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[Fix serverlessworkflow#468] Try/raise implementation
Signed-off-by: Francisco Javier Tirado Sarti <ftirados@redhat.com>
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21 changes: 21 additions & 0 deletions
21
impl/core/src/main/java/io/serverlessworkflow/impl/StringFilter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| /* | ||
| * Copyright 2020-Present The Serverless Workflow Specification Authors | ||
| * | ||
| * 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 io.serverlessworkflow.impl; | ||
|
|
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| import java.util.function.BiFunction; | ||
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| @FunctionalInterface | ||
| public interface StringFilter extends BiFunction<WorkflowContext, TaskContext<?>, String> {} |
73 changes: 73 additions & 0 deletions
73
impl/core/src/main/java/io/serverlessworkflow/impl/WorkflowError.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| /* | ||
| * Copyright 2020-Present The Serverless Workflow Specification Authors | ||
| * | ||
| * 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 io.serverlessworkflow.impl; | ||
|
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| public record WorkflowError( | ||
| String type, int status, String instance, String title, String details) { | ||
|
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| private static final String ERROR_FORMAT = "https://serverlessworkflow.io/spec/1.0.0/errors/%s"; | ||
| public static final String RUNTIME_TYPE = String.format(ERROR_FORMAT, "runtime"); | ||
| public static final String COMM_TYPE = String.format(ERROR_FORMAT, "communication"); | ||
|
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| public static Builder error(String type, int status) { | ||
| return new Builder(type, status); | ||
| } | ||
|
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| public static Builder communication(int status, TaskContext<?> context, Exception ex) { | ||
| return new Builder(COMM_TYPE, status) | ||
| .instance(context.position().jsonPointer()) | ||
| .title(ex.getMessage()); | ||
| } | ||
|
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| public static Builder runtime(int status, TaskContext<?> context, Exception ex) { | ||
| return new Builder(RUNTIME_TYPE, status) | ||
| .instance(context.position().jsonPointer()) | ||
| .title(ex.getMessage()); | ||
| } | ||
|
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| public static class Builder { | ||
|
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| private final String type; | ||
| private int status; | ||
| private String instance; | ||
| private String title; | ||
| private String details; | ||
|
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| private Builder(String type, int status) { | ||
| this.type = type; | ||
| this.status = status; | ||
| } | ||
|
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| public Builder instance(String instance) { | ||
| this.instance = instance; | ||
| return this; | ||
| } | ||
|
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| public Builder title(String title) { | ||
| this.title = title; | ||
| return this; | ||
| } | ||
|
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| public Builder details(String details) { | ||
| this.details = details; | ||
| return this; | ||
| } | ||
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| public WorkflowError build() { | ||
| return new WorkflowError(type, status, instance, title, details); | ||
| } | ||
| } | ||
| } |
36 changes: 36 additions & 0 deletions
36
impl/core/src/main/java/io/serverlessworkflow/impl/WorkflowException.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| /* | ||
| * Copyright 2020-Present The Serverless Workflow Specification Authors | ||
| * | ||
| * 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 io.serverlessworkflow.impl; | ||
|
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| public class WorkflowException extends RuntimeException { | ||
|
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| private static final long serialVersionUID = 1L; | ||
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| private final WorkflowError worflowError; | ||
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| public WorkflowException(WorkflowError error) { | ||
| this(error, null); | ||
| } | ||
|
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| public WorkflowException(WorkflowError error, Throwable cause) { | ||
| super(error.toString(), cause); | ||
| this.worflowError = error; | ||
| } | ||
|
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| public WorkflowError getWorflowError() { | ||
| return worflowError; | ||
| } | ||
| } |
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104 changes: 104 additions & 0 deletions
