Author: sebb
Date: Tue Jun 12 08:09:25 2007
New Revision: 546518
URL: http://svn.apache.org/viewvc?view=rev&rev=546518
Log:
Generic versions of slow streams
Added:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/CPSPauser.java
(with props)
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowInputStream.java
(with props)
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowOutputStream.java
(with props)
Added:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/CPSPauser.java
URL:
http://svn.apache.org/viewvc/jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/CPSPauser.java?view=auto&rev=546518
==============================================================================
---
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/CPSPauser.java
(added)
+++
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/CPSPauser.java
Tue Jun 12 08:09:25 2007
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.jmeter.util;
+
+/**
+ *
+ * Generate appropriate pauses for a given CPS (characters per second)
+ */
+public class CPSPauser{
+ private final int CPS; // Characters per second to emulate
+
+ // Conversions for milli and nano seconds
+ private static final int MS_PER_SEC = 1000;
+ private static final int NS_PER_SEC = 1000000000;
+ private static final int NS_PER_MS = NS_PER_SEC/MS_PER_SEC;
+
+ /**
+ * Create a pauser with the appropriate speed settings.
+ *
+ * @param cps CPS to emulate
+ */
+ public CPSPauser(int cps){
+ if (cps <=0) {
+ throw new IllegalArgumentException("Speed (cps) <= 0");
+ }
+ CPS=cps;
+ }
+
+ /**
+ * Pause for an appropriate time according to the number of bytes being
transferred.
+ *
+ * @param bytes number of bytes being transferred
+ */
+ public void pause(int bytes){
+ long sleepMS = (bytes*MS_PER_SEC)/CPS;
+ int sleepNS = ((bytes*MS_PER_SEC)/CPS) % NS_PER_MS;
+ try {
+ Thread.sleep(sleepMS,sleepNS);
+ } catch (InterruptedException ignored) {
+ }
+ }
+}
\ No newline at end of file
Propchange:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/CPSPauser.java
------------------------------------------------------------------------------
svn:eol-style = native
Propchange:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/CPSPauser.java
------------------------------------------------------------------------------
svn:keywords = Author Date Id Revision
Added:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowInputStream.java
URL:
http://svn.apache.org/viewvc/jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowInputStream.java?view=auto&rev=546518
==============================================================================
---
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowInputStream.java
(added)
+++
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowInputStream.java
Tue Jun 12 08:09:25 2007
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.jmeter.util;
+
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * InputStream wrapper to emulate a slow device, e.g. modem
+ *
+ */
+public class SlowInputStream extends FilterInputStream {
+
+ private final CPSPauser pauser;
+
+ /**
+ * Wraps the input stream to emulate a slow device
+ * @param in input stream
+ * @param cps characters per second to emulate
+ */
+ public SlowInputStream(InputStream in, int cps) {
+ super(in);
+ pauser = new CPSPauser(cps);
+ }
+
+ public int read() throws IOException {
+ pauser.pause(1);
+ return in.read();
+ }
+
+ // Also handles read(byte[])
+ public int read(byte[] b, int off, int len) throws IOException {
+ pauser.pause(len);
+ return in.read(b, off, len);
+ }
+
+}
Propchange:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowInputStream.java
------------------------------------------------------------------------------
svn:eol-style = native
Propchange:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowInputStream.java
------------------------------------------------------------------------------
svn:keywords = Author Date Id Revision
Added:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowOutputStream.java
URL:
http://svn.apache.org/viewvc/jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowOutputStream.java?view=auto&rev=546518
==============================================================================
---
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowOutputStream.java
(added)
+++
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowOutputStream.java
Tue Jun 12 08:09:25 2007
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.jmeter.util;
+
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * OutputStream filter to emulate a slow device, e.g. modem
+ *
+ */
+public class SlowOutputStream extends FilterOutputStream {
+
+ private final CPSPauser pauser;
+
+ /**
+ * Create wrapped Output Stream toe emulate the requested CPS.
+ * @param out OutputStream
+ * @param cps characters per second
+ */
+ public SlowOutputStream(OutputStream out, int cps) {
+ super(out);
+ pauser = new CPSPauser(cps);
+ }
+
+ // Also handles write(byte[])
+ public void write(byte[] b, int off, int len) throws IOException {
+ pauser.pause(len);
+ out.write(b, off, len);
+ }
+
+ public void write(int b) throws IOException {
+ pauser.pause(1);
+ out.write(b);
+ }
+}
Propchange:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowOutputStream.java
------------------------------------------------------------------------------
svn:eol-style = native
Propchange:
jakarta/jmeter/branches/rel-2-2/src/core/org/apache/jmeter/util/SlowOutputStream.java
------------------------------------------------------------------------------
svn:keywords = Author Date Id Revision
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
