Poll for spot instances instead of JNLP launcher JENKINS-27529 JENKIN…

…S-19059 * No more need for special spot startup script. * Changes spot slave name to use spot request ID (partially fixes JENKINS-32399)
jenkinsci · Jan 26, 2016 · ae7e53a · ae7e53a
1 parent 882379a
commit ae7e53a
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Showing 7 changed files with 44 additions and 87 deletions.
diff --git a/src/main/java/hudson/plugins/ec2/EC2AbstractSlave.java b/src/main/java/hudson/plugins/ec2/EC2AbstractSlave.java
@@ -46,7 +46,6 @@
 import net.sf.json.JSONObject;
 
 import org.apache.commons.lang.StringUtils;
-import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.QueryParameter;
 import org.kohsuke.stapler.StaplerRequest;
 
@@ -121,7 +120,6 @@ public abstract class EC2AbstractSlave extends Slave {
 
     public static final String TEST_ZONE = "testZone";
 
-    @DataBoundConstructor
     public EC2AbstractSlave(String name, String instanceId, String description, String remoteFS, int numExecutors, Mode mode, String labelString, ComputerLauncher launcher, RetentionStrategy<EC2Computer> retentionStrategy, String initScript, String tmpDir, List<? extends NodeProperty<?>> nodeProperties, String remoteAdmin, String jvmopts, boolean stopOnTerminate, String idleTerminationMinutes, List<EC2Tag> tags, String cloudName, boolean usePrivateDnsName, boolean useDedicatedTenancy, int launchTimeout, AMITypeData amiType)
             throws FormException, IOException {
 

diff --git a/src/main/java/hudson/plugins/ec2/EC2ComputerLauncher.java b/src/main/java/hudson/plugins/ec2/EC2ComputerLauncher.java
@@ -51,6 +51,26 @@ public abstract class EC2ComputerLauncher extends ComputerLauncher {
     public void launch(SlaveComputer _computer, TaskListener listener) {
         try {
             EC2Computer computer = (EC2Computer) _computer;
+
+            while (true) {
+                String instanceId = computer.getInstanceId();
+                if (instanceId != null && !instanceId.equals("")) {
+                    break;
+                }
+                // Only spot slaves can have no instance id.
+                EC2SpotSlave ec2Slave = (EC2SpotSlave) computer.getNode();
+                if (ec2Slave.isSpotRequestDead()) {
+                    // Terminate launch
+                    return;
+                }
+                final String msg = "Node " + computer.getName() + "(SpotRequest " + computer.getSpotInstanceRequestId() +
+                    ") still requesting the instance, waiting 10s";
+                // report to system log and console
+                ((EC2Computer) _computer).getCloud().log(LOGGER, Level.FINEST, listener, msg);
+                // check every 10 seconds if in spot request phase
+                Thread.sleep(10000);
+            }
+
             final String baseMsg = "Node " + computer.getName() + "(" + computer.getInstanceId() + ")";
             String msg;
 
@@ -91,10 +111,10 @@ public void launch(SlaveComputer _computer, TaskListener listener) {
                     break;
                 }
 
+                // report to system log and console
+                ((EC2Computer) _computer).getCloud().log(LOGGER, Level.FINEST, listener, msg);
                 // check every 5 secs
                 Thread.sleep(5000);
-                // and report to system log and console
-                ((EC2Computer) _computer).getCloud().log(LOGGER, Level.FINEST, listener, msg);
             }
 
             launch(computer, listener, computer.describeInstance());

diff --git a/src/main/java/hudson/plugins/ec2/EC2SpotComputerLauncher.java b/src/main/java/hudson/plugins/ec2/EC2SpotComputerLauncher.java
diff --git a/src/main/java/hudson/plugins/ec2/EC2SpotRetentionStrategy.java b/src/main/java/hudson/plugins/ec2/EC2SpotRetentionStrategy.java
diff --git a/src/main/java/hudson/plugins/ec2/EC2SpotSlave.java b/src/main/java/hudson/plugins/ec2/EC2SpotSlave.java
@@ -15,11 +15,14 @@
 import com.amazonaws.services.ec2.model.DescribeSpotInstanceRequestsRequest;
 import com.amazonaws.services.ec2.model.DescribeSpotInstanceRequestsResult;
 import com.amazonaws.services.ec2.model.SpotInstanceRequest;
+import com.amazonaws.services.ec2.model.SpotInstanceState;
 import com.amazonaws.services.ec2.model.TerminateInstancesRequest;
 
