Chilkat Online Tools

ListDatastores C Example

AWS IoT Analytics

#include <C_CkRest.h>
#include <C_CkAuthAws.h>
#include <C_CkStringBuilder.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    HCkRest rest;
    BOOL success;
    HCkAuthAws authAws;
    HCkStringBuilder sbResponseBody;
    int respStatusCode;
    HCkJsonObject jResp;
    int creationTime;
    const char *datastoreName;
    const char *Bucket;
    const char *KeyPrefix;
    const char *RoleArn;
    const char *CustomerManagedS3StorageBucket;
    const char *CustomerManagedS3StorageKeyPrefix;
    const char *fileFormatType;
    int lastMessageArrivalTime;
    int lastUpdateTime;
    const char *status;
    int j;
    int count_j;
    const char *AttributeName;
    const char *timestampPartitionAttributeName;
    const char *TimestampFormat;
    const char *nextToken;
    int i;
    int count_i;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    rest = CkRest_Create();

    authAws = CkAuthAws_Create();
    CkAuthAws_putAccessKey(authAws,"AWS_ACCESS_KEY");
    CkAuthAws_putSecretKey(authAws,"AWS_SECRET_KEY");

    // Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
    CkAuthAws_putRegion(authAws,"us-west-2");
    CkAuthAws_putServiceName(authAws,"iotanalytics");
    // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    CkRest_SetAuthAws(rest,authAws);

    // URL: https://iotanalytics.us-west-2.amazonaws.com/
    // Use the same region as specified above.
    success = CkRest_Connect(rest,"iotanalytics.us-west-2.amazonaws.com",443,TRUE,TRUE);
    if (success != TRUE) {
        printf("ConnectFailReason: %d\n",CkRest_getConnectFailReason(rest));
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        return;
    }

    CkRest_AddHeader(rest,"Content-Type","application/x-amz-json-1.1");
    CkRest_AddHeader(rest,"X-Amz-Target","ListDatastores");

    sbResponseBody = CkStringBuilder_Create();
    success = CkRest_FullRequestNoBodySb(rest,"GET","/datastores",sbResponseBody);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

    respStatusCode = CkRest_getResponseStatusCode(rest);
    printf("response status code = %d\n",respStatusCode);
    if (respStatusCode != 200) {
        printf("Response Header:\n");
        printf("%s\n",CkRest_responseHeader(rest));
        printf("Response Body:\n");
        printf("%s\n",CkStringBuilder_getAsString(sbResponseBody));
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

    jResp = CkJsonObject_Create();
    CkJsonObject_LoadSb(jResp,sbResponseBody);

    // The following code parses the JSON response.
    // A sample JSON response is shown below the sample code.

    // Use this online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    // See this example explaining how this memory should be used: const char * functions.

    nextToken = CkJsonObject_stringOf(jResp,"nextToken");
    i = 0;
    count_i = CkJsonObject_SizeOfArray(jResp,"datastoreSummaries");
    while (i < count_i) {
        CkJsonObject_putI(jResp,i);
        creationTime = CkJsonObject_IntOf(jResp,"datastoreSummaries[i].creationTime");
        datastoreName = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].datastoreName");
        Bucket = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].datastoreStorage.customerManagedS3.bucket");
        KeyPrefix = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].datastoreStorage.customerManagedS3.keyPrefix");
        RoleArn = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].datastoreStorage.customerManagedS3.roleArn");
        CustomerManagedS3StorageBucket = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].datastoreStorage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.bucket");
        CustomerManagedS3StorageKeyPrefix = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].datastoreStorage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.keyPrefix");
        fileFormatType = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].fileFormatType");
        lastMessageArrivalTime = CkJsonObject_IntOf(jResp,"datastoreSummaries[i].lastMessageArrivalTime");
        lastUpdateTime = CkJsonObject_IntOf(jResp,"datastoreSummaries[i].lastUpdateTime");
        status = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].status");
        j = 0;
        count_j = CkJsonObject_SizeOfArray(jResp,"datastoreSummaries[i].datastorePartitions.partitions");
        while (j < count_j) {
            CkJsonObject_putJ(jResp,j);
            AttributeName = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].datastorePartitions.partitions[j].attributePartition.attributeName");
            timestampPartitionAttributeName = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].datastorePartitions.partitions[j].timestampPartition.attributeName");
            TimestampFormat = CkJsonObject_stringOf(jResp,"datastoreSummaries[i].datastorePartitions.partitions[j].timestampPartition.timestampFormat");
            j = j + 1;
        }

        i = i + 1;
    }

    // A sample JSON response body parsed by the above code:

    // {
    //   "datastoreSummaries": [
    //     {
    //       "creationTime": number,
    //       "datastoreName": "string",
    //       "datastorePartitions": {
    //         "partitions": [
    //           {
    //             "attributePartition": {
    //               "attributeName": "string"
    //             },
    //             "timestampPartition": {
    //               "attributeName": "string",
    //               "timestampFormat": "string"
    //             }
    //           }
    //         ]
    //       },
    //       "datastoreStorage": {
    //         "customerManagedS3": {
    //           "bucket": "string",
    //           "keyPrefix": "string",
    //           "roleArn": "string"
    //         },
    //         "iotSiteWiseMultiLayerStorage": {
    //           "customerManagedS3Storage": {
    //             "bucket": "string",
    //             "keyPrefix": "string"
    //           }
    //         },
    //         "serviceManagedS3": {}
    //       },
    //       "fileFormatType": "string",
    //       "lastMessageArrivalTime": number,
    //       "lastUpdateTime": number,
    //       "status": "string"
    //     }
    //   ],
    //   "nextToken": "string"
    // }


    CkRest_Dispose(rest);
    CkAuthAws_Dispose(authAws);
    CkStringBuilder_Dispose(sbResponseBody);
    CkJsonObject_Dispose(jResp);

    }