private static async Task CreateLeaseCollectionIfNotExistsAsync(ICosmosDBService leaseCosmosDBService, string databaseName, string collectionName, int throughput)
{
try
{
await CosmosDBUtility.CreateDatabaseAndCollectionIfNotExistAsync(leaseCosmosDBService, databaseName, collectionName, null, throughput);
}
catch (DocumentClientException ex) when(ex.Message.Contains(SharedThroughputRequirementException))
{
await CosmosDBUtility.CreateDatabaseAndCollectionIfNotExistAsync(leaseCosmosDBService, databaseName, collectionName, LeaseCollectionRequiredPartitionKey, throughput);
}
}
public async Task AddAsync(T item, CancellationToken cancellationToken = default(CancellationToken))
{
bool create = false;
try
{
await UpsertDocument(_docDBContext, item);
}
catch (Exception ex)
{
if (CosmosDBUtility.TryGetDocumentClientException(ex, out DocumentClientException de) &&
de.StatusCode == HttpStatusCode.NotFound)
{
if (_docDBContext.ResolvedAttribute.CreateIfNotExists)
{
create = true;
}
else
{
// Throw a custom error so that it's easier to decipher.
string message = $"The collection '{_docDBContext.ResolvedAttribute.CollectionName}' (in database '{_docDBContext.ResolvedAttribute.DatabaseName}') does not exist. To automatically create the collection, set '{nameof(CosmosDBAttribute.CreateIfNotExists)}' to 'true'.";
throw new InvalidOperationException(message, ex);
}
}
else
{
throw;
}
}
if (create)
{
await CosmosDBUtility.CreateDatabaseAndCollectionIfNotExistAsync(_docDBContext);
await UpsertDocument(_docDBContext, item);
}
}
public async Task <ITriggerBinding> TryCreateAsync(TriggerBindingProviderContext context)
{
// Tries to parse the context parameters and see if it belongs to this [CosmosDBTrigger] binder
if (context == null)
{
throw new ArgumentNullException("context");
}
ParameterInfo parameter = context.Parameter;
CosmosDBTriggerAttribute attribute = parameter.GetCustomAttribute <CosmosDBTriggerAttribute>(inherit: false);
if (attribute == null)
{
return(null);
}
_monitorConnectionString = _nameResolver.Resolve(CosmosDBConfiguration.AzureWebJobsCosmosDBConnectionStringName);
_leasesConnectionString = _nameResolver.Resolve(CosmosDBConfiguration.AzureWebJobsCosmosDBConnectionStringName);
DocumentCollectionInfo documentCollectionLocation;
DocumentCollectionInfo leaseCollectionLocation;
ChangeFeedHostOptions leaseHostOptions = ResolveLeaseOptions(attribute);
int?maxItemCount = null;
if (attribute.MaxItemsPerInvocation > 0)
{
maxItemCount = attribute.MaxItemsPerInvocation;
}
try
{
string triggerConnectionString = ResolveAttributeConnectionString(attribute);
CosmosDBConnectionString triggerConnection = new CosmosDBConnectionString(triggerConnectionString);
if (triggerConnection.ServiceEndpoint == null)
{
throw new InvalidOperationException("The connection string for the monitored collection is in an invalid format, please use AccountEndpoint=XXXXXX;AccountKey=XXXXXX;.");
}
string leasesConnectionString = ResolveAttributeLeasesConnectionString(attribute, triggerConnectionString);
CosmosDBConnectionString leasesConnection = new CosmosDBConnectionString(leasesConnectionString);
if (leasesConnection.ServiceEndpoint == null)
{
throw new InvalidOperationException("The connection string for the leases collection is in an invalid format, please use AccountEndpoint=XXXXXX;AccountKey=XXXXXX;.");
}
documentCollectionLocation = new DocumentCollectionInfo
{
Uri = triggerConnection.ServiceEndpoint,
MasterKey = triggerConnection.AuthKey,
DatabaseName = ResolveAttributeValue(attribute.DatabaseName),
CollectionName = ResolveAttributeValue(attribute.CollectionName)
};
documentCollectionLocation.ConnectionPolicy.UserAgentSuffix = CosmosDBTriggerUserAgentSuffix;
leaseCollectionLocation = new DocumentCollectionInfo
{
Uri = leasesConnection.ServiceEndpoint,
MasterKey = leasesConnection.AuthKey,
DatabaseName = ResolveAttributeValue(attribute.LeaseDatabaseName),
CollectionName = ResolveAttributeValue(attribute.LeaseCollectionName)
};
leaseCollectionLocation.ConnectionPolicy.UserAgentSuffix = CosmosDBTriggerUserAgentSuffix;
if (string.IsNullOrEmpty(documentCollectionLocation.DatabaseName) ||
string.IsNullOrEmpty(documentCollectionLocation.CollectionName) ||
string.IsNullOrEmpty(leaseCollectionLocation.DatabaseName) ||
string.IsNullOrEmpty(leaseCollectionLocation.CollectionName))
{
throw new InvalidOperationException("Cannot establish database and collection values. If you are using environment and configuration values, please ensure these are correctly set.");
}
if (documentCollectionLocation.Uri.Equals(leaseCollectionLocation.Uri) &&
documentCollectionLocation.DatabaseName.Equals(leaseCollectionLocation.DatabaseName) &&
documentCollectionLocation.CollectionName.Equals(leaseCollectionLocation.CollectionName))
{
throw new InvalidOperationException("The monitored collection cannot be the same as the collection storing the leases.");
}
if (attribute.CreateLeaseCollectionIfNotExists)
{
// Not disposing this because it might be reused on other Trigger since Triggers could share lease collection
ICosmosDBService service = _config.GetService(leasesConnectionString);
await CosmosDBUtility.CreateDatabaseAndCollectionIfNotExistAsync(service, leaseCollectionLocation.DatabaseName, leaseCollectionLocation.CollectionName, null, attribute.LeasesCollectionThroughput);
}
}
catch (Exception ex)
{
throw new InvalidOperationException(string.Format("Cannot create Collection Information for {0} in database {1} with lease {2} in database {3} : {4}", attribute.CollectionName, attribute.DatabaseName, attribute.LeaseCollectionName, attribute.LeaseDatabaseName, ex.Message), ex);
}
return(new CosmosDBTriggerBinding(parameter, documentCollectionLocation, leaseCollectionLocation, leaseHostOptions, maxItemCount));
}