在 node.js 中创建 Azure DocumentDB 分区集合

Question

我正在尝试使用节点创建 Azure Document DB (cosmos DB) 分区集合。

function _getOrCreateCollectionAsync(databaseUrl, collection){
var collectionUrl = `${databaseUrl}/colls/${collection.name}`,
    def = Q.defer();

    console.log("getting collection: " + collectionUrl);

    client.readCollection(collectionUrl, (err, result) => {
        if (err) {
            if (err.code == 404) {
                console.log("collection " + collection.name + " not found... creating...");

                var colOptions = {};
                colOptions.offerThroughput = collection.azureOptions.offerThroughput || 10000; //default is 10k
                colOptions.partitionKey = ["/data"];
                // colOptions.partitionKey = ["data"];
                // colOptions.partitionKey = "/data";
                // colOptions.partitionKey = "data";

                var reqOptions = {
                    id : collection.name
                    //, partitionKey : ["/data"]
                }

                client.createCollection(databaseUrl, reqOptions, colOptions, (err, created) => {
                    if (err) {
                        console.log(err);
                        def.reject(err)
                    } else {
                        def.resolve(created);
                    }
                });
            } else {
                console.log(err);
                def.reject(err);
            }
        } else {
            def.resolve(result);
        }
    });

    return def.promise;
 }

（请忽略代码草率，我还在努力让它工作）

当我运行它时，我得到了这个错误

.......... working with collection: testCollection
getting collection: dbs/testDb/colls/testCollection
collection testCollection not found... creating...
{ code: 400,
  body: '{"code":"BadRequest","message":"Message: {\\"Errors\\":[\\"x-ms-documentdb-partitionkey header cannot be specified for this request\\"]}\\r\\nActivityId: (snip), Request URI: /apps/(snip)/services/(snip)/partitions/(snip)/replicas/(snip)"}',
  activityId: '(snip)' }

从上面可以看出，我有不同的选项来定义分区键，它们都返回相同的结果。

我还尝试使用此示例Create Collection in Azure DocumentDB with Different Partition Mode 作为指南（在 c# 中）将其添加到 reqOptions，这表明他的分区键需要成为 reqOptions 对象的一部分。当我这样做时，我得到了这个错误。

.......... working with collection: testCollection
getting collection: dbs/testDb/colls/testCollection
collection testCollection not found... creating...
{ code: 400,
  body: '{"code":"BadRequest","message":"The specified document collection is invalid.\\r\\nActivityId: (snip)"}',
  activityId: '(snip)' }

在这一点上我很茫然，任何帮助将不胜感激。

谢谢

Answer 1

正如Cosmos DB REST API documentation 所说，分区键必须指定为对象并放入请求正文中。

所以，请更改您的代码如下：

var colOptions = {};
colOptions.offerThroughput = collection.azureOptions.offerThroughput || 10000; //default is 10k

var reqOptions = {
    id: collection.name,
    partitionKey : { paths: ["/data"], kind: "Hash" }
}

client.createCollection(databaseUrl, reqOptions, colOptions, (err, created) => {
    if (err) {
        console.log(err);
        def.reject(err)
    } else {
        def.resolve(created);
    }
});