diff options
Diffstat (limited to 'framework/src/onos/protocols/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/utils/JsonRpcReaderUtil.java')
| -rw-r--r-- | framework/src/onos/protocols/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/utils/JsonRpcReaderUtil.java | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/framework/src/onos/protocols/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/utils/JsonRpcReaderUtil.java b/framework/src/onos/protocols/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/utils/JsonRpcReaderUtil.java deleted file mode 100644 index 2a88199d..00000000 --- a/framework/src/onos/protocols/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/utils/JsonRpcReaderUtil.java +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Copyright 2015 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.onosproject.ovsdb.rfc.utils; - -import io.netty.buffer.ByteBuf; -import io.netty.buffer.ByteBufInputStream; - -import java.io.IOException; -import java.util.List; -import java.util.Stack; - -import org.onosproject.ovsdb.rfc.exception.UnsupportedException; -import org.onosproject.ovsdb.rfc.jsonrpc.JsonReadContext; - -import com.fasterxml.jackson.core.JsonEncoding; -import com.fasterxml.jackson.core.JsonParseException; -import com.fasterxml.jackson.core.JsonParser; -import com.fasterxml.jackson.core.io.IOContext; -import com.fasterxml.jackson.core.json.ByteSourceJsonBootstrapper; -import com.fasterxml.jackson.core.util.BufferRecycler; -import com.fasterxml.jackson.databind.JsonNode; -import com.fasterxml.jackson.databind.MappingJsonFactory; - -/** - * Decoder utility class. - */ -public final class JsonRpcReaderUtil { - - /** - * Constructs a JsonRpcReaderUtil object. Utility classes should not have a - * public or default constructor, otherwise IDE will compile unsuccessfully. - * This class should not be instantiated. - */ - private JsonRpcReaderUtil() { - } - - /** - * Decode the bytes to Json object. - * @param in input of bytes - * @param out ouput of Json object list - * @param jrContext context for the last decoding process - * @throws IOException IOException - * @throws JsonParseException JsonParseException - */ - public static void readToJsonNode(ByteBuf in, List<Object> out, JsonReadContext jrContext) - throws JsonParseException, IOException { - int lastReadBytes = jrContext.getLastReadBytes(); - if (lastReadBytes == 0) { - if (in.readableBytes() < 4) { - return; - } - checkEncoding(in); - } - - int i = lastReadBytes + in.readerIndex(); - Stack<Byte> bufStack = jrContext.getBufStack(); - for (; i < in.writerIndex(); i++) { - byte b = in.getByte(i); - switch (b) { - case '{': - if (!isDoubleQuote(bufStack)) { - bufStack.push(b); - jrContext.setStartMatch(true); - } - break; - case '}': - if (!isDoubleQuote(bufStack)) { - bufStack.pop(); - } - break; - case '"': - if (in.getByte(i - 1) != '\\') { - if (!bufStack.isEmpty() && bufStack.peek() != '"') { - bufStack.push(b); - } else { - bufStack.pop(); - } - } - break; - default: - break; - } - - if (jrContext.isStartMatch() && bufStack.isEmpty()) { - ByteBuf buf = in.readSlice(i - in.readerIndex() + 1); - JsonParser jf = new MappingJsonFactory().createParser(new ByteBufInputStream(buf)); - JsonNode jsonNode = jf.readValueAsTree(); - out.add(jsonNode); - lastReadBytes = 0; - jrContext.setLastReadBytes(lastReadBytes); - break; - } - } - - if (i >= in.writerIndex()) { - lastReadBytes = in.readableBytes(); - jrContext.setLastReadBytes(lastReadBytes); - } - } - - /** - * Filter the invalid characters before decoding. - * @param in input of bytes - * @param lastReadBytes the bytes for last decoding incomplete record - */ - private static void fliterCharaters(ByteBuf in) { - while (in.isReadable()) { - int ch = in.getByte(in.readerIndex()); - if ((ch != ' ') && (ch != '\n') && (ch != '\t') && (ch != '\r')) { - break; - } else { - in.readByte(); - } - } - } - - /** - * Check whether the peek of the stack element is double quote. - * @param jrContext context for the last decoding process - * @return boolean - */ - private static boolean isDoubleQuote(Stack<Byte> bufStack) { - if (!bufStack.isEmpty() && bufStack.peek() == '"') { - return true; - } - return false; - } - - /** - * Check whether the encoding is valid. - * @param in input of bytes - * @throws IOException this is an IO exception - * @throws UnsupportedException this is an unsupported exception - */ - private static void checkEncoding(ByteBuf in) throws IOException { - int inputStart = 0; - int inputLength = 4; - fliterCharaters(in); - byte[] buff = new byte[4]; - in.getBytes(in.readerIndex(), buff); - ByteSourceJsonBootstrapper strapper = new ByteSourceJsonBootstrapper(new IOContext(new BufferRecycler(), - null, - false), - buff, inputStart, - inputLength); - JsonEncoding jsonEncoding = strapper.detectEncoding(); - if (!JsonEncoding.UTF8.equals(jsonEncoding)) { - throw new UnsupportedException("Only UTF-8 encoding is supported."); - } - } - -} |