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Posted to dev@tomcat.apache.org by ma...@apache.org on 2020/10/09 17:30:52 UTC

[tomcat] branch 9.0.x updated: Partial fix for BZ 63362 provide h2 request statistics

This is an automated email from the ASF dual-hosted git repository.

markt pushed a commit to branch 9.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git


The following commit(s) were added to refs/heads/9.0.x by this push:
     new 708b169  Partial fix for BZ 63362 provide h2 request statistics
708b169 is described below

commit 708b1694de60e8c1fd0c3635da2f5a1aa701970f
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Wed Jun 24 19:24:17 2020 +0100

    Partial fix for BZ 63362 provide h2 request statistics
---
 java/org/apache/coyote/AbstractProtocol.java      | 35 +++++++++++++----
 java/org/apache/coyote/LocalStrings.properties    |  1 +
 java/org/apache/coyote/UpgradeProtocol.java       | 46 ++++++++++++++++++++++
 java/org/apache/coyote/http2/Http2Protocol.java   | 48 +++++++++++++++++++++--
 java/org/apache/coyote/http2/StreamProcessor.java |  6 +++
 webapps/docs/changelog.xml                        |  4 ++
 6 files changed, 130 insertions(+), 10 deletions(-)

diff --git a/java/org/apache/coyote/AbstractProtocol.java b/java/org/apache/coyote/AbstractProtocol.java
index d9bab30..ab9dd38 100644
--- a/java/org/apache/coyote/AbstractProtocol.java
+++ b/java/org/apache/coyote/AbstractProtocol.java
@@ -69,12 +69,6 @@ public abstract class AbstractProtocol<S> implements ProtocolHandler,
 
 
     /**
-     * Name of MBean for the Global Request Processor.
-     */
-    protected ObjectName rgOname = null;
-
-
-    /**
      * Unique ID for this connector. Only used if the connector is configured
      * to use a random port as the port will change if stop(), start() is
      * called.
@@ -145,6 +139,14 @@ public abstract class AbstractProtocol<S> implements ProtocolHandler,
     // ------------------------------- Properties managed by the ProtocolHandler
 
     /**
+     * Name of MBean for the Global Request Processor.
+     */
+    protected ObjectName rgOname = null;
+    public ObjectName getGlobalRequestProcessorMBeanName() {
+        return rgOname;
+    }
+
+    /**
      * The adapter provides the link between the ProtocolHandler and the
      * connector.
      */
@@ -569,7 +571,8 @@ public abstract class AbstractProtocol<S> implements ProtocolHandler,
         }
 
         if (this.domain != null) {
-            rgOname = new ObjectName(domain + ":type=GlobalRequestProcessor,name=" + getName());
+            ObjectName rgOname = new ObjectName(domain + ":type=GlobalRequestProcessor,name=" + getName());
+            this.rgOname = rgOname;
             Registry.getRegistry(null, null).registerComponent(
                     getHandler().getGlobal(), rgOname, null);
         }
@@ -579,6 +582,13 @@ public abstract class AbstractProtocol<S> implements ProtocolHandler,
         endpoint.setDomain(domain);
 
         endpoint.init();
+
+        UpgradeProtocol[] upgradeProtocols = findUpgradeProtocols();
+        for (UpgradeProtocol upgradeProtocol : upgradeProtocols) {
+            // Implementation note: Failure of one upgrade protocol fails the
+            // whole Connector
+            upgradeProtocol.init();
+        }
     }
 
 
@@ -692,6 +702,16 @@ public abstract class AbstractProtocol<S> implements ProtocolHandler,
             logPortOffset();
         }
 
+        UpgradeProtocol[] upgradeProtocols = findUpgradeProtocols();
+        for (UpgradeProtocol upgradeProtocol : upgradeProtocols) {
+            try {
+                upgradeProtocol.destroy();
+            } catch (Throwable t) {
+                ExceptionUtils.handleThrowable(t);
+                getLog().error(sm.getString("abstractProtocol.upgradeProtocolDestroyError"), t);
+            }
+        }
+
         try {
             endpoint.destroy();
         } finally {
@@ -709,6 +729,7 @@ public abstract class AbstractProtocol<S> implements ProtocolHandler,
                 }
             }
 
