value into SObject
*/
public class SObjectResolver extends StringValueResolverPlugin<SObject> {
public static final SObjectResolver INSTANCE = new SObjectResolver();
private volatile transient OkHttpClient http;
public SObjectResolver() {
}
@Override
public SObject resolve(String value) {
if (value.startsWith("http://") || value.startsWith("https://")) {
return resolveFromURL(value);
} else if (value.startsWith("data:")) {
int pos = value.indexOf("base64,");
if (pos < 0) {
return null;
}
String encoded = value.substring(pos + "base64,".length());
return resolveFromBase64(encoded);
} else {
File file;
CliContext cli = CliContext.current();
if (null != cli) {
file = cli.getFile(value);
if (file.exists() && file.canRead()) {
return SObject.of(file);
}
} else {
ActionContext act = ActionContext.current();
if (null != act) {
ISObject sobj = act.upload(value);
if (null != sobj) {
return (SObject)sobj;
}
}
}
// last try base64 decoder
try {
return resolveFromBase64(value);
} catch (Exception e) {
Act.LOGGER.warn(S.concat("Cannot resolve SObject from value", value));
return null;
}
}
}
private SObject resolveFromURL(String url) {
try {
Response resp = http().newCall(new Request.Builder().url(url).build()).execute();
return SObject.of(resp.body().byteStream());
} catch (IOException e) {
throw E.ioException(e);
}
}
private SObject resolveFromBase64(String encoded) {
return SObject.of(Codec.decodeBase64(encoded));
}
private OkHttpClient http() {
if (null == http) {
synchronized (this) {
if (null == http) {
http = new OkHttpClient.Builder()
.connectTimeout(5, TimeUnit.SECONDS)
.readTimeout(5, TimeUnit.SECONDS)
.writeTimeout(5, TimeUnit.SECONDS).build();
}
}
}
return http;
}
}