Cosmosdb

README.md

resourceGroupName='myrg' location='westeurope' name='mycosmos' databaseName='mycosmos-db' collectionName='collection1'

Create a resource group

az group create
--name $resourceGroupName
--location $location

Create a DocumentDB API Cosmos DB account

az cosmosdb create
--name $name
--kind GlobalDocumentDB
--resource-group $resourceGroupName
--max-interval 10
--max-staleness-prefix 200

Create a database

az cosmosdb database create
--name $name
--db-name $databaseName
--resource-group $resourceGroupName

Create a collection

az cosmosdb collection create
--collection-name $collectionName
--name $name
--db-name $databaseName
--resource-group $resourceGroupName

SELECT value count(1) FROM c where c.pkey = 50

bulkDeleteSproc

/**
 * A DocumentDB stored procedure that bulk deletes documents for a given query.<br/>
 * Note: You may need to execute this sproc multiple times (depending whether the sproc is able to delete every document within the execution timeout limit).
 *
 * @function
 * @param {string} query - A query that provides the documents to be deleted (e.g. "SELECT * FROM c WHERE c.founded_year = 2008")
 * @returns {Object.<number, boolean>} Returns an object with the two properties:<br/>
 *   deleted - contains a count of documents deleted<br/>
 *   continuation - a boolean whether you should execute the sproc again (true if there are more documents to delete; false otherwise).
 */
function bulkDeleteSproc(query) {
    var collection = getContext().getCollection();
    var collectionLink = collection.getSelfLink();
    var response = getContext().getResponse();
    var responseBody = {
        deleted: 0,
        continuation: true
    };

    // Validate input.
    if (!query) throw new Error("The query is undefined or null.");

    tryQueryAndDelete();

    // Recursively runs the query w/ support for continuation tokens.
    // Calls tryDelete(documents) as soon as the query returns documents.
    function tryQueryAndDelete(continuation) {
        var requestOptions = {continuation: continuation};

        var isAccepted = collection.queryDocuments(collectionLink, query, requestOptions, function (err, retrievedDocs, responseOptions) {
            if (err) throw err;

            if (retrievedDocs.length > 0) {
                // Begin deleting documents as soon as documents are returned form the query results.
                // tryDelete() resumes querying after deleting; no need to page through continuation tokens.
                //  - this is to prioritize writes over reads given timeout constraints.
                tryDelete(retrievedDocs);
            } else if (responseOptions.continuation) {
                // Else if the query came back empty, but with a continuation token; repeat the query w/ the token.
                tryQueryAndDelete(responseOptions.continuation);
            } else {
                // Else if there are no more documents and no continuation token - we are finished deleting documents.
                responseBody.continuation = false;
                response.setBody(responseBody);
            }
        });

        // If we hit execution bounds - return continuation: true.
        if (!isAccepted) {
            response.setBody(responseBody);
        }
    }

    // Recursively deletes documents passed in as an array argument.
    // Attempts to query for more on empty array.
    function tryDelete(documents) {
        if (documents.length > 0) {
            // Delete the first document in the array.
            var isAccepted = collection.deleteDocument(documents[0]._self, {}, function (err, responseOptions) {
                if (err) throw err;

                responseBody.deleted++;
                documents.shift();
                // Delete the next document in the array.
                tryDelete(documents);
            });

            // If we hit execution bounds - return continuation: true.
            if (!isAccepted) {
                response.setBody(responseBody);
            }
        } else {
            // If the document array is empty, query for more documents.
            tryQueryAndDelete();
        }
    }
}

updatedocument.js

function updateSproc() {
var collection = getContext().getCollection();
var collectionLink = collection.getSelfLink();
var response = getContext().getResponse();
var responseBody = {
    updated: 0,
    continuation: true,
    error: "",
    log: ""
};

// Validate input.
tryQueryAndUpdate();

// Recursively queries for a document by id w/ support for continuation tokens.
// Calls tryUpdate(document) as soon as the query returns a document.
function tryQueryAndUpdate(continuation) {
    var query = { query: "SELECT * FROM root c", parameters: []};
    var requestOptions = { continuation: continuation};

    var isAccepted = collection.queryDocuments(collectionLink, query, requestOptions, function(err, documents, responseOptions) {
        if (err) {
    responseBody.error = err;
    throw err;
        }

        if (documents.length > 0) {
            // If documents are found, update them.
            responseBody.log += "Found documents: " + documents.length;
            tryUpdate(documents);
        } else if (responseOptions.continuation) {
            responseBody.log += "Continue query";
            tryQueryAndUpdate(responseOptions.continuation);
        } else {
            responseBody.log += "No more documents";
            responseBody.continuation = false;
            response.setBody(responseBody);
        }

    });

    // If we hit execution bounds - throw an exception.
    if (!isAccepted) {
        responseBody.log += "Query not accepted";
        response.setBody(responseBody);
    }
}

// Updates the supplied document according to the update object passed in to the sproc.
function tryUpdate(documents)
{
    if (documents.length > 0) {
        responseBody.log += "Updating documents " + documents.length;

        var document = documents[0];

        // DocumentDB supports optimistic concurrency control via HTTP ETag.
        var requestOptions = { etag: document._etag};

        document.LastModified = 1;

        // Update the document.
        var isAccepted = collection.replaceDocument(document._self, document, requestOptions, function(err, updatedDocument, responseOptions) {
           if (err) {
              responseBody.error = err;
              throw err;
           }

           responseBody.updated++;
           documents.shift();
           tryUpdate(documents);
        });

        // If we hit execution bounds - throw an exception.
        if (!isAccepted) {
            responseBody.log += "Update not accepted";
            response.setBody(responseBody);
        }
    } else {
        tryQueryAndUpdate();
    }
}}