Implement HostRetirer

1 files changed, 43 insertions, 0 deletions

diff --git a/config-provisioning/src/main/java/com/yahoo/config/provision/HostEvent.java b/config-provisioning/src/main/java/com/yahoo/config/provision/HostEvent.java
new file mode 100644
index 00000000000..e7108bd6182
--- /dev/null
+++ b/config-provisioning/src/main/java/com/yahoo/config/provision/HostEvent.java
@@ -0,0 +1,43 @@
+// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.config.provision;
+
+import java.util.Objects;
+
+/**
+ * A maintenance event for a host.
+ *
+ * @author mpolden
+ */
+public class HostEvent {
+
+    private final String id;
+    private final String hostId;
+    private final String description;
+
+    public HostEvent(String id, String hostId, String description) {
+        this.id = Objects.requireNonNull(id);
+        this.hostId = Objects.requireNonNull(hostId);
+        this.description = Objects.requireNonNull(description);
+    }
+
+    /** ID of the event */
+    public String id() {
+        return id;
+    }
+
+    /** ID of the host affected by this event, i.e. instance ID */
+    public String hostId() {
+        return hostId;
+    }
+
+    /** Human-readable description of the event */
+    public String description() {
+        return description;
+    }
+
+    @Override
+    public String toString() {
+        return "event " + id + " affecting host " + hostId + ": '" + description + "'";
+    }
+
+}