 import hudson.Extension;
 import hudson.model.Hudson;
 import hudson.model.Descriptor.FormException;
+import hudson.plugins.ec2.ssh.EC2UnixLauncher;
+import hudson.plugins.ec2.win.EC2WindowsLauncher;
 import hudson.slaves.NodeProperty;
 
 public final class EC2SpotSlave extends EC2AbstractSlave {
@@ -28,18 +31,25 @@ public final class EC2SpotSlave extends EC2AbstractSlave {
 
     public EC2SpotSlave(String name, String spotInstanceRequestId, String description, String remoteFS, int numExecutors, Mode mode, String initScript, String tmpDir, String labelString, String remoteAdmin, String jvmopts, String idleTerminationMinutes, List<EC2Tag> tags, String cloudName, boolean usePrivateDnsName, int launchTimeout, AMITypeData amiType)
             throws FormException, IOException {
-        this(name, spotInstanceRequestId, description, remoteFS, numExecutors, mode, initScript, tmpDir, labelString, Collections.<NodeProperty<?>> emptyList(), remoteAdmin, jvmopts, idleTerminationMinutes, tags, cloudName, usePrivateDnsName, launchTimeout, amiType);
+        this(description + " (" + name + ")", spotInstanceRequestId, description, remoteFS, numExecutors, mode, initScript, tmpDir, labelString, Collections.<NodeProperty<?>> emptyList(), remoteAdmin, jvmopts, idleTerminationMinutes, tags, cloudName, usePrivateDnsName, launchTimeout, amiType);
     }
 
     @DataBoundConstructor
     public EC2SpotSlave(String name, String spotInstanceRequestId, String description, String remoteFS, int numExecutors, Mode mode, String initScript, String tmpDir, String labelString, List<? extends NodeProperty<?>> nodeProperties, String remoteAdmin, String jvmopts, String idleTerminationMinutes, List<EC2Tag> tags, String cloudName, boolean usePrivateDnsName, int launchTimeout, AMITypeData amiType)
             throws FormException, IOException {
 
-        super(name, "", description, remoteFS, numExecutors, mode, labelString, new EC2SpotComputerLauncher(), new EC2SpotRetentionStrategy(idleTerminationMinutes), initScript, tmpDir, nodeProperties, remoteAdmin, jvmopts, false, idleTerminationMinutes, tags, cloudName, usePrivateDnsName, false, launchTimeout, amiType);
+        super(name, "", description, remoteFS, numExecutors, mode, labelString, amiType.isWindows() ? new EC2WindowsLauncher() :
+                new EC2UnixLauncher(), new EC2RetentionStrategy(idleTerminationMinutes), initScript, tmpDir, nodeProperties, remoteAdmin, jvmopts, false, idleTerminationMinutes, tags, cloudName, usePrivateDnsName, false, launchTimeout, amiType);
+
         this.name = name;
         this.spotInstanceRequestId = spotInstanceRequestId;
     }
 
+    @Override
+    protected boolean isAlive(boolean force) {
+        return super.isAlive(force) || !this.isSpotRequestDead();
+    }
+
     /**
      * Cancel the spot request for the instance. Terminate the instance if it is up. Remove the slave from Jenkins.
      */
@@ -58,7 +68,7 @@ public void terminate() {
 
 				// Terminate the slave if it is running
 				if (instanceId != null && !instanceId.equals("")) {
-					if (!isAlive(true)) {
+					if (!super.isAlive(true)) {
 						/*
 						 * The node has been killed externally, so we've nothing to do here
 						 */
@@ -123,6 +133,13 @@ SpotInstanceRequest getSpotRequest() {
         return siRequests.get(0);
     }
 
