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/*
* Copyright (c) 2014 Brocade Communications Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.yangtools.yang.common;
import static java.util.Objects.requireNonNull;
import com.google.common.collect.ImmutableList;
import com.google.common.util.concurrent.FluentFuture;
import com.google.common.util.concurrent.Futures;
import java.io.Serial;
import java.io.Serializable;
import java.util.Collection;
import org.eclipse.jdt.annotation.NonNull;
import org.opendaylight.yangtools.concepts.Mutable;
/**
* A builder for creating RpcResult instances.
*
* @author Thomas Pantelis
*
* @param the result value type
*/
public final class RpcResultBuilder implements Mutable {
private static class RpcResultImpl implements RpcResult, Serializable {
@Serial
private static final long serialVersionUID = 1L;
private final ImmutableList errors;
private final T result;
private final boolean successful;
RpcResultImpl(final boolean successful, final T result, final ImmutableList errors) {
this.successful = successful;
this.result = result;
this.errors = requireNonNull(errors);
}
@Override
public ImmutableList getErrors() {
return errors;
}
@Override
public T getResult() {
return result;
}
@Override
public boolean isSuccessful() {
return successful;
}
@Override
public String toString() {
return "RpcResult [successful=" + successful + ", result="
+ result + ", errors=" + errors + "]";
}
}
private static class RpcErrorImpl implements RpcError, Serializable {
@Serial
private static final long serialVersionUID = 1L;
private final String applicationTag;
private final ErrorTag tag;
private final String info;
private final ErrorSeverity severity;
private final String message;
private final ErrorType errorType;
private final Throwable cause;
RpcErrorImpl(final ErrorSeverity severity, final ErrorType errorType, final ErrorTag tag, final String message,
final String applicationTag, final String info, final Throwable cause) {
this.severity = severity;
this.errorType = errorType;
this.tag = tag;
this.message = message;
this.applicationTag = applicationTag;
this.info = info;
this.cause = cause;
}
@Override
public String getApplicationTag() {
return applicationTag;
}
@Override
public ErrorTag getTag() {
return tag;
}
@Override
public String getInfo() {
return info;
}
@Override
public ErrorSeverity getSeverity() {
return severity;
}
@Override
public String getMessage() {
return message;
}
@Override
public ErrorType getErrorType() {
return errorType;
}
@Override
public Throwable getCause() {
return cause;
}
@Override
public String toString() {
return "RpcError [message=" + message + ", severity="
+ severity + ", errorType=" + errorType + ", tag=" + tag
+ ", applicationTag=" + applicationTag + ", info=" + info
+ ", cause=" + cause + "]";
}
}
private ImmutableList.Builder errors;
private T result;
private final boolean successful;
private RpcResultBuilder(final boolean successful, final T result) {
this.successful = successful;
this.result = result;
}
/**
* Returns a builder for a successful result.
*/
public static @NonNull RpcResultBuilder success() {
return new RpcResultBuilder<>(true, null);
}
/**
* Returns a builder for a successful result.
*
* @param result the result value
*/
public static @NonNull RpcResultBuilder success(final T result) {
return new RpcResultBuilder<>(true, result);
}
/**
* Returns a builder for a failed result.
*/
public static @NonNull RpcResultBuilder failed() {
return new RpcResultBuilder<>(false, null);
}
/**
* Returns a builder based on the given status.
*
* @param success true if successful, false otherwise.
*/
public static @NonNull RpcResultBuilder status(final boolean success) {
return new RpcResultBuilder<>(success, null);
}
/**
* Returns a builder from another RpcResult.
*
* @param other the other RpcResult.
*/
public static @NonNull RpcResultBuilder from(final RpcResult other) {
return new RpcResultBuilder<>(other.isSuccessful(), other.getResult())
.withRpcErrors(other.getErrors());
}
/**
* Creates an RpcError with severity ERROR for reuse.
*
* @param errorType the conceptual layer at which the error occurred.
