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1 files changed, 61 insertions, 0 deletions

diff --git a/node-repository/src/main/java/com/yahoo/vespa/hosted/provision/node/filter/ApplicationFilter.java b/node-repository/src/main/java/com/yahoo/vespa/hosted/provision/node/filter/ApplicationFilter.java
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+++ b/node-repository/src/main/java/com/yahoo/vespa/hosted/provision/node/filter/ApplicationFilter.java
@@ -0,0 +1,61 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.vespa.hosted.provision.node.filter;
+
+import com.google.common.collect.ImmutableSet;
+import com.yahoo.config.provision.ApplicationId;
+import com.yahoo.config.provision.ApplicationName;
+import com.yahoo.config.provision.ClusterMembership;
+import com.yahoo.config.provision.HostFilter;
+import com.yahoo.config.provision.InstanceName;
+import com.yahoo.config.provision.TenantName;
+import com.yahoo.vespa.hosted.provision.Node;
+
+import java.util.Collections;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * A node filter which matches a set of applications.
+ *
+ * @author bratseth
+ */
+public class ApplicationFilter extends NodeFilter {
+
+    private final Set<ApplicationId> applications;
+
+    /** Creates a node filter which filters using the given host filter */
+    private ApplicationFilter(Set<ApplicationId> applications, NodeFilter next) {
+        super(next);
+        Objects.requireNonNull(applications, "Applications set cannot be null, use an empty set");
+        this.applications = applications;
+    }
+
+    @Override
+    public boolean matches(Node node) {
+        if ( ! applications.isEmpty() && ! (node.allocation().isPresent() && applications.contains(node.allocation().get().owner()))) return false;
+        return nextMatches(node);
+    }
+
+    public static ApplicationFilter from(ApplicationId applicationId, NodeFilter next) {
+        return new ApplicationFilter(ImmutableSet.of(applicationId), next);
+    }
+
+    public static ApplicationFilter from(Set<ApplicationId> applicationIds, NodeFilter next) {
+        return new ApplicationFilter(ImmutableSet.copyOf(applicationIds), next);
+    }
+
+    public static ApplicationFilter from(String applicationIds, NodeFilter next) {
+        return new ApplicationFilter(HostFilter.split(applicationIds).stream().map(ApplicationFilter::toApplicationId).collect(Collectors.toSet()), next);
+    }
+
+    public static ApplicationId toApplicationId(String applicationIdString) {
+        String[] parts = applicationIdString.split("\\.");
+        if (parts.length != 3)
+            throw new IllegalArgumentException("Application id must be on the form tenant.application.instance, got '" +
+                                               applicationIdString + "'");
+        return ApplicationId.from(TenantName.from(parts[0]), ApplicationName.from(parts[1]), InstanceName.from(parts[2]));
+    }
+
+}