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Merge pull request #221 from ropalka/WEJBHTTP-140_round1
[WEJBHTTP-140] First round of refactorings in TXN part - focus on client side of the protocol
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143 changes: 143 additions & 0 deletions
143
transaction/src/main/java/org/wildfly/httpclient/transaction/RequestBuilder.java
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| @@ -0,0 +1,143 @@ | ||
| /* | ||
| * JBoss, Home of Professional Open Source. | ||
| * Copyright 2024 Red Hat, Inc., and individual contributors | ||
| * as indicated by the @author tags. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
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| package org.wildfly.httpclient.transaction; | ||
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| import static io.undertow.util.Headers.ACCEPT; | ||
| import static io.undertow.util.Headers.CONTENT_TYPE; | ||
| import static java.net.URLEncoder.encode; | ||
| import static java.nio.charset.StandardCharsets.UTF_8; | ||
| import static org.wildfly.httpclient.common.Protocol.VERSION_PATH; | ||
| import static org.wildfly.httpclient.transaction.RequestType.UT_BEGIN; | ||
| import static org.wildfly.httpclient.transaction.RequestType.XA_COMMIT; | ||
| import static org.wildfly.httpclient.transaction.RequestType.XA_RECOVER; | ||
| import static org.wildfly.httpclient.transaction.TransactionConstants.EXCEPTION; | ||
| import static org.wildfly.httpclient.transaction.TransactionConstants.NEW_TRANSACTION; | ||
| import static org.wildfly.httpclient.transaction.TransactionConstants.RECOVERY_FLAGS; | ||
| import static org.wildfly.httpclient.transaction.TransactionConstants.RECOVERY_PARENT_NAME; | ||
| import static org.wildfly.httpclient.transaction.TransactionConstants.TIMEOUT; | ||
| import static org.wildfly.httpclient.transaction.TransactionConstants.TXN_CONTEXT; | ||
| import static org.wildfly.httpclient.transaction.TransactionConstants.XID; | ||
| import static org.wildfly.httpclient.transaction.TransactionConstants.XID_LIST; | ||
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| import io.undertow.client.ClientRequest; | ||
| import io.undertow.util.HeaderMap; | ||
| import org.wildfly.httpclient.common.Protocol; | ||
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| /** | ||
| * HTTP TXN module client request builder. Encapsulates all information needed to create HTTP TXN client requests. | ||
| * Use setter methods (those returning {@link RequestBuilder}) to configure the builder. | ||
| * Once configured {@link #createRequest(String)} method must be called to build HTTP client request. | ||
| * | ||
| * @author <a href="mailto:[email protected]">Richard Opalka</a> | ||
| */ | ||
| final class RequestBuilder { | ||
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| private RequestType requestType; | ||
| private int version = Protocol.LATEST; | ||
| private int timeout; | ||
| private int flags; | ||
| private String parentName; | ||
| private Boolean onePhase; | ||
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| // setters | ||
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| RequestBuilder setRequestType(final RequestType requestType) { | ||
| this.requestType = requestType; | ||
| return this; | ||
| } | ||
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| RequestBuilder setVersion(final int version) { | ||
| this.version = version; | ||
| return this; | ||
| } | ||
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| RequestBuilder setTimeout(final int timeout) { | ||
| this.timeout = timeout; | ||
| return this; | ||
| } | ||
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| RequestBuilder setFlags(final int flags) { | ||
| this.flags = flags; | ||
| return this; | ||
| } | ||
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| RequestBuilder setOnePhase(final Boolean onePhase) { | ||
| this.onePhase = onePhase; | ||
| return this; | ||
| } | ||
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| RequestBuilder setParent(final String parentName) { | ||
| this.parentName = parentName; | ||
| return this; | ||
| } | ||
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| // helper methods | ||
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| ClientRequest createRequest(final String prefix) { | ||
| final ClientRequest clientRequest = new ClientRequest(); | ||
| setRequestMethod(clientRequest); | ||
| setRequestPath(clientRequest, prefix); | ||
| setRequestHeaders(clientRequest); | ||
| return clientRequest; | ||
| } | ||
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| private void setRequestMethod(final ClientRequest request) { | ||
| request.setMethod(requestType.getMethod()); | ||
| } | ||
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| private void setRequestPath(final ClientRequest request, final String prefix) { | ||
| final StringBuilder sb = new StringBuilder(); | ||
| if (prefix != null) { | ||
| sb.append(prefix); | ||
| } | ||
| appendPath(sb, TXN_CONTEXT, false); | ||
| appendPath(sb, VERSION_PATH + version, false); | ||
| appendPath(sb, requestType.getPath(), false); | ||
| if (requestType == XA_COMMIT) { | ||
| sb.append(onePhase != null && onePhase ? "?opc=true" : ""); | ||
| } else if (requestType == XA_RECOVER) { | ||
| appendPath(sb, parentName, false); | ||
| } | ||
| request.setPath(sb.toString()); | ||
| } | ||
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| private void setRequestHeaders(final ClientRequest request) { | ||
| final HeaderMap headers = request.getRequestHeaders(); | ||
| if (requestType == UT_BEGIN) { | ||
| headers.put(ACCEPT, EXCEPTION + "," + NEW_TRANSACTION); | ||
| headers.put(TIMEOUT, timeout); | ||
| } else if (requestType == XA_RECOVER) { | ||
| headers.put(ACCEPT, XID_LIST + "," + NEW_TRANSACTION); | ||
| headers.put(RECOVERY_PARENT_NAME, parentName); | ||
| headers.put(RECOVERY_FLAGS, Integer.toString(flags)); | ||
| } else { | ||
| headers.add(ACCEPT, EXCEPTION.toString()); | ||
| headers.put(CONTENT_TYPE, XID.toString()); | ||
| } | ||
| } | ||
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| private static void appendPath(final StringBuilder sb, final String path, final boolean encode) { | ||
| if (!path.startsWith("/")) { | ||
| sb.append("/"); | ||
| } | ||
| sb.append(encode ? encode(path, UTF_8) : path); | ||
| } | ||
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| } |
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