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Mailer.java
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package act.mail;
/*-
* #%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.app.ActionContext;
import org.osgl.$;
import org.osgl.logging.L;
import org.osgl.logging.Logger;
import org.osgl.storage.ISObject;
import org.osgl.storage.impl.SObject;
import org.osgl.util.C;
import org.osgl.util.E;
import org.osgl.util.S;
import java.io.File;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
/**
* A Tag annotation indicate a class or method is used to preparing and send out email
* <p>Note if the annotation is tagged on a class, then framework will treat all public
* void method with name start with "send" as sender method</p>
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD, ElementType.TYPE})
public @interface Mailer {
/**
* Defines the {@link MailerConfig mailer configure ID}.
* <p>Default value: {@code "default"}</p>
*/
String value() default "default";
class Util {
protected static final Logger logger = L.get(Mailer.class);
public static Future<Boolean> send(Object... args) {
throw E.unsupport("to be enhanced");
}
public static MailerContext mailer() {
throw E.unsupport("to be enhanced");
}
public static void from(String from) {
ctx().from = from;
}
public static void to(List<String> recipients) {
ctx().to = S.join(",", recipients);
}
public static void to(String ... recipients) {
ctx().to = S.join(",", recipients);
}
public static void cc(String ... cc) {
ctx().cc = S.join(",", cc);
}
public static void bcc(String ... bcc) {
ctx().bcc = S.join(",", bcc);
}
public static void subject(String subject, Object ... args) {
ctx().subject = subject;
ctx().subjectArgs = args;
}
public static void attach(SObject... attachments) {
ctx().attachments.addAll(C.listOf(attachments));
}
public static void attach(ISObject ... attachments) {
ctx().attachments.addAll(C.listOf(attachments));
}
public static void attach(Collection<? extends ISObject> attachments) {
ctx().attachments.addAll(attachments);
}
public static void attach(File... attachments) {
if (attachments.length == 0) {
return;
}
attachFiles(C.listOf(attachments));
}
public static void attachFiles(Collection<File> attachments) {
if (attachments.isEmpty()) {
return;
}
attach(C.list(attachments).map(new $.Transformer<File, SObject>() {
@Override
public SObject transform(File file) {
return SObject.of(file);
}
}));
}
public static void content(String content, Object ... args) {
if (null != content) {
ctx().content = S.fmt(content, args);
} else {
ctx().content = null;
}
}
public static void templatePath(String templatePath, Object ... args) {
ctx().templatePath = null == templatePath ? null : S.fmt(templatePath, args);
}
private static SimpleContext ctx() {
return _ctx.get();
}
public static Future<Boolean> doSendWithoutLoadThreadLocal(final MailerContext context) {
return context.app().jobManager().now(new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
return context.send();
}
});
}
public static Future<Boolean> doSend(final MailerContext context) {
tryLoadLocale(context);
SimpleContext ctx = _ctx.get();
if (null != ctx) {
if (S.notBlank(ctx.from)) {
context.from(ctx.from);
}
if (S.notBlank(ctx.to)) {
context.to(ctx.to);
}
if (S.notBlank(ctx.cc)) {
context.cc(ctx.cc);
}
if (S.notBlank(ctx.bcc)) {
context.bcc(ctx.bcc);
}
if (S.notBlank(ctx.subject)) {
context.subject(ctx.subject, ctx.subjectArgs);
}
if (!ctx.attachments.isEmpty()) {
context.attach(ctx.attachments);
}
if (null != ctx.content) {
context.content(ctx.content);
}
if (S.notBlank(ctx.templatePath)) {
context.templatePath(ctx.templatePath);
}
_ctx.remove();
}
return context.app().jobManager().now(new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
return context.send();
}
});
}
private static void tryLoadLocale(MailerContext context) {
if (!context.config().i18nEnabled() || context.locale() != null) {
// do nother if
// 1. i18n is not enabled
// 2. context locale has already loaded (via AppJobManager.ContextualJob)
return;
}
// check if there are ActionContext instance in the render args
for (Map.Entry<String, Object> entry : context.renderArgs().entrySet()) {
Object val = entry.getValue();
if (val instanceof ActionContext) {
// load locale from action context
context.locale(((ActionContext) val).locale());
return;
}
}
// load locale from app config (default locale)
context.locale(context.config().locale());
}
private static final ThreadLocal<SimpleContext> _ctx = new ThreadLocal<SimpleContext>() {
@Override
protected SimpleContext initialValue() {
return new SimpleContext();
}
};
private static class SimpleContext {
String from;
String to;
String cc;
String bcc;
String subject;
Object[] subjectArgs;
String content;
String templatePath;
List<ISObject> attachments = new ArrayList<>();
}
}
}