/**
* Creates a new SessionPool object for the given config.
*
* @param config holds connection options such as server, user and password, as well as tuning
* options as maximum number of connections allowed
* @throws IOException If connection could not be established
* @throws NullPointerException If config is null
*/
protected SessionPool(ArcSDEConnectionConfig config) throws IOException {
if (config == null) {
throw new NullPointerException("parameter config can't be null");
}
this.config = config;
LOGGER.fine("populating ArcSDE connection pool");
this.seConnectionFactory = createConnectionFactory();
final int minConnections = config.getMinConnections().intValue();
final int maxConnections = config.getMaxConnections().intValue();
if (minConnections > maxConnections) {
throw new IllegalArgumentException("pool.minConnections > pool.maxConnections");
}
{ // configure connection pool
Config poolCfg = new Config();
// pool upper limit
poolCfg.maxActive = config.getMaxConnections().intValue();
// minimum number of idle objects. MAKE SURE this is 0, otherwise the pool will start
// trying to create connections permanently even if there's a connection failure,
// ultimately leading to the exhaustion of resources
poolCfg.minIdle = 0;
// how many connections may be idle at any time? -1 = no limit. We're running an
// eviction thread to take care of idle connections (see minEvictableIdleTimeMillis and
// timeBetweenEvictionRunsMillis)
poolCfg.maxIdle = -1;
// When reached the pool upper limit, block and wait for an idle connection for maxWait
// milliseconds before failing
poolCfg.maxWait = config.getConnTimeOut().longValue();
if (poolCfg.maxWait > 0) {
poolCfg.whenExhaustedAction = GenericObjectPool.WHEN_EXHAUSTED_BLOCK;
} else {
poolCfg.whenExhaustedAction = GenericObjectPool.WHEN_EXHAUSTED_FAIL;
}
// check connection health at borrowObject()?
poolCfg.testOnBorrow = true;
// check connection health at returnObject()?
poolCfg.testOnReturn = false;
// check periodically the health of idle connections and discard them if can't be
// validated?
poolCfg.testWhileIdle = false;
// check health of idle connections every 30 seconds
// /poolCfg.timeBetweenEvictionRunsMillis = 30000;
// drop connections that have been idle for at least 5 minutes
poolCfg.minEvictableIdleTimeMillis = 5 * 60 * 1000;
pool = new GenericObjectPool(seConnectionFactory, poolCfg);
LOGGER.fine("Created ArcSDE connection pool for " + config);
}
ISession[] preload = new ISession[minConnections];
try {
for (int i = 0; i < minConnections; i++) {
preload[i] = (ISession) pool.borrowObject();
if (i == 0) {
SeRelease seRelease = preload[i].getRelease();
String sdeDesc = seRelease.getDesc();
int major = seRelease.getMajor();
int minor = seRelease.getMinor();
int bugFix = seRelease.getBugFix();
String desc = "ArcSDE " + major + "." + minor + "." + bugFix + " " + sdeDesc;
LOGGER.fine("Connected to " + desc);
}
}
for (int i = 0; i < minConnections; i++) {
pool.returnObject(preload[i]);
}
} catch (Exception e) {
close();
if (e instanceof IOException) {
throw (IOException) e;
}
throw (IOException) new IOException().initCause(e);
}
}
public void contextInitialized(ServletContextEvent sce) {
ServletContext servletContext = sce.getServletContext();
String appPath = servletContext.getRealPath("/WEB-INF/sipatra");
String scriptPath =
PropertyUtils.getStringProperty(Properties.SIPATRA_PATH_PROPERTY, null, servletContext);
if (scriptPath == null) {
scriptPath = appPath + "/application.rb";
} else {
File file = new File(scriptPath);
if (!file.exists()) {
_log.error(file.getAbsolutePath() + " does not exist!");
scriptPath = null;
}
if (file.isFile()) {
if (!file.getName().endsWith(".rb"))
_log.warn(file.getAbsolutePath() + " is not a ruby file!");
if (file.getParentFile() != null) appPath = file.getParentFile().getAbsolutePath();
else _log.error(file.getAbsolutePath() + " got no parent directory!");
} else if (file.isDirectory()) {
appPath = new File(scriptPath).getAbsolutePath();
}
}
Config conf = new Config();
conf.maxActive =
PropertyUtils.getIntegerProperty(
Properties.SIPATRA_POOL_MAX_ACTIVE_PROPERTY, -1, servletContext);
conf.maxIdle =
PropertyUtils.getIntegerProperty(
Properties.SIPATRA_POOL_MAX_IDLE_PROPERTY, -1, servletContext);
conf.maxWait =
PropertyUtils.getIntegerProperty(
Properties.SIPATRA_POOL_MAX_WAIT_PROPERTY, -1, servletContext);
conf.minIdle =
PropertyUtils.getIntegerProperty(
Properties.SIPATRA_POOL_MIN_IDLE_PROPERTY, -1, servletContext);
conf.minEvictableIdleTimeMillis =
PropertyUtils.getLongProperty(
Properties.SIPATRA_POOL_MIN_EVICTABLE_PROPERTY, 1000L * 60L * 30L, servletContext);
conf.lifo =
PropertyUtils.getBooleanProperty(Properties.SIPATRA_POOL_LIFO, false, servletContext);
conf.numTestsPerEvictionRun =
PropertyUtils.getIntegerProperty(
Properties.SIPATRA_POOL_TEST_EVICTION_RUN, 3, servletContext);
conf.softMinEvictableIdleTimeMillis =
PropertyUtils.getLongProperty(
Properties.SIPATRA_POOL_SOFT_MIN_EVICTABLE, -1L, servletContext);
conf.testOnBorrow =
PropertyUtils.getBooleanProperty(
Properties.SIPATRA_POOL_TEST_BORROW, false, servletContext);
conf.testOnReturn =
PropertyUtils.getBooleanProperty(
Properties.SIPATRA_POOL_TEST_RETURN, false, servletContext);
conf.testWhileIdle =
PropertyUtils.getBooleanProperty(Properties.SIPATRA_POOL_TEST_IDLE, false, servletContext);
conf.timeBetweenEvictionRunsMillis =
PropertyUtils.getLongProperty(Properties.SIPATRA_POOL_TIME_EVICTION, -1L, servletContext);
GenericObjectPool pool =
new GenericObjectPool(new JRubyRuntimeFactory(appPath, scriptPath), conf);
startPool(
pool,
PropertyUtils.getIntegerProperty(
Properties.SIPATRA_POOL_INIT_POOL_SIZE, 1, servletContext));
servletContext.setAttribute(Attributes.POOL, pool);
}