c6fa96a51f
- Wait with app deployment until utility evaluator has sent us the cost parameter list. - Emit cost parameters in AMPL model - Send both AMPL model and data to the solver once it's started - Pretty-print json files Change-Id: I99b67a10a60883bb411ad486bb8ef92fec175350
90 lines
2.9 KiB
Java
90 lines
2.9 KiB
Java
package eu.nebulouscloud.optimiser.controller;
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import lombok.extern.slf4j.Slf4j;
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import static net.logstash.logback.argument.StructuredArguments.keyValue;
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import java.util.Collection;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import com.fasterxml.jackson.databind.JsonNode;
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/**
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* Class that manages a collection of NebulousApp instances. Also used to
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* temporarily store the relevant performance indicators which are calculated
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* by the utility evaluator from the same incoming app creation message.
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*/
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@Slf4j
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public class NebulousApps {
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/** The global app registry. */
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private static final Map<String, NebulousApp> apps = new ConcurrentHashMap<>();
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/**
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* A place to store relevant performance indicator messages if the app
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* object is not yet available.
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*/
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public static final Map<String, JsonNode> relevantPerformanceIndicators = new ConcurrentHashMap<>();
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/**
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* Add a new application object to the registry.
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*
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* @param app a fresh NebulousApp instance. It is an error if the
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* registry already contains an app with the same uuid.
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*/
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public static synchronized void add(NebulousApp app) {
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String uuid = app.getUUID();
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apps.put(uuid, app);
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log.debug("Added application", keyValue("appId", uuid));
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}
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/**
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* Lookup the application object with the given uuid.
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*
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* @param uuid the app's UUID
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* @return the application object, or null if not found
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*/
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public static synchronized NebulousApp get(String uuid) {
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return apps.get(uuid);
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}
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/**
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* Remove the application object with the given uuid.
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*
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* @param uuid the app object's UUID
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* @return the removed app object
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*/
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public static synchronized NebulousApp remove(String uuid) {
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NebulousApp app = apps.remove(uuid);
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if (app != null) {
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log.debug("Removed application", keyValue("appId", uuid));
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} else {
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log.error("Trying to remove unknown application", keyValue("appId", uuid));
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}
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return app;
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}
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/**
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* Return all currently registered apps.
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*
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* @return a collection of all apps
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*/
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public static synchronized Collection<NebulousApp> values() {
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return apps.values();
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}
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/**
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* Calculate a short, unique cluster name from the given application id.
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* Currently, we use the first 5 characters of the application id followed
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* by the current number of registered applications. We deem the risk of
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* two applications with identical UUID heads racing to register to be
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* acceptable.
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*
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* @param applicationUuid the ID of an application that is not yet registered.
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* @return a short string that is unique across all registered applications.
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*/
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public static synchronized String calculateUniqueClusterName(String applicationUuid) {
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return applicationUuid.substring(0, 5) + "-" + (apps.size() + 1);
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}
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}
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