* @param tag a short string that identifies the general type of error condition. See
* {@link RpcError#getTag} for a list of suggested values.
* @param message a string suitable for human display that describes the error condition.
*
* @return an RpcError
*/
public static @NonNull RpcError newError(final ErrorType errorType, final ErrorTag tag, final String message) {
return new RpcErrorImpl(ErrorSeverity.ERROR, errorType, tag != null ? tag : ErrorTag.OPERATION_FAILED, message,
null, null, null);
}
/**
* Creates an RpcError with severity ERROR for reuse.
*
* @param errorType the conceptual layer at which the error occurred.
* @param tag a short string that identifies the general type of error condition. See
* {@link RpcError#getTag} for a list of suggested values.
* @param message a string suitable for human display that describes the error condition.
* @param applicationTag a short string that identifies the specific type of error condition.
* @param info a string containing additional information to provide extended
* and/or implementation-specific debugging information.
* @param cause the exception that triggered the error.
*
* @return an RpcError
*/
public static @NonNull RpcError newError(final ErrorType errorType, final ErrorTag tag, final String message,
final String applicationTag, final String info, final Throwable cause) {
return new RpcErrorImpl(ErrorSeverity.ERROR, errorType, tag != null ? tag : ErrorTag.OPERATION_FAILED, message,
applicationTag, info, cause);
}
/**
* Creates an RpcError with severity WARNING for reuse.
*
* @param errorType the conceptual layer at which the warning occurred.
* @param tag a short string that identifies the general type of warning condition. See
* {@link RpcError#getTag} for a list of suggested values.
* @param message a string suitable for human display that describes the warning condition.
*
* @return an RpcError
*/
public static @NonNull RpcError newWarning(final ErrorType errorType, final ErrorTag tag, final String message) {
return new RpcErrorImpl(ErrorSeverity.WARNING, errorType, tag, message, null, null, null);
}
/**
* Creates an RpcError with severity WARNING for reuse.
*
* @param errorType the conceptual layer at which the warning occurred.
* @param tag a short string that identifies the general type of warning condition. See
* {@link RpcError#getTag} for a list of suggested values.
* @param message a string suitable for human display that describes the warning condition.
* @param applicationTag a short string that identifies the specific type of warning condition.
* @param info a string containing additional information to provide extended
* and/or implementation-specific debugging information.
* @param cause the exception that triggered the warning.
*
* @return an RpcError
*/
public static @NonNull RpcError newWarning(final ErrorType errorType, final ErrorTag tag, final String message,
final String applicationTag, final String info, final Throwable cause) {
return new RpcErrorImpl(ErrorSeverity.WARNING, errorType, tag, message, applicationTag, info, cause);
}
/**
* Sets the value of the result.
*
* @param result the result value
*/
@SuppressWarnings("checkstyle:hiddenField")
public @NonNull RpcResultBuilder withResult(final T result) {
this.result = result;
return this;
}
private void addError(final ErrorSeverity severity, final ErrorType errorType, final ErrorTag tag,
final String message, final String applicationTag, final String info, final Throwable cause) {
addError(new RpcErrorImpl(severity, errorType, tag != null ? tag : ErrorTag.OPERATION_FAILED, message,
applicationTag, info, cause));
}
private void addError(final RpcError error) {
if (errors == null) {
errors = new ImmutableList.Builder<>();
}
errors.add(error);
}
/**
* Adds a warning to the result.
*
* @param errorType the conceptual layer at which the warning occurred.
* @param tag a short string that identifies the general type of warning condition. See
* {@link RpcError#getTag} for a list of suggested values.
* @param message a string suitable for human display that describes the warning condition.
*/
public @NonNull RpcResultBuilder withWarning(final ErrorType errorType, final ErrorTag tag,
final String message) {
addError(ErrorSeverity.WARNING, errorType, tag, message, null, null, null);
return this;
}
/**
* Adds a warning to the result.
