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August 24, 2023 10:38
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package com.example.proto.grpc.exception.message; | |
import com.google.protobuf.Message; | |
import io.grpc.Status; | |
import java.util.LinkedHashMap; | |
import java.util.Objects; | |
/** | |
* 特定のgRPCレスポンスのための例外クラスです。 | |
* | |
* @see org.springframework.web.server.ResponseStatusException | |
*/ | |
public class ResponseStatusException extends RuntimeException { | |
final Status status; | |
LinkedHashMap<String, Object[]> messageKeys; | |
LinkedHashMap<String, Object[]> detailKeys; | |
public ResponseStatusException(Status status, String message) { | |
super(message); | |
this.status = status; | |
this.messageKeys = null; | |
this.detailKeys = null; | |
} | |
public ResponseStatusException(Status status, String message, Throwable cause) { | |
super(message, cause); | |
this.status = status; | |
this.messageKeys = null; | |
this.detailKeys = null; | |
} | |
public ResponseStatusException(Status status, LinkedHashMap<String, Object[]> messageKeys, LinkedHashMap<String, Object[]> detailKeys) { | |
super(); | |
this.status = status; | |
this.messageKeys = messageKeys; | |
this.detailKeys = detailKeys; | |
} | |
public Status getStatus() { | |
return status; | |
} | |
public LinkedHashMap<String, Object[]> getMessageKeys() { | |
return messageKeys; | |
} | |
public LinkedHashMap<String, Object[]> getDetailKeys() { | |
return detailKeys; | |
} | |
} |
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package com.example.proto.grpc.exception.message; | |
import io.grpc.Status; | |
/** | |
* 特定のgRPCレスポンスのための例外クラスです。 | |
* | |
* @see org.springframework.web.server.ResponseStatusException | |
*/ | |
public class ResponseStatusException extends RuntimeException { | |
final Status status; | |
public ResponseStatusException(Status status, String message) { | |
super(message); | |
this.status = status; | |
} | |
public ResponseStatusException(Status status, String message, Throwable cause) { | |
super(message, cause); | |
this.status = status; | |
} | |
public Status getStatus() { | |
return status; | |
} | |
} |
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package com.example.proto.grpc.exception.message; | |
import com.google.protobuf.Message; | |
import com.google.rpc.LocalizedMessage; | |
/** | |
* エラーメッセージの詳細を扱います | |
*/ | |
public interface DetailMessage { | |
/** | |
* メッセージを返却します | |
* | |
* @return protobuf message class | |
*/ | |
Message getMessage(); | |
/** | |
* protobufのメッセージを直接扱います | |
*/ | |
class RawMessage implements DetailMessage { | |
Message message; | |
RawMessage(Message message) { | |
this.message = message; | |
} | |
@Override | |
public Message getMessage() { | |
return message; | |
} | |
} | |
/** | |
* テンプレート化されたメッセージを扱います | |
*/ | |
interface TemplateMessage extends DetailMessage { | |
Message getMessage(MessageResolver messageResolver); | |
@Override | |
default Message getMessage() { | |
throw new UnsupportedOperationException("Unsupported the retrieval of raw message."); | |
} | |
/** | |
* テンプレート化されたLocalizedMessageを扱います | |
*/ | |
class LocalizedMessageTemplateMessage implements TemplateMessage { | |
String templateMessage; | |
Object[] parameters; | |
LocalizedMessageTemplateMessage(String templateMessage, Object... parameters) { | |
this.templateMessage = templateMessage; | |
this.parameters = parameters; | |
} | |
@Override | |
public Message getMessage(MessageResolver messageResolver) { | |
return LocalizedMessage.newBuilder() | |
.setLocale(messageResolver.getLocale().toString()) | |
.setMessage(messageResolver.getMessage(templateMessage, parameters)) | |
.build(); | |
} | |
} | |
} | |
} |
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package com.example.proto.grpc.exception.message; | |
import com.google.protobuf.Message; | |
import java.util.HashSet; | |
import java.util.Set; | |
/** | |
* DetailMessageのためのユーティリティクラス | |
*/ | |
public class DetailMessages { | |
/** | |
* protobufで定義されたMessageクラス用のBuilderクラスを生成します | |
* | |
