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author | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:15:21 -0700 |
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committer | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:15:21 -0700 |
commit | 13d05bc8458758ee39cb829098241e89616717ee (patch) | |
tree | 22a4d1ce65f15952f07a3df5af4b462b4697cb3a /framework/src/onos/utils/nio/src/test/java/org/onlab/nio/TestMessageStream.java | |
parent | 6139282e1e93c2322076de4b91b1c85d0bc4a8b3 (diff) |
ONOS checkin based on commit tag e796610b1f721d02f9b0e213cf6f7790c10ecd60
Change-Id: Ife8810491034fe7becdba75dda20de4267bd15cd
Diffstat (limited to 'framework/src/onos/utils/nio/src/test/java/org/onlab/nio/TestMessageStream.java')
-rw-r--r-- | framework/src/onos/utils/nio/src/test/java/org/onlab/nio/TestMessageStream.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/framework/src/onos/utils/nio/src/test/java/org/onlab/nio/TestMessageStream.java b/framework/src/onos/utils/nio/src/test/java/org/onlab/nio/TestMessageStream.java new file mode 100644 index 00000000..fc86beb9 --- /dev/null +++ b/framework/src/onos/utils/nio/src/test/java/org/onlab/nio/TestMessageStream.java @@ -0,0 +1,89 @@ +/* + * Copyright 2014 Open Networking Laboratory + * + * Licensed 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.onlab.nio; + +import java.nio.ByteBuffer; +import java.nio.channels.ByteChannel; + +import static com.google.common.base.Preconditions.checkArgument; +import static com.google.common.base.Preconditions.checkState; + +/** + * Fixed-length message transfer buffer. + */ +public class TestMessageStream extends MessageStream<TestMessage> { + + private static final String E_WRONG_LEN = "Illegal message length: "; + private static final long START_TAG = 0xfeedcafedeaddeedL; + private static final long END_TAG = 0xbeadcafedeaddeedL; + private static final int META_LENGTH = 40; + + private final int length; + private boolean isStrict = true; + + public TestMessageStream(int length, ByteChannel ch, IOLoop<TestMessage, ?> loop) { + super(loop, ch, 64 * 1024, 500); + checkArgument(length >= META_LENGTH, "Length must be greater than header length of 40"); + this.length = length; + } + + void setNonStrict() { + isStrict = false; + } + + @Override + protected TestMessage read(ByteBuffer rb) { + if (rb.remaining() < length) { + return null; + } + + long startTag = rb.getLong(); + if (isStrict) { + checkState(startTag == START_TAG, "Incorrect message start"); + } + + long size = rb.getLong(); + long requestorTime = rb.getLong(); + long responderTime = rb.getLong(); + byte[] padding = padding(); + rb.get(padding); + + long endTag = rb.getLong(); + if (isStrict) { + checkState(endTag == END_TAG, "Incorrect message end"); + } + + return new TestMessage((int) size, requestorTime, responderTime, padding); + } + + @Override + protected void write(TestMessage message, ByteBuffer wb) { + if (message.length() != length) { + throw new IllegalArgumentException(E_WRONG_LEN + message.length()); + } + + wb.putLong(START_TAG); + wb.putLong(message.length()); + wb.putLong(message.requestorTime()); + wb.putLong(message.responderTime()); + wb.put(message.padding(), 0, length - META_LENGTH); + wb.putLong(END_TAG); + } + + public byte[] padding() { + return new byte[length - META_LENGTH]; + } +} |