/**
* Construct a ServiceConsumer
*
* @param adapter The CybernodeAdapter
* @param serviceLimit The maximum number of services the Cybernode has been configured to
* instantiate
* @param config The Configuration object used to obtain operational values
* @throws ConfigurationException if errors occur accessing the configuration
*/
ServiceConsumer(CybernodeAdapter adapter, int serviceLimit, Configuration config)
throws ConfigurationException {
if (adapter == null) throw new NullPointerException("CybernodeAdapter is null");
if (config == null) throw new NullPointerException("config is null");
this.adapter = adapter;
this.config = config;
/* Establish the lease duration */
long ONE_MINUTE = 1000 * 60;
long DEFAULT_LEASE_TIME = ONE_MINUTE * 30; /* 30 minutes */
long MIN_LEASE_TIME = 10 * 1000; /* 10 seconds */
provisionerLeaseDuration =
Config.getLongEntry(
config,
CybernodeImpl.CONFIG_COMPONENT,
"provisionerLeaseDuration",
DEFAULT_LEASE_TIME,
MIN_LEASE_TIME,
Long.MAX_VALUE);
/* Get the retry count if we disconnect from a provisioner */
int DEFAULT_RETRY_COUNT = 3;
int MIN_RETRY_COUNT = 0;
provisionerRetryCount =
Config.getIntEntry(
config,
CybernodeImpl.CONFIG_COMPONENT,
"provisionerRetryCount",
DEFAULT_RETRY_COUNT,
MIN_RETRY_COUNT,
Integer.MAX_VALUE);
/* Get the amount of time to wait between retries */
long DEFAULT_RETRY_DELAY = 1000; /* 1 second */
long MIN_RETRY_DELAY = 0;
provisionerRetryDelay =
Config.getLongEntry(
config,
CybernodeImpl.CONFIG_COMPONENT,
"provisionerRetryDelay",
DEFAULT_RETRY_DELAY,
MIN_RETRY_DELAY,
Long.MAX_VALUE);
if (logger.isLoggable(Level.FINEST))
logger.log(
Level.FINEST,
"LeaseDuration={0}, RetryCount={1}, RetryDelay={2}",
new Object[] {provisionerLeaseDuration, provisionerRetryCount, provisionerRetryDelay});
/* Get the ProxyPreparer for discovered ProvisionMonitor instances */
provisionerPreparer =
(ProxyPreparer)
config.getEntry(
CybernodeImpl.CONFIG_COMPONENT,
"provisionerPreparer",
ProxyPreparer.class,
new BasicProxyPreparer());
if (logger.isLoggable(Level.FINEST))
logger.log(Level.FINEST, "ProxyPreparer={0}", provisionerPreparer);
leaseTable = new Hashtable<Object, ProvisionLeaseManager>();
this.serviceLimit = serviceLimit;
computeResourceObserver = new ComputeResourceObserver(adapter.getComputeResource());
}
/** Destroy the ServiceConsumer */
void destroy() {
try {
adapter.getComputeResource().deleteObserver(computeResourceObserver);
lCache.removeListener(this);
cancelRegistrations();
synchronized (provisioners) {
provisioners.clear();
}
} finally {
destroyed = true;
}
}