+    public boolean isSpotRequestDead() {
+        SpotInstanceState requestState = SpotInstanceState.fromValue(this.getSpotRequest().getState());
+        return requestState == SpotInstanceState.Cancelled
+                || requestState == SpotInstanceState.Closed
+                || requestState == SpotInstanceState.Failed;
+    }
+
     /**
      * Accessor for the spotInstanceRequestId
      */

diff --git a/src/main/java/hudson/plugins/ec2/SlaveTemplate.java b/src/main/java/hudson/plugins/ec2/SlaveTemplate.java
@@ -725,43 +725,7 @@ private EC2AbstractSlave provisionSpot(TaskListener listener) throws AmazonClien
                 }
             }
 
-            // The slave must know the Jenkins server to register with as well
-            // as the name of the node in Jenkins it should register as. The
-            // only
-            // way to give information to the Spot slaves is through the ec2
-            // user data
-            String jenkinsUrl = Hudson.getInstance().getRootUrl();
-            // We must provide a unique node name for the slave to connect to
-            // Jenkins.
-            // We don't have the EC2 generated instance ID, or the Spot request
-            // ID
-            // until after the instance is requested, which is then too late to
-            // set the
-            // user-data for the request. Instead we generate a unique name from
-            // UUID
-            // so that the slave has a unique name within Jenkins to register
-            // to.
-            String slaveName = UUID.randomUUID().toString();
-            String newUserData = "";
-
-            // We want to allow node configuration with cloud-init and
-            // user-data,
-            // while maintaining backward compatibility with old ami's
-            // The 'new' way is triggered by the presence of '${SLAVE_NAME}'' in
-            // the user data
-            // (which is not too much to ask)
-            if (userData.contains("${SLAVE_NAME}")) {
-                // The cloud-init compatible way
-                newUserData = new String(userData);
-                newUserData = newUserData.replace("${SLAVE_NAME}", slaveName);
-                newUserData = newUserData.replace("${JENKINS_URL}", jenkinsUrl);
-            } else {
-                // The 'old' way - maitain full backward compatibility
-                newUserData = "JENKINS_URL=" + jenkinsUrl + "&SLAVE_NAME=" + slaveName + "&USER_DATA="
-                        + Base64.encodeBase64String(userData.getBytes());
-            }
-
-            String userDataString = Base64.encodeBase64String(newUserData.getBytes());
+            String userDataString = Base64.encodeBase64String(userData.getBytes());
 
             launchSpecification.setUserData(userDataString);
             launchSpecification.setKeyName(keyPair.getKeyName());
@@ -808,6 +772,7 @@ private EC2AbstractSlave provisionSpot(TaskListener listener) throws AmazonClien
             if (spotInstReq == null) {
                 throw new AmazonClientException("Spot instance request is null");
             }
+            String slaveName = spotInstReq.getSpotInstanceRequestId();
 
             /* Now that we have our Spot request, we can set tags on it */
             if (inst_tags != null) {

diff --git a/src/main/resources/hudson/plugins/ec2/SlaveTemplate/config.jelly b/src/main/resources/hudson/plugins/ec2/SlaveTemplate/config.jelly
@@ -50,13 +50,6 @@ THE SOFTWARE.
   </f:entry>
 
   <f:optionalBlock name="spotConfig" title="Use Spot Instance" checked="${instance.spotConfig != null}">
-    <f:description>Be aware, AMIs used for Spot slaves must be configured to callback to Jenkins when
-    a Spot request has been fulfilled and the instance has become available. The call back script can
-    be found by clicking the following link. <a href="${resURL}/plugin/ec2/AMI-Scripts/ubuntu-ami-setup.sh">Ubuntu-ami-setup</a>
-    </f:description>
-    <f:description>Slaves designated as Spot slaves will initially show up as disconnected. The state
-    will change to connecting when a Spot request has been fulfilled. </f:description>
-
     <f:validateButton title="${%Check Current Spot Price}" progress="${%Checking...}" method="currentSpotPrice" with="useInstanceProfileForCredentials,accessId,secretKey,region,type,zone" />
 
     <f:entry title="${%Spot Max Bid Price}" field="spotMaxBidPrice">