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Merge pull request #7 from HasithaAthukorala/service-types
Add service types generation
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75 changes: 75 additions & 0 deletions
75
src/main/java/io/ballerina/asyncapi/codegenerator/controller/ServiceTypesController.java
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| /* | ||
| * Copyright (c) 2021, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. | ||
| * | ||
| * WSO2 Inc. 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.asyncapi.codegenerator.controller; | ||
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| import io.apicurio.datamodels.Library; | ||
| import io.apicurio.datamodels.asyncapi.models.AaiChannelItem; | ||
| import io.apicurio.datamodels.asyncapi.models.AaiDocument; | ||
| import io.apicurio.datamodels.asyncapi.models.AaiMessage; | ||
| import io.apicurio.datamodels.asyncapi.v2.models.Aai20Document; | ||
| import io.ballerina.asyncapi.codegenerator.configuration.BallerinaAsyncApiException; | ||
| import io.ballerina.asyncapi.codegenerator.configuration.Constants; | ||
| import io.ballerina.asyncapi.codegenerator.usecase.ExtractServiceTypesFromSpec; | ||
| import io.ballerina.asyncapi.codegenerator.usecase.GenerateServiceTypeNode; | ||
| import io.ballerina.asyncapi.codegenerator.usecase.UseCase; | ||
| import io.ballerina.compiler.syntax.tree.ModuleMemberDeclarationNode; | ||
| import io.ballerina.compiler.syntax.tree.ModulePartNode; | ||
| import io.ballerina.compiler.syntax.tree.SyntaxTree; | ||
| import io.ballerina.tools.text.TextDocuments; | ||
| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
| import org.ballerinalang.formatter.core.Formatter; | ||
| import org.ballerinalang.formatter.core.FormatterException; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
|
|
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| public class ServiceTypesController implements Controller { | ||
| private static final Logger logger = LogManager.getLogger(ServiceTypesController.class); | ||
|
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| @Override | ||
| public void generateBalCode(String spec, String balTemplate) throws BallerinaAsyncApiException { | ||
| AaiDocument asyncApiSpec = (Aai20Document) Library.readDocumentFromJSONString(spec); | ||
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| UseCase extractServiceTypes = new ExtractServiceTypesFromSpec(asyncApiSpec); | ||
| Map<String, List<String>> serviceTypes = extractServiceTypes.execute(); | ||
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| List<ModuleMemberDeclarationNode> serviceNodes = new ArrayList<>(); | ||
| for (Map.Entry<String, List<String>> service : serviceTypes.entrySet()) { | ||
| UseCase generateServiceTypeNode = new GenerateServiceTypeNode(service.getKey(), service.getValue()); | ||
| serviceNodes.add(generateServiceTypeNode.execute()); | ||
| } | ||
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| var textDocument = TextDocuments.from(balTemplate); | ||
| var syntaxTree = SyntaxTree.from(textDocument); | ||
| ModulePartNode oldRoot = syntaxTree.rootNode(); | ||
| ModulePartNode newRoot = oldRoot.modify().withMembers(oldRoot.members().addAll(serviceNodes)).apply(); | ||
| var modifiedTree = syntaxTree.replaceNode(oldRoot, newRoot); | ||
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| try { | ||
| var formattedSourceCode = Formatter.format(modifiedTree).toSourceCode(); | ||
| logger.debug("Generated the source code for the service types: {}", formattedSourceCode); | ||
| } catch (FormatterException e) { | ||
| logger.error("Could not format the generated code, may be syntax issue in the generated code. " + | ||
| "Generated code: {}", modifiedTree.toSourceCode()); | ||
| } | ||
| } | ||
| } |
76 changes: 76 additions & 0 deletions
76
src/main/java/io/ballerina/asyncapi/codegenerator/usecase/ExtractServiceTypesFromSpec.java
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|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| /* | ||
| * Copyright (c) 2021, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. | ||
| * | ||
| * WSO2 Inc. 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. | ||
| */ | ||
|
|
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| package io.ballerina.asyncapi.codegenerator.usecase; | ||
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| import io.apicurio.datamodels.asyncapi.models.AaiChannelItem; | ||
| import io.apicurio.datamodels.asyncapi.models.AaiDocument; | ||
| import io.apicurio.datamodels.asyncapi.models.AaiMessage; | ||
| import io.ballerina.asyncapi.codegenerator.configuration.BallerinaAsyncApiException; | ||
| import io.ballerina.asyncapi.codegenerator.configuration.Constants; | ||
| import io.ballerina.asyncapi.codegenerator.usecase.utils.CodegenUtils; | ||
|
|
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| import java.util.ArrayList; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
|
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| public class ExtractServiceTypesFromSpec implements UseCase { | ||
| private final AaiDocument asyncApiSpec; | ||
