Add assignment based on last usage.

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/VmDefinition.java

@@ -18,7 +18,11 @@
 
 package org.jdrupes.vmoperator.common;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import io.kubernetes.client.openapi.models.V1Condition;
 import io.kubernetes.client.openapi.models.V1ObjectMeta;
+import java.time.Instant;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.EnumSet;
@@ -36,9 +40,12 @@ import org.jdrupes.vmoperator.util.DataPath;
 /**
  * Represents a VM definition.
  */
-@SuppressWarnings({ "PMD.DataClass" })
+@SuppressWarnings({ "PMD.DataClass", "PMD.TooManyMethods" })
 public class VmDefinition {
 
+    private static ObjectMapper objectMapper
+        = new ObjectMapper().registerModule(new JavaTimeModule());
+
     private String kind;
     private String apiVersion;
     private V1ObjectMeta metadata;
@@ -306,6 +313,31 @@ public class VmDefinition {
         return fromStatus("assignment", "user");
     }
 
+    /**
+     * Last usage of assigned VM.
+     *
+     * @return the optional
+     */
+    public Optional<Instant> assignmentLastUsed() {
+        return this.<String> fromStatus("assignment", "lastUsed")
+            .map(Instant::parse);
+    }
+
+    /**
+     * Return a condition from the status.
+     *
+     * @param name the condition's name
+     * @return the status, if the condition is defined
+     */
+    public Optional<V1Condition> condition(String name) {
+        return this.<List<Map<String, Object>>> fromStatus("conditions")
+            .orElse(Collections.emptyList()).stream()
+            .filter(cond -> DataPath.get(cond, "type")
+                .map(name::equals).orElse(false))
+            .findFirst()
+            .map(cond -> objectMapper.convertValue(cond, V1Condition.class));
+    }
+
     /**
      * Return a condition's status.
      *

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/VmPool.java

@@ -18,6 +18,8 @@
 
 package org.jdrupes.vmoperator.common;
 
+import java.time.Duration;
+import java.time.Instant;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashSet;
@@ -36,6 +38,7 @@ import org.jdrupes.vmoperator.util.DataPath;
 public class VmPool {
 
     private String name;
+    private String retention;
     private boolean defined;
     private List<Grant> permissions = Collections.emptyList();
     private final Set<String> vms
@@ -86,6 +89,24 @@ public class VmPool {
         this.defined = defined;
     }
 
+    /**
+     * Gets the retention.
+     *
+     * @return the retention
+     */
+    public String retention() {
+        return retention;
+    }
+
+    /**
+     * Sets the retention.
+     *
+     * @param retention the retention to set
+     */
+    public void setRetention(String retention) {
+        this.retention = retention;
+    }
+
     /**
      * Permissions granted for a VM from the pool.
      *
@@ -113,6 +134,11 @@ public class VmPool {
         return vms;
     }
 
+    /**
+     * To string.
+     *
+     * @return the string
+     */
     @Override
     @SuppressWarnings("PMD.AvoidLiteralsInIfCondition")
     public String toString() {
@@ -147,4 +173,16 @@ public class VmPool {
             .flatMap(Function.identity()).collect(Collectors.toSet());
     }
 
+    /**
+     * Return the instant until which an assignment should be retained.
+     *
+     * @param lastUsed the last used
+     * @return the instant
+     */
+    public Instant retainUntil(Instant lastUsed) {
+        if (retention.startsWith("P")) {
+            return lastUsed.plus(Duration.parse(retention));
+        }
+        return Instant.parse(retention);
+    }
 }