/// <summary>
/// Fetches the information about a bucket asynchronously.
/// </summary>
/// <param name="bucket">The name of the bucket. Must not be null.</param>
/// <param name="options">Additional options for the fetch operation. May be null, in which case appropriate
/// defaults will be used.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns>A task representing the asynchronous operation, with a result returning the
/// <see cref="Bucket"/> representation of the storage bucket.</returns>
public virtual Task <Bucket> GetBucketAsync(
string bucket,
GetBucketOptions options = null,
CancellationToken cancellationToken = default(CancellationToken))
{
throw new NotImplementedException();
}
private BucketsResource.GetRequest CreateGetBucketRequest(string bucket, GetBucketOptions options)
{
ValidateBucketName(bucket);
var bucketEntity = new Bucket {
Name = bucket
};
var request = Service.Buckets.Get(bucket);
options?.ModifyRequest(request);
return(request);
}
/// <inheritdoc />
public override IDictionary <string, string> ModifyBucketLabels(string bucket, IDictionary <string, string> labels, ModifyBucketLabelsOptions options = null)
{
ValidateBucketName(bucket);
GaxPreconditions.CheckNotNull(labels, nameof(labels));
int retries = options?.Retries ?? ModifyBucketLabelsOptions.DefaultRetries;
var getOptions = new GetBucketOptions {
IfMetagenerationMatch = options?.IfMetagenerationMatch
};
while (true)
{
// Outside the catch, as we don't need to retry if *this* fails the precondition.
// If the bucket originally has the "right" version but then changes before we patch it, we'll end up retrying this
// part as well, and it will immediately fail.
var bucketMetadata = GetBucket(bucket, getOptions);
try
{
var existingLabels = bucketMetadata.Labels ?? new Dictionary <string, string>();
var differences = GetDifferences(labels, existingLabels);
// If everything's already as we want it to be, we don't need to patch.
if (differences.Count != 0)
{
var patchOptions = new PatchBucketOptions {
IfMetagenerationMatch = bucketMetadata.Metageneration
};
PatchBucket(new Bucket {
Name = bucketMetadata.Name, Labels = differences
}, patchOptions);
}
var oldValues = new Dictionary <string, string>();
foreach (var entry in labels)
{
existingLabels.TryGetValue(entry.Key, out string existingValue);
oldValues[entry.Key] = existingValue; // May be null
}
return(oldValues);
}
catch (GoogleApiException e) when(retries > 0 && e.HttpStatusCode == HttpStatusCode.PreconditionFailed)
{
retries--;
// No delay here: we're only trying to catch the case where another change is made between Get/Patch.
}
}
}
/// <inheritdoc />
public override IDictionary <string, string> ClearBucketLabels(string bucket, ModifyBucketLabelsOptions options = null)
{
ValidateBucketName(bucket);
int retries = options?.Retries ?? ModifyBucketLabelsOptions.DefaultRetries;
var getOptions = new GetBucketOptions {
IfMetagenerationMatch = options?.IfMetagenerationMatch
};
while (true)
{
// Outside the catch, as we don't need to retry if *this* fails the precondition.
// If the bucket originally has the "right" version but then changes before we patch it, we'll end up retrying this
// part as well, and it will immediately fail.
var bucketMetadata = GetBucket(bucket, getOptions);
try
{
var existingLabels = bucketMetadata.Labels;
if (existingLabels == null || existingLabels.Count == 0)
{
return(new Dictionary <string, string>());
}
var patchOptions = new PatchBucketOptions {
IfMetagenerationMatch = bucketMetadata.Metageneration
};
var labels = existingLabels.Keys.ToDictionary(key => key, key => (string)null);
PatchBucket(new Bucket {
Name = bucketMetadata.Name, Labels = labels
}, patchOptions);
return(existingLabels);
}
catch (GoogleApiException e) when(retries > 0 && e.HttpStatusCode == HttpStatusCode.PreconditionFailed)
{
retries--;
// No delay here: we're only trying to catch the case where another change is made between Get/Patch.
}
}
}
/// <inheritdoc />
public override Task <Bucket> GetBucketAsync(string bucket, GetBucketOptions options = null,
CancellationToken cancellationToken = default) =>
CreateGetBucketRequest(bucket, options).ExecuteAsync();
/// <inheritdoc /> public override Bucket GetBucket(string bucket, GetBucketOptions options = null) => CreateGetBucketRequest(bucket, options).Execute();
/// <summary>
/// Fetches the information about a bucket synchronously.
/// </summary>
/// <param name="bucket">The name of the bucket. Must not be null.</param>
/// <param name="options">Additional options for the fetch operation. May be null, in which case appropriate
/// defaults will be used.</param>
/// <returns>The <see cref="Bucket"/> representation of the storage bucket.</returns>
public virtual Bucket GetBucket(string bucket, GetBucketOptions options = null)
{
throw new NotImplementedException();
}
