/// <summary>
/// Runs a simple script which just does a server side query
/// </summary>
private static async Task RunSimpleScript(CosmosContainer container)
{
// 1. Create stored procedure for script.
string scriptFileName = @"js\SimpleScript.js";
string scriptId = Path.GetFileNameWithoutExtension(scriptFileName);
await TryDeleteStoredProcedure(container, scriptId);
CosmosScripts cosmosScripts = container.GetScripts();
StoredProcedureResponse sproc = await cosmosScripts.CreateStoredProcedureAsync(new CosmosStoredProcedureSettings(scriptId, File.ReadAllText(scriptFileName)));
// 2. Create a document.
SampleDocument doc = new SampleDocument
{
Id = Guid.NewGuid().ToString(),
LastName = "Estel",
Headquarters = "Russia",
Locations = new Location[] { new Location {
Country = "Russia", City = "Novosibirsk"
} },
Income = 50000
};
ItemResponse <SampleDocument> created = await container.CreateItemAsync(doc, new PartitionKey(doc.LastName));
// 3. Run the script. Pass "Hello, " as parameter.
// The script will take the 1st document and echo: Hello, <document as json>.
StoredProcedureExecuteResponse <string> response = await container.GetScripts().ExecuteStoredProcedureAsync <string, string>(new PartitionKey(doc.LastName), scriptId, "Hello");
Console.WriteLine("Result from script: {0}\r\n", response.Resource);
await container.DeleteItemAsync <SampleDocument>(new PartitionKey(doc.LastName), doc.Id);
}
/// <summary>
/// If a Stored Procedure is found on the DocumentCollection for the Id supplied it is deleted
/// </summary>
/// <param name="collectionLink">DocumentCollection to search for the Stored Procedure</param>
/// <param name="sprocId">Id of the Stored Procedure to delete</param>
/// <returns></returns>
private static async Task TryDeleteStoredProcedure(CosmosContainer container, string sprocId)
{
CosmosScripts cosmosScripts = container.GetScripts();
StoredProcedureResponse sproc = await cosmosScripts.ReadStoredProcedureAsync(sprocId);
if (sproc != null)
{
await cosmosScripts.DeleteStoredProcedureAsync(sprocId);
}
}
/// <summary>
/// Get documents ordered by some doc property. This is done using OrderBy stored procedure.
/// </summary>
private static async Task RunOrderBy(CosmosContainer container)
{
// 1. Create or get the stored procedure.
string body = File.ReadAllText(@"js\OrderBy.js");
string scriptId = "OrderBy";
await TryDeleteStoredProcedure(container, scriptId);
CosmosScripts cosmosScripts = container.GetScripts();
StoredProcedureResponse sproc = await cosmosScripts.CreateStoredProcedureAsync(new CosmosStoredProcedureSettings(scriptId, body));
// 2. Prepare to run stored procedure.
string orderByFieldName = "FamilyId";
string filterQuery = string.Format(CultureInfo.InvariantCulture, "SELECT r.FamilyId FROM root r WHERE r.{0} > 10", orderByFieldName);
// Note: in order to do a range query (> 10) on this field, the collection must have a range index set for this path (see ReadOrCreateCollection).
int?continuationToken = null;
int batchCount = 0;
do
{
// 3. Run the stored procedure.
StoredProcedureExecuteResponse <OrderByResult> response = await cosmosScripts.ExecuteStoredProcedureAsync <object, OrderByResult>(
new PartitionKey("Andersen"),
scriptId,
new { filterQuery, orderByFieldName, continuationToken });
// 4. Process stored procedure response.
continuationToken = response.Resource.Continuation;
Console.WriteLine("Printing documents filtered/ordered by '{0}' and ordered by '{1}', batch #{2}:", filterQuery, orderByFieldName, batchCount++);
foreach (dynamic doc in response.Resource.Result)
{
Console.WriteLine(doc.ToString());
}
} while (continuationToken != null);
// 5. To take care of big response, loop until Response.continuation token is null (see OrderBy.js for details).
}
/// <summary>
/// Import many documents using stored procedure.
/// </summary>
private static async Task RunBulkImport(CosmosContainer container)
{
string inputDirectory = @".\Data\";
string inputFileMask = "*.json";
int maxFiles = 2000;
int maxScriptSize = 50000;
// 1. Get the files.
string[] fileNames = Directory.GetFiles(inputDirectory, inputFileMask);
DirectoryInfo di = new DirectoryInfo(inputDirectory);
FileInfo[] fileInfos = di.GetFiles(inputFileMask);
// 2. Prepare for import.
int currentCount = 0;
int fileCount = maxFiles != 0 ? Math.Min(maxFiles, fileNames.Length) : fileNames.Length;
// 3. Create stored procedure for this script.
string scriptId = "BulkImport";
string body = File.ReadAllText(@".\JS\BulkImport.js");
await TryDeleteStoredProcedure(container, scriptId);
CosmosScripts cosmosScripts = container.GetScripts();
StoredProcedureResponse sproc = await cosmosScripts.CreateStoredProcedureAsync(new CosmosStoredProcedureSettings(scriptId, body));
// 4. Create a batch of docs (MAX is limited by request size (2M) and to script for execution.
// We send batches of documents to create to script.
// Each batch size is determined by MaxScriptSize.
// MaxScriptSize should be so that:
// -- it fits into one request (MAX request size is 16Kb).
// -- it doesn't cause the script to time out.
// -- it is possible to experiment with MaxScriptSize to get best performance given number of throttles, etc.
while (currentCount < fileCount)
{
// 5. Create args for current batch.
// Note that we could send a string with serialized JSON and JSON.parse it on the script side,
// but that would cause script to run longer. Since script has timeout, unload the script as much
// as we can and do the parsing by client and framework. The script will get JavaScript objects.
string argsJson = CreateBulkInsertScriptArguments(fileNames, currentCount, fileCount, maxScriptSize);
dynamic[] args = new dynamic[] { JsonConvert.DeserializeObject <dynamic>(argsJson) };
// 6. execute the batch.
StoredProcedureExecuteResponse <int> scriptResult = await cosmosScripts.ExecuteStoredProcedureAsync <dynamic, int>(new PartitionKey("Andersen"), scriptId, args);
// 7. Prepare for next batch.
int currentlyInserted = scriptResult.Resource;
currentCount += currentlyInserted;
}
// 8. Validate
int numDocs = 0;
FeedIterator <dynamic> setIterator = container.GetItemsIterator <dynamic>();
while (setIterator.HasMoreResults)
{
FeedResponse <dynamic> response = await setIterator.FetchNextSetAsync();
numDocs += response.Count();
}
Console.WriteLine("Found {0} documents in the collection. There were originally {1} files in the Data directory\r\n", numDocs, fileCount);
}