From f29a9136924a08407ae407151468630d2f8559ba Mon Sep 17 00:00:00 2001
From: Daniel Alfonsetti <daniel.alfonsetti@gmail.com>
Date: Mon, 21 Aug 2023 18:23:53 -0400
Subject: [PATCH] Exponential delay and jitter

---
 .../plugin/naginator/ExponentialDelay.java    | 59 +++++++++++++++++++
 .../naginator/ExponentialDelay/config.jelly   |  9 +++
 2 files changed, 68 insertions(+)
 create mode 100644 src/main/java/com/chikli/hudson/plugin/naginator/ExponentialDelay.java
 create mode 100644 src/main/resources/com/chikli/hudson/plugin/naginator/ExponentialDelay/config.jelly

diff --git a/src/main/java/com/chikli/hudson/plugin/naginator/ExponentialDelay.java b/src/main/java/com/chikli/hudson/plugin/naginator/ExponentialDelay.java
new file mode 100644
index 0000000..05367d2
--- /dev/null
+++ b/src/main/java/com/chikli/hudson/plugin/naginator/ExponentialDelay.java
@@ -0,0 +1,59 @@
+package com.chikli.hudson.plugin.naginator;
+
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import hudson.model.AbstractBuild;
+import org.kohsuke.stapler.DataBoundConstructor;
+import static java.lang.Math.min;
+
+/**
+ * Need to make a fork.
+ * Expontential delay
+ * @author <a href="mailto:daniel.alfonsetti@gmail.com">Daniel Alfonsetti</a>
+ */
+public class ExponentialDelay extends ScheduleDelay {
+
+    private int backoffBase;
+    private int max;
+
+    @DataBoundConstructor
+    public ExponentialDelay(int backoff_base, int max) {
+        this.backoffBase = backoff_base;
+        this.max = max;
+    }
+
+    public int getBackoffBase() {
+        return backoffBase;
+    }
+
+    public int getMax() {
+        return max;
+    }
+
+    // number of seconds.
+    @Override
+    public int computeScheduleDelay(AbstractBuild failedBuild) {
+        // int n = getRetryCount(failedBuild);
+        // // int delay = (int) Math.pow(this.backoffBase, n);
+        // int delay = 50+n;
+        // return max <= 0 ? delay : min(delay, max);
+        return 1;
+    }
+
+    private int getRetryCount(AbstractBuild<?, ?> failedBuild) {
+        NaginatorAction action = failedBuild.getAction(NaginatorAction.class);
+        if (action == null) {
+            return 0;
+        }
+        return action.getRetryCount();
+    }
+
+    @Extension
+    public static class DescriptorImpl extends ScheduleDelayDescriptor {
+        @NonNull
+        @Override
+        public String getDisplayName() {
+            return "Exponential";
+        }
+    }
+}
diff --git a/src/main/resources/com/chikli/hudson/plugin/naginator/ExponentialDelay/config.jelly b/src/main/resources/com/chikli/hudson/plugin/naginator/ExponentialDelay/config.jelly
new file mode 100644
index 0000000..cf8d261
--- /dev/null
+++ b/src/main/resources/com/chikli/hudson/plugin/naginator/ExponentialDelay/config.jelly
@@ -0,0 +1,9 @@
+<?jelly escape-by-default='true'?>
+<j:jelly xmlns:j="jelly:core" xmlns:f="/lib/form">
+  <f:entry title="backoff_base" field="backoff_base">
+    <f:textbox />
+  </f:entry>
+  <f:entry title="max" field="max">
+    <f:textbox />
+  </f:entry>
+</j:jelly>