From 7465fdb9aa847d29dacc56adbe473f1c1ceb298e Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Tue, 4 Jun 2013 20:54:56 +0200
Subject: o Creating a QueueService on top of the DAOs.

---
 .../io/trygvis/spring/SpringJdbcAsyncService.java  | 90 ++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 src/main/java/io/trygvis/spring/SpringJdbcAsyncService.java

(limited to 'src/main/java/io/trygvis/spring/SpringJdbcAsyncService.java')

diff --git a/src/main/java/io/trygvis/spring/SpringJdbcAsyncService.java b/src/main/java/io/trygvis/spring/SpringJdbcAsyncService.java
new file mode 100644
index 0000000..6702642
--- /dev/null
+++ b/src/main/java/io/trygvis/spring/SpringJdbcAsyncService.java
@@ -0,0 +1,90 @@
+package io.trygvis.spring;
+
+import io.trygvis.async.AsyncService;
+import io.trygvis.async.JdbcAsyncService;
+import io.trygvis.async.SqlEffectExecutor;
+import io.trygvis.queue.Queue;
+import io.trygvis.queue.Task;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.jdbc.core.ConnectionCallback;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.transaction.support.TransactionSynchronization;
+import org.springframework.transaction.support.TransactionSynchronizationAdapter;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.List;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
+
+import static org.springframework.transaction.annotation.Propagation.REQUIRED;
+import static org.springframework.transaction.support.TransactionSynchronizationManager.registerSynchronization;
+
+public class SpringJdbcAsyncService implements AsyncService {
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    private final ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(10, Executors.defaultThreadFactory());
+
+    private final JdbcTemplate jdbcTemplate;
+
+    private final SqlEffectExecutor sqlEffectExecutor;
+
+    private final JdbcAsyncService jdbcAsyncService;
+
+    public SpringJdbcAsyncService(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+        jdbcAsyncService = new JdbcAsyncService();
+        sqlEffectExecutor = new SqlEffectExecutor(this.jdbcTemplate.getDataSource());
+    }
+
+    @Transactional(propagation = REQUIRED)
+    public void registerQueue(final Queue queue, final AsyncService.AsyncCallable callable) {
+        jdbcAsyncService.registerQueue(sqlEffectExecutor, queue, callable);
+
+        registerSynchronization(new TransactionSynchronizationAdapter() {
+            public void afterCompletion(int status) {
+                log.info("Transaction completed with status = {}", status);
+                if (status == TransactionSynchronization.STATUS_COMMITTED) {
+                    jdbcAsyncService.startQueue(executor, queue.name);
+                }
+            }
+        });
+
+        log.info("registerQueue: LEAVE");
+    }
+
+    public Queue getQueue(String name) {
+        return jdbcAsyncService.getQueue(name);
+    }
+
+    @Transactional(propagation = REQUIRED)
+    public Task schedule(final Queue queue, final List<String> args) {
+        return jdbcTemplate.execute(new ConnectionCallback<Task>() {
+            @Override
+            public Task doInConnection(Connection c) throws SQLException {
+                return jdbcAsyncService.schedule(c, queue, args);
+            }
+        });
+    }
+
+    public Task schedule(final long parent, final Queue queue, final List<String> args) {
+        return jdbcTemplate.execute(new ConnectionCallback<Task>() {
+            @Override
+            public Task doInConnection(Connection c) throws SQLException {
+                return jdbcAsyncService.schedule(c, parent, queue, args);
+            }
+        });
+    }
+
+    @Transactional(readOnly = true)
+    public Task update(final Task ref) {
+        return jdbcTemplate.execute(new ConnectionCallback<Task>() {
+            @Override
+            public Task doInConnection(Connection c) throws SQLException {
+                return jdbcAsyncService.update(c, ref);
+            }
+        });
+    }
+}
-- 
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