104
impl/core/src/main/java/io/serverlessworkflow/impl/executors/RaiseExecutor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /* | ||
| * Copyright 2020-Present The Serverless Workflow Specification Authors | ||
| * | ||
| * 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 io.serverlessworkflow.impl.executors; | ||
|
|
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| import io.serverlessworkflow.api.types.Error; | ||
| import io.serverlessworkflow.api.types.ErrorInstance; | ||
| import io.serverlessworkflow.api.types.ErrorType; | ||
| import io.serverlessworkflow.api.types.RaiseTask; | ||
| import io.serverlessworkflow.api.types.RaiseTaskError; | ||
| import io.serverlessworkflow.impl.StringFilter; | ||
| import io.serverlessworkflow.impl.TaskContext; | ||
| import io.serverlessworkflow.impl.WorkflowContext; | ||
| import io.serverlessworkflow.impl.WorkflowDefinition; | ||
| import io.serverlessworkflow.impl.WorkflowError; | ||
| import io.serverlessworkflow.impl.WorkflowException; | ||
| import io.serverlessworkflow.impl.WorkflowUtils; | ||
| import io.serverlessworkflow.impl.expressions.ExpressionFactory; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
| import java.util.function.BiFunction; | ||
|
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| public class RaiseExecutor extends AbstractTaskExecutor<RaiseTask> { | ||
|
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| private final BiFunction<WorkflowContext, TaskContext<RaiseTask>, WorkflowError> errorBuilder; | ||
|
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| private final StringFilter typeFilter; | ||
| private final Optional<StringFilter> instanceFilter; | ||
| private final StringFilter titleFilter; | ||
| private final StringFilter detailFilter; | ||
|
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| protected RaiseExecutor(RaiseTask task, WorkflowDefinition definition) { | ||
| super(task, definition); | ||
| RaiseTaskError raiseError = task.getRaise().getError(); | ||
| Error error = | ||
| raiseError.getRaiseErrorDefinition() != null | ||
| ? raiseError.getRaiseErrorDefinition() | ||
| : findError(definition, raiseError.getRaiseErrorReference()); | ||
| this.typeFilter = getTypeFunction(definition.expressionFactory(), error.getType()); | ||
| this.instanceFilter = getInstanceFunction(definition.expressionFactory(), error.getInstance()); | ||
| this.titleFilter = | ||
| WorkflowUtils.buildStringFilter(definition.expressionFactory(), error.getTitle()); | ||
| this.detailFilter = | ||
| WorkflowUtils.buildStringFilter(definition.expressionFactory(), error.getDetail()); | ||
| this.errorBuilder = (w, t) -> buildError(error, w, t); | ||
| } | ||
|
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| private static Error findError(WorkflowDefinition definition, String raiseErrorReference) { | ||
| Map<String, Error> errorsMap = | ||
| definition.workflow().getUse().getErrors().getAdditionalProperties(); | ||
| Error error = errorsMap.get(raiseErrorReference); | ||
| if (error == null) { | ||
| throw new IllegalArgumentException("Error " + error + "is not defined in " + errorsMap); | ||
| } | ||
| return error; | ||
| } | ||
|
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| private WorkflowError buildError( | ||
| Error error, WorkflowContext context, TaskContext<RaiseTask> taskContext) { | ||
| return WorkflowError.error(typeFilter.apply(context, taskContext), error.getStatus()) | ||
| .instance( | ||
| instanceFilter | ||
| .map(f -> f.apply(context, taskContext)) | ||
| .orElseGet(() -> taskContext.position().jsonPointer())) | ||
| .title(titleFilter.apply(context, taskContext)) | ||
| .details(detailFilter.apply(context, taskContext)) | ||
| .build(); | ||
| } | ||
|
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| private Optional<StringFilter> getInstanceFunction( | ||
| ExpressionFactory expressionFactory, ErrorInstance errorInstance) { | ||
| return errorInstance != null | ||
| ? Optional.of( | ||
| WorkflowUtils.buildStringFilter( | ||
| expressionFactory, | ||
| errorInstance.getExpressionErrorInstance(), | ||
| errorInstance.getLiteralErrorInstance())) | ||
| : Optional.empty(); | ||
| } | ||
|
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| private StringFilter getTypeFunction(ExpressionFactory expressionFactory, ErrorType type) { | ||
| return WorkflowUtils.buildStringFilter( | ||
| expressionFactory, | ||
| type.getExpressionErrorType(), | ||
| type.getLiteralErrorType().get().toString()); | ||
| } | ||
|
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| @Override | ||
| protected void internalExecute(WorkflowContext workflow, TaskContext<RaiseTask> taskContext) { | ||
| throw new WorkflowException(errorBuilder.apply(workflow, taskContext)); | ||
| } | ||
| } |
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