LibreCCM
/
libreccm-legacy
3
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Kommentar hinzugefügt 

git-svn-id: https://svn.libreccm.org/ccm/trunk@884 8810af33-2d31-482b-a856-94f89814c4df
master
quasi 2011-04-30 19:46:07 +00:00
parent 3e139db6bb
commit 8267552268
1 changed files with 33 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
ccm-core/src/com/arsdigita/persistence/PooledConnectionSource.java
View File

@ -41,27 +41,23 @@ import org.apache.log4j.Logger;
* @author Rafael H. Schloming <rhs@mit.edu>
* @version $Id: PooledConnectionSource.java 885 2005-09-20 15:54:06Z sskracic $
**/
public class PooledConnectionSource implements ConnectionSource {
private static final Logger s_log =
Logger.getLogger(PooledConnectionSource.class);
Logger.getLogger(PooledConnectionSource.class);
private static CacheTable s_connectionTags =
new CacheTable("jdbcConnectionTags",
RuntimeConfig.getConfig().getJDBCPoolSize() + 10,
CacheTable.MAX_CACHE_AGE,
false);
new CacheTable("jdbcConnectionTags",
RuntimeConfig.getConfig().getJDBCPoolSize() + 10,
CacheTable.MAX_CACHE_AGE,
false);
private String m_url;
private int m_size;
private long m_interval;
private Set m_connections = new HashSet();
private List m_available = new ArrayList();
private List m_untested = new ArrayList();
private static boolean s_taggingEnabled =
RuntimeConfig.getConfig().isThreadTaggingEnabled();
RuntimeConfig.getConfig().isThreadTaggingEnabled();
public PooledConnectionSource(String url, int size, long interval) {
m_url = url;
@ -94,7 +90,7 @@ public class PooledConnectionSource implements ConnectionSource {
} else {
if (s_log.isDebugEnabled()) {
s_log.debug("Reacquisition failed: " + pref
+ ", tag: " + s_connectionTags.get(pref.toString()));
+ ", tag: " + s_connectionTags.get(pref.toString()));
}
return acquire();
}
@ -113,8 +109,9 @@ public class PooledConnectionSource implements ConnectionSource {
renameThread(result);
return result;
} else {
try { wait(); }
catch (InterruptedException e) {
try {
wait();
} catch (InterruptedException e) {
throw new UncheckedWrapperException(e);
}
}
@ -150,12 +147,12 @@ public class PooledConnectionSource implements ConnectionSource {
String sql = "";
String tag = "";
switch (database) {
case DbHelper.DB_POSTGRES:
sql = "select pg_backend_pid() as tag";
break;
case DbHelper.DB_ORACLE:
sql = "select userenv('SESSIONID') as tag from dual";
break;
case DbHelper.DB_POSTGRES:
sql = "select pg_backend_pid() as tag";
break;
case DbHelper.DB_ORACLE:
sql = "select userenv('SESSIONID') as tag from dual";
break;
}
PreparedStatement stmt = conn.prepareStatement(sql);
ResultSet rs = stmt.executeQuery();
@ -171,11 +168,9 @@ public class PooledConnectionSource implements ConnectionSource {
}
}
public synchronized void release(Connection conn) {
if (!m_connections.contains(conn)) {
throw new IllegalArgumentException
("connection did come from ths source: " + conn);
throw new IllegalArgumentException("connection did come from ths source: " + conn);
}
boolean remove;
@ -211,10 +206,13 @@ public class PooledConnectionSource implements ConnectionSource {
}
private class Poller extends Thread {
public void run() {
while (true) {
try { Thread.sleep(m_interval); }
catch (InterruptedException e) {
s_log.error("PollerThread run(): " + m_interval);
try {
Thread.sleep(m_interval);
} catch (InterruptedException e) {
throw new UncheckedWrapperException(e);
}
testAvailable();
@ -222,15 +220,19 @@ public class PooledConnectionSource implements ConnectionSource {
}
}
// This Thread is running only if ther Poller Thread sends a notify() to
// the synchronized m_untested variable.
private class Tester extends Thread {
public void run() {
List untested = new ArrayList();
while (true) {
untested.clear();
synchronized (m_untested) {
if (m_untested.isEmpty()) {
try { m_untested.wait(); }
catch (InterruptedException e) {
try {
m_untested.wait();
} catch (InterruptedException e) {
throw new UncheckedWrapperException(e);
}
}
@ -238,18 +240,17 @@ public class PooledConnectionSource implements ConnectionSource {
m_untested.clear();
}
for (Iterator it = untested.iterator(); it.hasNext(); ) {
for (Iterator it = untested.iterator(); it.hasNext();) {
Connection conn = (Connection) it.next();
SQLException e = test(conn);
if (e != null) {
s_log.warn("connection " + conn
+ ", tag: " + s_connectionTags.get(conn.toString())
+ " failed test", e);
+ ", tag: " + s_connectionTags.get(conn.toString())
+ " failed test", e);
try {
conn.close();
} catch (SQLException ex) {
s_log.warn
("error while closing bad connection", ex);
s_log.warn("error while closing bad connection", ex);
}
}
release(conn);
@ -257,8 +258,7 @@ public class PooledConnectionSource implements ConnectionSource {
}
}
}
private static final String[] TYPES = new String[] { "TABLE" };
private static final String[] TYPES = new String[]{"TABLE"};
private static SQLException test(Connection conn) {
try {
@ -272,5 +272,4 @@ public class PooledConnectionSource implements ConnectionSource {
return e;
}
}
}