*
* @param errorType the conceptual layer at which the warning occurred.
* @param tag a short string that identifies the general type of warning condition. See
* {@link RpcError#getTag} for a list of suggested values.
* @param message a string suitable for human display that describes the warning condition.
* @param applicationTag a short string that identifies the specific type of warning condition.
* @param info a string containing additional information to provide extended
* and/or implementation-specific debugging information.
* @param cause the exception that triggered the warning.
*/
public @NonNull RpcResultBuilder withWarning(final ErrorType errorType, final ErrorTag tag, final String message,
final String applicationTag, final String info, final Throwable cause) {
addError(ErrorSeverity.WARNING, errorType, tag, message, applicationTag, info, cause);
return this;
}
/**
* Adds an error to the result. The general error tag defaults to "operation-failed".
*
* @param errorType the conceptual layer at which the error occurred.
* @param message a string suitable for human display that describes the error condition.
*/
public @NonNull RpcResultBuilder withError(final ErrorType errorType, final String message) {
addError(ErrorSeverity.ERROR, errorType, null, message, null, null, null);
return this;
}
/**
* Adds an error to the result.
*
* @param errorType the conceptual layer at which the error occurred.
* @param tag a short string that identifies the general type of error condition. See
* {@link RpcError#getTag} for a list of suggested values.
* @param message a string suitable for human display that describes the error condition.
*/
public @NonNull RpcResultBuilder withError(final ErrorType errorType, final ErrorTag tag, final String message) {
addError(ErrorSeverity.ERROR, errorType, tag, message, null, null, null);
return this;
}
/**
* Adds an error to the result. The general error tag defaults to "operation-failed".
*
* @param errorType the conceptual layer at which the error occurred.
* @param message a string suitable for human display that describes the error condition.
* @param cause the exception that triggered the error.
*/
public @NonNull RpcResultBuilder withError(final ErrorType errorType, final String message,
final Throwable cause) {
addError(ErrorSeverity.ERROR, errorType, null, message, null, null, cause);
return this;
}
/**
* Adds an error to the result.
*
* @param errorType the conceptual layer at which the error occurred.
* @param tag a short string that identifies the general type of error condition. See
* {@link RpcError#getTag} for a list of suggested values.
* @param message a string suitable for human display that describes the error condition.
* @param applicationTag a short string that identifies the specific type of error condition.
* @param info a string containing additional information to provide extended
* and/or implementation-specific debugging information.
* @param cause the exception that triggered the error.
*/
public @NonNull RpcResultBuilder withError(final ErrorType errorType, final ErrorTag tag, final String message,
final String applicationTag, final String info, final Throwable cause) {
addError(ErrorSeverity.ERROR, errorType, tag, message, applicationTag, info, cause);
return this;
}
/**
* Adds an RpcError.
*
* @param error the RpcError
*/
public @NonNull RpcResultBuilder withRpcError(final RpcError error) {
addError(error);
return this;
}
/**
* Adds RpcErrors.
*
* @param rpcErrors the list of RpcErrors
*/
public RpcResultBuilder withRpcErrors(final Collection rpcErrors) {
if (rpcErrors != null) {
for (RpcError error : rpcErrors) {
addError(error);
}
}
return this;
}
/**
* Build the resulting {@link RpcResult}.
*
* @return An RpcResult instance
*/
public @NonNull RpcResult build() {
return new RpcResultImpl<>(successful, result, errors != null ? errors.build() : ImmutableList.of());
}
/**
* Builds RpcResult and wraps it in a Future.
*
* This is a convenience method to assist those writing RPCs that produce immediate results. It allows you to
* replace {@code FluentFuture.from(Futures.immediateFuture(rpcResult.build()))} with
* {@code rpcResult.buildFuture()}
*
* @return Future for RpcResult built by RpcResultBuilder
*/
public @NonNull FluentFuture> buildFuture() {
return FluentFuture.from(Futures.immediateFuture(build()));
}
}