* @return protobuf Messageクラス用のBuilderクラス | |
*/ | |
public static RawMessageDetailMessageBuilder rawMessageBuilder() { | |
return new RawMessageDetailMessageBuilder(); | |
} | |
/** | |
* LocalizedMessageのTemplateMessageクラス用のBuilderクラスを生成します | |
* | |
* @return LocalizedMessageのTemplateMessageクラス用のBuilderクラス | |
*/ | |
public static LocalizedMessageDetailMessageBuilder localizedMessageBuilder() { | |
return new LocalizedMessageDetailMessageBuilder(); | |
} | |
/** | |
* テンプレートメッセージを利用したDetailMessageを生成します。 | |
* このメソッドは、{@link DetailMessages#localizedMessageBuilder()}のショートカットメソッドです。 | |
* | |
* @param templateMessage テンプレートメッセージ | |
* @param parameters テンプレートにセットする変数 | |
* @return 単一のLocalizedMessage | |
*/ | |
public static Set<DetailMessage> localizedMessage(String templateMessage, Object... parameters) { | |
return localizedMessageBuilder() | |
.add(templateMessage, parameters) | |
.build(); | |
} | |
public static class LocalizedMessageDetailMessageBuilder { | |
Set<DetailMessage> messages; | |
/** | |
* DetailMessagesを利用して生成するため、パッケージプライベートとします。 | |
*/ | |
LocalizedMessageDetailMessageBuilder() { | |
this.messages = new HashSet<>(); | |
} | |
public LocalizedMessageDetailMessageBuilder add(String templateMessage, Object... parameters) { | |
messages.add(new DetailMessage.TemplateMessage.LocalizedMessageTemplateMessage(templateMessage, parameters)); | |
return this; | |
} | |
public Set<DetailMessage> build() { | |
return messages; | |
} | |
} | |
public static class RawMessageDetailMessageBuilder { | |
Set<DetailMessage> messages; | |
/** | |
* DetailMessagesを利用して生成するため、パッケージプライベートとします。 | |
*/ | |
RawMessageDetailMessageBuilder() { | |
this.messages = new HashSet<>(); | |
} | |
public RawMessageDetailMessageBuilder add(Message message) { | |
messages.add(new DetailMessage.TemplateMessage.RawMessage(message)); | |
return this; | |
} | |
public Set<DetailMessage> build() { | |
return messages; | |
} | |
} | |
} |
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package com.example.proto.grpc.exception.message; | |
import com.example.proto.grpc.exception.message.DetailMessage; | |
import com.example.proto.grpc.exception.message.MessageResolver; | |
import com.google.protobuf.Message; | |
import io.grpc.Status; | |
import java.util.Collections; | |
import java.util.Set; | |
import static java.util.stream.Collectors.toSet; | |
/** | |
* 特定のgRPCレスポンスのための例外クラスです。 | |
* | |
* @see org.springframework.web.server.ResponseStatusException | |
*/ | |
public class ResponseStatusException extends RuntimeException { | |
final Status status; | |
final Set<DetailMessage> detailMessages; | |
public ResponseStatusException(Status status, String message) { | |
super(message); | |
this.status = status; | |
this.detailMessages = Collections.emptySet(); | |
} | |
public ResponseStatusException(Status status, String message, Throwable cause) { | |
super(message, cause); | |
this.status = status; | |
this.detailMessages = Collections.emptySet(); | |
} | |
public ResponseStatusException(Status status, String message, Set<DetailMessage> detailMessages) { | |
super(message); | |
this.status = status; | |
this.detailMessages = detailMessages; | |
} | |
public Status getStatus() { | |
return status; | |
} | |
public Set<? extends Message> getDetails(MessageResolver messageResolver) { | |
return detailMessages.stream() | |
.map(detail -> { | |
if (detail instanceof DetailMessage.TemplateMessage) { | |
DetailMessage.TemplateMessage templateMessage = (DetailMessage.TemplateMessage) detail; | |
return templateMessage.getMessage(messageResolver); | |
} else { | |
return detail.getMessage(); | |
} | |
}).collect(toSet()); | |
} | |
} |
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package com.example.proto.grpc.exception.message; | |
import org.springframework.lang.Nullable; | |
import java.util.Locale; | |
/** | |
* テンプレート化されたメッセージの変換を扱います | |
*/ | |
public interface MessageResolver { | |
String getMessage(String code, @Nullable Object[] args); | |
Locale getLocale(); | |
} |
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