/
Exceptions.java
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/
Exceptions.java
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/*
* Copyright 2021 Google LLC
*
* 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
*
* https://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 com.google.cloud.bigquery.storage.v1;
import com.google.api.gax.grpc.GrpcStatusCode;
import com.google.common.collect.ImmutableMap;
import com.google.protobuf.Any;
import com.google.protobuf.InvalidProtocolBufferException;
import io.grpc.Status;
import io.grpc.Status.Code;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.annotation.Nullable;
/** Exceptions for Storage Client Libraries. */
public final class Exceptions {
/** Main Storage Exception. Might contain map of streams to errors for that stream. */
public static class StorageException extends RuntimeException {
private final ImmutableMap<String, GrpcStatusCode> errors;
private final String streamName;
private StorageException() {
this(null, null, null, ImmutableMap.of());
}
private StorageException(
@Nullable String message,
@Nullable Throwable cause,
@Nullable String streamName,
ImmutableMap<String, GrpcStatusCode> errors) {
super(message, cause);
this.streamName = streamName;
this.errors = errors;
}
public ImmutableMap<String, GrpcStatusCode> getErrors() {
return errors;
}
public String getStreamName() {
return streamName;
}
}
/** Stream has already been finalized. */
public static final class StreamFinalizedException extends StorageException {
protected StreamFinalizedException(String name, String message, Throwable cause) {
super(message, cause, name, ImmutableMap.of());
}
}
/**
* There was a schema mismatch due to bigquery table with fewer fields than the input message.
* This can be resolved by updating the table's schema with the message schema.
*/
public static final class SchemaMismatchedException extends StorageException {
protected SchemaMismatchedException(String name, String message, Throwable cause) {
super(message, cause, name, ImmutableMap.of());
}
}
private static StorageError toStorageError(com.google.rpc.Status rpcStatus) {
for (Any detail : rpcStatus.getDetailsList()) {
if (detail.is(StorageError.class)) {
try {
return detail.unpack(StorageError.class);
} catch (InvalidProtocolBufferException protoException) {
throw new IllegalStateException(protoException);
}
}
}
return null;
}
/**
* Converts a c.g.rpc.Status into a StorageException, if possible. Examines the embedded
* StorageError, and potentially returns a {@link StreamFinalizedException} or {@link
* SchemaMismatchedException} (both derive from StorageException). If there is no StorageError, or
* the StorageError is a different error it will return NULL.
*/
@Nullable
public static StorageException toStorageException(
com.google.rpc.Status rpcStatus, Throwable exception) {
StorageError error = toStorageError(rpcStatus);
if (error == null) {
return null;
}
switch (error.getCode()) {
case STREAM_FINALIZED:
return new StreamFinalizedException(error.getEntity(), error.getErrorMessage(), exception);
case SCHEMA_MISMATCH_EXTRA_FIELDS:
return new SchemaMismatchedException(error.getEntity(), error.getErrorMessage(), exception);
default:
return null;
}
}
/**
* Converts a Throwable into a StorageException, if possible. Examines the embedded error message,
* and potentially returns a {@link StreamFinalizedException} or {@link SchemaMismatchedException}
* (both derive from StorageException). If there is no StorageError, or the StorageError is a
* different error it will return NULL.
*/
@Nullable
public static StorageException toStorageException(Throwable exception) {
// TODO: switch to using rpcStatus when cl/408735437 is rolled out
// com.google.rpc.Status rpcStatus = StatusProto.fromThrowable(exception);
Status grpcStatus = Status.fromThrowable(exception);
String message = exception.getMessage();
String streamPatternString = "projects/[^/]+/datasets/[^/]+/tables/[^/]+/streams/[^/]+";
Pattern streamPattern = Pattern.compile(streamPatternString);
if (message == null) {
return null;
}
// TODO: SWTICH TO CHECK SCHEMA_MISMATCH_EXTRA_FIELDS IN THE ERROR CODE
if (grpcStatus.getCode().equals(Code.INVALID_ARGUMENT)
&& message.toLowerCase().contains("input schema has more fields than bigquery schema")) {
Matcher streamMatcher = streamPattern.matcher(message);
String entity = streamMatcher.find() ? streamMatcher.group() : "streamName unkown";
return new SchemaMismatchedException(entity, message, exception);
}
// TODO: SWTICH TO CHECK STREAM_FINALIZED IN THE ERROR CODE
if (grpcStatus.getCode().equals(Code.INVALID_ARGUMENT)
&& message.toLowerCase().contains("stream has been finalized and cannot be appended")) {
Matcher streamMatcher = streamPattern.matcher(message);
String entity = streamMatcher.find() ? streamMatcher.group() : "streamName unkown";
return new StreamFinalizedException(entity, message, exception);
}
return null;
}
private Exceptions() {}
}