+            ObjectName rgOname = getGlobalRequestProcessorMBeanName();
             if (rgOname != null) {
                 Registry.getRegistry(null, null).unregisterComponent(rgOname);
             }
diff --git a/java/org/apache/coyote/LocalStrings.properties b/java/org/apache/coyote/LocalStrings.properties
index 83960cb..43c8d64 100644
--- a/java/org/apache/coyote/LocalStrings.properties
+++ b/java/org/apache/coyote/LocalStrings.properties
@@ -36,6 +36,7 @@ abstractProcessor.socket.ssl=Exception getting SSL attributes
 abstractProtocol.mbeanDeregistrationFailed=Failed to deregister MBean named [{0}] from MBean server [{1}]
 abstractProtocol.processorRegisterError=Error registering request processor
 abstractProtocol.processorUnregisterError=Error unregistering request processor
+abstractProtocol.upgradeProtocolDestroyError=Error destroying upgrade protocol
 abstractProtocol.waitingProcessor.add=Added processor [{0}] to waiting processors
 abstractProtocol.waitingProcessor.remove=Removed processor [{0}] from waiting processors
 
diff --git a/java/org/apache/coyote/UpgradeProtocol.java b/java/org/apache/coyote/UpgradeProtocol.java
index dc840df..50fe6c3 100644
--- a/java/org/apache/coyote/UpgradeProtocol.java
+++ b/java/org/apache/coyote/UpgradeProtocol.java
@@ -16,6 +16,7 @@
  */
 package org.apache.coyote;
 
+import org.apache.coyote.http11.AbstractHttp11Protocol;
 import org.apache.coyote.http11.upgrade.InternalHttpUpgradeHandler;
 import org.apache.tomcat.util.net.SocketWrapperBase;
 
@@ -104,7 +105,52 @@ public interface UpgradeProtocol {
      *                 handle any connections passed to this UpgradeProtocol via
      *                 the HTTP upgrade mechanism
      */
+    public default void setHttp11Protocol(AbstractHttp11Protocol<?> protocol) {
+        // NO-OP
+    }
+
+    /**
+     * Configure the HTTP/1.1 protocol that this UpgradeProcotol is nested
+     * under. Connections passed to this UpgradeProtocol via HTTP upgrade will
+     * have been initially handled by this HTTP/1.1 protocol implementation.
+     * <p>
+     * The default implementation is to call
+     * {@link #setHttp11Protocol(AbstractHttp11Protocol)} if protocol is an
+     * instance of {@link AbstractHttp11Protocol} else this is a NO-OP.
+     *
+     * @param protocol The HTTP/1.1 protocol implementation that will initially
+     *                 handle any connections passed to this UpgradeProtocol via
+     *                 the HTTP upgrade mechanism
+     *
+     * @deprecated This will be removed in Tomcat 10. Use
+     *             {@link #setHttp11Protocol(AbstractHttp11Protocol)} instead
+     */
+    @Deprecated
     public default void setHttp11Protocol(AbstractProtocol<?> protocol) {
+        if (protocol instanceof AbstractHttp11Protocol) {
+            setHttp11Protocol((AbstractHttp11Protocol<?>) protocol);
+        }
+    }
+
+
+    /**
+     * Initialise the upgrade protocol. Called once the parent HTTP/1.1 protocol
+     * has initialised.
+     *
+     * @throws Exception If initialisation fails
+     */
+    public default void init() throws Exception {
+        // NO-OP
+    }
+
+
+    /**
+     * Destroy the upgrade protocol. Called before the parent HTTP/1.1 protocol
+     * is destroyed.
+     *
+     * @throws Exception If the upgrade protocol is not destroyed cleanly
+     */
+    public default void destroy() throws Exception {
         // NO-OP
     }
 }
diff --git a/java/org/apache/coyote/http2/Http2Protocol.java b/java/org/apache/coyote/http2/Http2Protocol.java
index 78c0395..b61fe55 100644
--- a/java/org/apache/coyote/http2/Http2Protocol.java
+++ b/java/org/apache/coyote/http2/Http2Protocol.java
@@ -27,12 +27,15 @@ import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.regex.Pattern;
 
