-
Notifications
You must be signed in to change notification settings - Fork 10
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #7 from prakanth97/threadpool
Add thread-pool implementation to read byte stream
- Loading branch information
Showing
4 changed files
with
165 additions
and
58 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
106 changes: 106 additions & 0 deletions
106
native/src/main/java/io/ballerina/stdlib/data/xmldata/io/DataReaderTask.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| /* | ||
| * Copyright (c) 2024, WSO2 LLC. (https://www.wso2.com). | ||
| * | ||
| * WSO2 LLC. 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 io.ballerina.stdlib.data.xmldata.io; | ||
|
|
||
| import io.ballerina.runtime.api.Environment; | ||
| import io.ballerina.runtime.api.Future; | ||
| import io.ballerina.runtime.api.types.MethodType; | ||
| import io.ballerina.runtime.api.types.ObjectType; | ||
| import io.ballerina.runtime.api.utils.TypeUtils; | ||
| import io.ballerina.runtime.api.values.BObject; | ||
| import io.ballerina.runtime.api.values.BTypedesc; | ||
| import io.ballerina.stdlib.data.xmldata.utils.DiagnosticErrorCode; | ||
| import io.ballerina.stdlib.data.xmldata.utils.DiagnosticLog; | ||
| import io.ballerina.stdlib.data.xmldata.xml.XmlParser; | ||
|
|
||
| import java.io.InputStreamReader; | ||
| import java.util.function.Consumer; | ||
|
|
||
| /** | ||
| * This class will read data from a Ballerina Stream of byte blocks, in non-blocking manner. | ||
| * | ||
| * @since 0.1.0 | ||
| */ | ||
| public class DataReaderTask implements Runnable { | ||
|
|
||
| private static final String METHOD_NAME_NEXT = "next"; | ||
| private static final String METHOD_NAME_CLOSE = "close"; | ||
|
|
||
| private final Environment env; | ||
| private final BObject iteratorObj; | ||
| private final Future future; | ||
| private final BTypedesc typed; | ||
|
|
||
| public DataReaderTask(Environment env, BObject iteratorObj, Future future, BTypedesc typed) { | ||
| this.env = env; | ||
| this.iteratorObj = iteratorObj; | ||
| this.future = future; | ||
| this.typed = typed; | ||
| } | ||
|
|
||
| static MethodType resolveNextMethod(BObject iterator) { | ||
| MethodType method = getMethodType(iterator, METHOD_NAME_NEXT); | ||
| if (method != null) { | ||
| return method; | ||
| } | ||
| throw new IllegalStateException("next method not found in the iterator object"); | ||
| } | ||
|
|
||
| static MethodType resolveCloseMethod(BObject iterator) { | ||
| return getMethodType(iterator, METHOD_NAME_CLOSE); | ||
| } | ||
|
|
||
| private static MethodType getMethodType(BObject iterator, String methodName) { | ||
| ObjectType objectType = (ObjectType) TypeUtils.getReferredType(iterator.getOriginalType()); | ||
| MethodType[] methods = objectType.getMethods(); | ||
| // Assumes compile-time validation of the iterator object | ||
| for (MethodType method : methods) { | ||
| if (method.getName().equals(methodName)) { | ||
| return method; | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| @Override | ||
| public void run() { | ||
| DataReaderTask.ResultConsumer<Object> resultConsumer = new DataReaderTask.ResultConsumer<>(future); | ||
| try (var byteBlockSteam = new BallerinaByteBlockInputStream(env, iteratorObj, resolveNextMethod(iteratorObj), | ||
| resolveCloseMethod(iteratorObj), resultConsumer)) { | ||
| Object result = XmlParser.parse(new InputStreamReader(byteBlockSteam), typed.getDescribingType()); | ||
| future.complete(result); | ||
| } catch (Exception e) { | ||
| future.complete(DiagnosticLog.error(DiagnosticErrorCode.STREAM_BROKEN, e.getMessage())); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * This class will hold module related utility functions. | ||
| * | ||
| * @param <T> The type of the result | ||
| * @param future The future to complete | ||
| * @since 0.1.0 | ||
| */ | ||
| public record ResultConsumer<T>(Future future) implements Consumer<T> { | ||
|
|
||
| @Override | ||
| public void accept(T t) { | ||
| future.complete(t); | ||
| } | ||
| } | ||
| } |
53 changes: 53 additions & 0 deletions
53
native/src/main/java/io/ballerina/stdlib/data/xmldata/io/DataReaderThreadPool.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /* | ||
| * Copyright (c) 2024, WSO2 LLC. (https://www.wso2.com). | ||
| * | ||
| * WSO2 LLC. 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 io.ballerina.stdlib.data.xmldata.io; | ||
|
|
||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.SynchronousQueue; | ||
| import java.util.concurrent.ThreadFactory; | ||
| import java.util.concurrent.ThreadPoolExecutor; | ||
| import java.util.concurrent.TimeUnit; | ||
|
|
||
| /** | ||
| * Thread pool for data reader. | ||
| * | ||
| * @since 0.1.0 | ||
| */ | ||
| public class DataReaderThreadPool { | ||
|
|
||
| // TODO : Make this configurable, in Ballerina Library. | ||
| private static final int CORE_POOL_SIZE = 0; | ||
| private static final int MAX_POOL_SIZE = 50; | ||
| private static final long KEEP_ALIVE_TIME = 60L; | ||
| private static final String THREAD_NAME = "bal-data-xmldata-thread"; | ||
| public static final ExecutorService EXECUTOR_SERVICE = new ThreadPoolExecutor(CORE_POOL_SIZE, MAX_POOL_SIZE, | ||
| KEEP_ALIVE_TIME, TimeUnit.SECONDS, new SynchronousQueue<>(), new DataThreadFactory()); | ||
|
|
||
| /** | ||
| * Thread factory for data reader. | ||
| */ | ||
| static class DataThreadFactory implements ThreadFactory { | ||
|
|
||
| @Override | ||
| public Thread newThread(Runnable runnable) { | ||
| Thread balThread = new Thread(runnable); | ||
| balThread.setName(THREAD_NAME); | ||
| return balThread; | ||
| } | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters