Exponential delay and jitter

src/main/java/com/chikli/hudson/plugin/naginator/ExponentialDelay.java

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+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:[email protected]">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";
+        }
+    }
+}

src/main/resources/com/chikli/hudson/plugin/naginator/ExponentialDelay/config.jelly

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+<?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>