| private final CodegenUtils codegenUtils = new CodegenUtils(); | ||
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| public ExtractServiceTypesFromSpec(AaiDocument asyncApiSpec) { | ||
| this.asyncApiSpec = asyncApiSpec; | ||
| } | ||
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| @Override | ||
| public Map<String, List<String>> execute() throws BallerinaAsyncApiException { | ||
| Map<String, List<String>> serviceTypes = new HashMap<>(); | ||
| for (Map.Entry<String, AaiChannelItem> channel : asyncApiSpec.channels.entrySet()) { | ||
| List<String> remoteFunctions = new ArrayList<>(); | ||
| String serviceType; | ||
| if (channel.getValue().getExtension(Constants.X_BALLERINA_SERVICE_TYPE) == null) { | ||
| serviceType = codegenUtils.getValidName(channel.getKey(), true); | ||
| } else { | ||
| serviceType = channel.getValue().getExtension(Constants.X_BALLERINA_SERVICE_TYPE).value.toString(); | ||
| } | ||
| AaiMessage mainMessage = channel.getValue().subscribe.message; | ||
| if (mainMessage.oneOf != null) { | ||
| for(AaiMessage message: mainMessage.oneOf) { | ||
| if (message.getExtension(Constants.X_BALLERINA_EVENT_TYPE) == null) { | ||
| throw new BallerinaAsyncApiException( | ||
| "Could not find the ".concat(Constants.X_BALLERINA_EVENT_TYPE) | ||
| .concat(" attribute in the message of the channel ").concat(channel.getKey())); | ||
| } | ||
| remoteFunctions.add( | ||
| message.getExtension(Constants.X_BALLERINA_EVENT_TYPE).value.toString()); | ||
| } | ||
| } else { | ||
| if (mainMessage.getExtension(Constants.X_BALLERINA_EVENT_TYPE) == null) { | ||
| throw new BallerinaAsyncApiException( | ||
| "Could not find the ".concat(Constants.X_BALLERINA_EVENT_TYPE) | ||
| .concat(" attribute in the message of the channel ").concat(channel.getKey())); | ||
| } | ||
| remoteFunctions.add(channel.getValue() | ||
| .subscribe.message.getExtension(Constants.X_BALLERINA_EVENT_TYPE).value.toString()); | ||
| } | ||
| serviceTypes.put(serviceType, remoteFunctions); | ||
| } | ||
| return serviceTypes; | ||
| } | ||
| } |
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65 changes: 65 additions & 0 deletions
65
src/main/java/io/ballerina/asyncapi/codegenerator/usecase/GenerateServiceTypeNode.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /* | ||
| * Copyright (c) 2021, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. | ||
| * | ||
| * WSO2 Inc. 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.asyncapi.codegenerator.usecase; | ||
|
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| import io.ballerina.asyncapi.codegenerator.configuration.BallerinaAsyncApiException; | ||
| import io.ballerina.asyncapi.codegenerator.usecase.utils.CodegenUtils; | ||
| import io.ballerina.compiler.syntax.tree.*; | ||
|
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
|
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| import static io.ballerina.compiler.syntax.tree.AbstractNodeFactory.*; | ||
| import static io.ballerina.compiler.syntax.tree.AbstractNodeFactory.createToken; | ||
| import static io.ballerina.compiler.syntax.tree.NodeFactory.*; | ||
| import static io.ballerina.compiler.syntax.tree.SyntaxKind.*; | ||
|
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| public class GenerateServiceTypeNode implements UseCase { | ||
| private final String serviceTypeName; | ||
| private final List<String> remoteFunctionNames; | ||
| private final CodegenUtils codegenUtils = new CodegenUtils(); | ||
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| public GenerateServiceTypeNode(String serviceTypeName, List<String> remoteFunctionNames) { | ||
| this.serviceTypeName = serviceTypeName; | ||
| this.remoteFunctionNames = remoteFunctionNames; | ||
| } | ||
|
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| @Override | ||
| public TypeDefinitionNode execute() throws BallerinaAsyncApiException { | ||
| List<Node> remoteFunctions = new ArrayList<>(); | ||
| remoteFunctionNames.forEach(remoteFunction -> { | ||
| var methodDeclarationNode = createMethodDeclarationNode( | ||
| SyntaxKind.METHOD_DECLARATION, null, createNodeList(createToken(REMOTE_KEYWORD)), | ||
| createToken(SyntaxKind.FUNCTION_KEYWORD), createIdentifierToken(remoteFunction), createEmptyNodeList(), | ||
| createFunctionSignatureNode( | ||
| createToken(OPEN_PAREN_TOKEN), createSeparatedNodeList(), | ||
| createToken(CLOSE_PAREN_TOKEN), null), | ||
| createToken(SyntaxKind.SEMICOLON_TOKEN)); | ||
| remoteFunctions.add(methodDeclarationNode); | ||
| }); | ||
| var serviceTypeToken = AbstractNodeFactory | ||
| .createIdentifierToken(serviceTypeName); | ||
| var recordTypeDescriptorNode = | ||
| NodeFactory.createRecordTypeDescriptorNode(createIdentifierToken("service object"), | ||
| createToken(OPEN_BRACE_TOKEN), createNodeList(remoteFunctions), null, | ||
| createToken(SyntaxKind.CLOSE_BRACE_TOKEN)); | ||
| return createTypeDefinitionNode(null, createToken(PUBLIC_KEYWORD), | ||
| createToken(TYPE_KEYWORD), serviceTypeToken, recordTypeDescriptorNode, createToken(SEMICOLON_TOKEN)); | ||
| } | ||
| } |
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