+import javax.management.ObjectName;
+
 import org.apache.coyote.AbstractProtocol;
 import org.apache.coyote.Adapter;
 import org.apache.coyote.CompressionConfig;
 import org.apache.coyote.ContinueResponseTiming;
 import org.apache.coyote.Processor;
 import org.apache.coyote.Request;
+import org.apache.coyote.RequestGroupInfo;
 import org.apache.coyote.Response;
 import org.apache.coyote.UpgradeProtocol;
 import org.apache.coyote.UpgradeToken;
@@ -40,6 +43,7 @@ import org.apache.coyote.http11.AbstractHttp11Protocol;
 import org.apache.coyote.http11.upgrade.InternalHttpUpgradeHandler;
 import org.apache.coyote.http11.upgrade.UpgradeProcessorInternal;
 import org.apache.tomcat.util.buf.StringUtils;
+import org.apache.tomcat.util.modeler.Registry;
 import org.apache.tomcat.util.net.SocketWrapperBase;
 
 public class Http2Protocol implements UpgradeProtocol {
@@ -95,7 +99,10 @@ public class Http2Protocol implements UpgradeProtocol {
     // Compression
     private final CompressionConfig compressionConfig = new CompressionConfig();
     // Reference to HTTP/1.1 protocol that this instance is configured under
-    private AbstractProtocol<?> http11Protocol = null;
+    private AbstractHttp11Protocol<?> http11Protocol = null;
+
+    private RequestGroupInfo global = new RequestGroupInfo();
+    private ObjectName rgOname = null;
 
     @Override
     public String getHttpUpgradeName(boolean isSSLEnabled) {
@@ -426,15 +433,50 @@ public class Http2Protocol implements UpgradeProtocol {
 
 
     public ContinueResponseTiming getContinueResponseTimingInternal() {
-        return ((AbstractHttp11Protocol<?>) http11Protocol).getContinueResponseTimingInternal();
+        return http11Protocol.getContinueResponseTimingInternal();
     }
 
 
     public AbstractProtocol<?> getHttp11Protocol() {
         return this.http11Protocol;
     }
+
+
     @Override
-    public void setHttp11Protocol(AbstractProtocol<?> http11Protocol) {
+    public void setHttp11Protocol(AbstractHttp11Protocol<?> http11Protocol) {
         this.http11Protocol = http11Protocol;
     }
+
+
+    public RequestGroupInfo getGlobal() {
+        return global;
+    }
+
+
+    @Override
+    public void init() throws Exception {
+        ObjectName parentRgOname = http11Protocol.getGlobalRequestProcessorMBeanName();
+        if (parentRgOname != null) {
+            StringBuilder name = new StringBuilder(parentRgOname.getCanonicalName());
+            name.append(",Upgrade=");
+            // Neither of these names need quoting
+            if (http11Protocol.isSSLEnabled()) {
+                name.append(ALPN_NAME);
+            } else {
+                name.append(HTTP_UPGRADE_NAME);
+            }
+            ObjectName rgOname = new ObjectName(name.toString());
+            this.rgOname = rgOname;
+            Registry.getRegistry(null, null).registerComponent(global, rgOname, null);
+        }
+    }
+
+
+    @Override
+    public void destroy() throws Exception {
+        ObjectName rgOname = this.rgOname;
+        if (rgOname != null) {
+            Registry.getRegistry(null, null).unregisterComponent(rgOname);
+        }
+    }
 }
diff --git a/java/org/apache/coyote/http2/StreamProcessor.java b/java/org/apache/coyote/http2/StreamProcessor.java
index 94904c0..98c86cb 100644
--- a/java/org/apache/coyote/http2/StreamProcessor.java
+++ b/java/org/apache/coyote/http2/StreamProcessor.java
@@ -371,6 +371,12 @@ class StreamProcessor extends AbstractProcessor {
     @Override
     public final void recycle() {
         // StreamProcessor instances are not re-used.
+
+        // Calling removeRequestProcessor even though the RequestProcesser was
+        // never added will add the values from the RequestProcessor to the
+        // running total for the GlobalRequestProcessor
+        handler.getProtocol().getGlobal().removeRequestProcessor(request.getRequestProcessor());
+
         // Clear fields that can be cleared to aid GC and trigger NPEs if this
         // is reused
         setSocketWrapper(null);
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index 2cc3d22..2d5388c 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -69,6 +69,10 @@
         and the encoded solidus was preceeded by other %nn encoded characters.
         Based on a pull request by willmeck. (markt)
       </fix>
+      <fix>
+        Implement a partial fix for <bug>63362</bug> that adds collection of
+        request statistics for HTTP/2 requests. (markt)
+      </fix>
     </changelog>
   </subseciton>
   <subsection name="Jasper">


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