Log incoming solution message

Change-Id: I3f111fc76b48c8e97f39c5d5742fa3fdd744ab9b

optimiser-controller/src/main/java/eu/nebulouscloud/optimiser/controller/ExnConnector.java

@@ -180,14 +180,15 @@ public class ExnConnector {
             // We'll talk a lot with SAL etc, so we should maybe fire up a
             // thread so as not to block here.
             try {
+                ObjectNode json_body = mapper.convertValue(body, ObjectNode.class);
                 String app_id = message.subject();
+                Main.logFile("solver-solution-" + app_id + ".json", json_body);
                 NebulousApp app = NebulousApps.get(app_id);
                 if (app == null) {
                     log.warn("Received solver solutions for non-existant app {}, discarding.", app_id);
                     return;
                 } else {
                     log.debug("Received solver solutions for app {}", app_id);
-                    ObjectNode json_body = mapper.convertValue(body, ObjectNode.class);
                     app.processSolution(json_body);
                 }
             } catch (Exception e) {

optimiser-controller/src/main/java/eu/nebulouscloud/optimiser/controller/Main.java

@@ -92,10 +92,11 @@ public class Main implements Callable<Integer> {
     }
 
     /**
-     * Initialization code shared between main and subcommands.  Note that
+     * Initialization code shared between this class and any
-     * here we connect to SAL if possible, but (for now) do not start the EXN
+     * subcommands: set logging level, create log directory and create
-     * ActiveMQ middleware. Each main method needs to call
+     * the ActiveMQ adapter.  Note that we do not start the EXN
-     * `activeMQConnector.start`.
+     * ActiveMQ middleware, so each main method needs to call
+     * `activeMQConnector.start` if needed.
      */
     private void init() {
         log.debug("Beginning common startup of optimiser-controller");

optimiser-controller/src/main/java/eu/nebulouscloud/optimiser/controller/NebulousApp.java

@@ -374,7 +374,7 @@ public class NebulousApp {
             constant.put("Variable", variableName);
             constant.set("Value", value);
         }
-
+        log.info("Sending AMPL file to solver");
         exnConnector.getAmplMessagePublisher().send(mapper.convertValue(msg, Map.class), getUUID(), true);
         Main.logFile("to-solver-" + getUUID() + ".json", msg.toString());
         Main.logFile("to-solver-" + getUUID() + ".ampl", ampl);

optimiser-controller/src/main/java/eu/nebulouscloud/optimiser/controller/NebulousAppDeployer.java

@@ -78,15 +78,19 @@ public class NebulousAppDeployer {
     }
 
     /**
-     * Given a KubeVela file, extract how many nodes to deploy for each
+     * Given a KubeVela file, extract how many nodes to deploy for
-     * component.
+     * each component.  Note that this can be zero, when the component
+     * should not be deployed at all, e.g., when there is a cloud and
+     * an edge version of the component.
      *
-     * We currently detect replica count with the following component trait:
+     * We currently look for the following component trait:
-     * ---
+     *
+     * <pre>{@code
      * traits:
      *  - type: scaler
      *    properties:
      *      replicas: 2
+     * }</pre>
      *
      * @param kubevela the parsed KubeVela file.
      * @return A map from component name to number of instances to generate.
@@ -100,8 +104,6 @@ public class NebulousAppDeployer {
                 if (t.at("/type").asText().equals("scaler")
                     && t.at("/properties/replicas").canConvertToExactIntegral())
                     {
-                        // Note this can be 0, in case we want to balance
-                        // between e.g. cloud and edge
                         result.put(c.get("name").asText(),
                             t.at("/properties/replicas").asInt());
                     }
@@ -204,8 +206,10 @@ public class NebulousAppDeployer {
     }
 
     /**
-     * Add affinities trait to all components, except for those with a replica
+     * Produce a fresh KubeVela specification with added node affinity traits.
-     * count of 0.
+     *
+     * We add the following trait to all components, except those with
+     * a replica count of 0:
      *
      * <pre>{@code
      * traits:
@@ -279,7 +283,7 @@ public class NebulousAppDeployer {
 
         Main.logFile("worker-requirements-" + appUUID + ".txt", workerRequirements);
         Main.logFile("worker-counts-" + appUUID + ".txt", nodeCounts);
-        Main.logFile("contoller-requirements-" + appUUID + ".txt", controllerRequirements);
+        Main.logFile("controller-requirements-" + appUUID + ".txt", controllerRequirements);
         // ----------------------------------------
         // 2. Find node candidates
 
@@ -362,9 +366,20 @@ public class NebulousAppDeployer {
     }
 
     /**
-     * Redeploy a running application.
+     * Given a KubeVela file, adapt the running application to its specification.
+     *
+     * The KubeVela file will have been rewritten with updated
+     * information from the solver.
+     *
+     * NOTE: this method is under development, pending the new endpoints.
+     *
+     * @param app the NebulOuS app object.
+     * @param kubevela the KubeVela file to deploy.
      */
     public static void redeployApplication(NebulousApp app, ObjectNode kubevela) {
+        String appUUID = app.getUUID();
+        log.info("Starting redeployment of {}", appUUID);
+
         // The overall flow:
         //
         // 1. Extract node requirements and node counts from the updated
@@ -378,6 +393,17 @@ public class NebulousAppDeployer {
         // 6. Call clusterScaleOut endpoint with list of added nodes
         // 7. Call deployApplication with rewritten KubeVela
         // 8. call clusterScaleIn endpoint with list of removed node names
+        Main.logFile("kubevela-updated-from-solver-" + appUUID + ".yaml", kubevela);
+
+        // ------------------------------------------------------------
+        // 1. Extract node requirements
+        Map<String, List<Requirement>> workerRequirements = getWorkerRequirementsFromKubevela(kubevela);
+        Map<String, Integer> nodeCounts = getNodeCountFromKubevela(kubevela);
+        List<Requirement> controllerRequirements = getControllerRequirements(appUUID);
+
+        Main.logFile("worker-requirements-" + appUUID + ".txt", workerRequirements);
+        Main.logFile("worker-counts-" + appUUID + ".txt", nodeCounts);
+        Main.logFile("controller-requirements-" + appUUID + ".txt", controllerRequirements);
 
     }