Chilkat Examples

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(C) DynamoDB - CreateTable

The CreateTable operation adds a new table to your account. In an AWS account, table names must be unique within each Region. That is, you can have two tables with same name if you create the tables in different Regions.

CreateTable is an asynchronous operation. Upon receiving a CreateTable request, DynamoDB immediately returns a response with a TableStatus of CREATING. After the table is created, DynamoDB sets the TableStatus to ACTIVE. You can perform read and write operations only on an ACTIVE table.

You can use the DescribeTable action to check the table status.

For more information, see https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_CreateTable.html

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

void ChilkatSample(void)
    {
    HCkRest rest;
    BOOL success;
    HCkAuthAws authAws;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    HCkJsonObject json;
    int i;
    int j;
    HCkStringBuilder sbRequestBody;
    HCkStringBuilder sbResponseBody;
    int respStatusCode;
    HCkJsonObject jsonResponse;
    const char *AttributeName;
    const char *AttributeType;
    const char *KeyType;
    const char *IndexArn;
    const char *IndexName;
    int IndexSizeBytes;
    int ItemCount;
    const char *ProjectionProjectionType;
    int count_j;
    const char *TableDescriptionTableArn;
    const char *TableDescriptionCreationDateTime;
    int TableDescriptionItemCount;
    int TableDescriptionProvisionedThroughputNumberOfDecreasesToday;
    int TableDescriptionProvisionedThroughputReadCapacityUnits;
    int TableDescriptionProvisionedThroughputWriteCapacityUnits;
    const char *TableDescriptionTableName;
    int TableDescriptionTableSizeBytes;
    const char *TableDescriptionTableStatus;
    int count_i;

    rest = CkRest_Create();

    // Implements the following CURL command:

    // curl -X POST https://dynamodb.us-west-2.amazonaws.com/ \
    //   -H "Accept-Encoding: identity" \
    //   -H "Content-Type: application/x-amz-json-1.0" \
    //   -H "Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=<Headers>, Signature=<Signature>" \
    //   -H "X-Amz-Date: <Date>" \
    //   -H "X-Amz-Target: DynamoDB_20120810.CreateTable" \
    //   -d '{
    //     "AttributeDefinitions": [
    //         {
    //             "AttributeName": "ForumName",
    //             "AttributeType": "S"
    //         },
    //         {
    //             "AttributeName": "Subject",
    //             "AttributeType": "S"
    //         },
    //         {
    //             "AttributeName": "LastPostDateTime",
    //             "AttributeType": "S"
    //         }
    //     ],
    //     "TableName": "Thread",
    //     "KeySchema": [
    //         {
    //             "AttributeName": "ForumName",
    //             "KeyType": "HASH"
    //         },
    //         {
    //             "AttributeName": "Subject",
    //             "KeyType": "RANGE"
    //         }
    //     ],
    //     "LocalSecondaryIndexes": [
    //         {
    //             "IndexName": "LastPostIndex",
    //             "KeySchema": [
    //                 {
    //                     "AttributeName": "ForumName",
    //                     "KeyType": "HASH"
    //                 },
    //                 {
    //                     "AttributeName": "LastPostDateTime",
    //                     "KeyType": "RANGE"
    //                 }
    //             ],
    //             "Projection": {
    //                 "ProjectionType": "KEYS_ONLY"
    //             }
    //         }
    //     ],
    //     "ProvisionedThroughput": {
    //         "ReadCapacityUnits": 5,
    //         "WriteCapacityUnits": 5
    //     },
    //     "Tags": [ 
    //       { 
    //          "Key": "Owner",
    //          "Value": "BlueTeam"
    //       }
    //    ]
    // }'

    // Use the following online tool to generate REST code from a CURL command
    // Convert a cURL Command to REST Source Code

    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,"dynamodb");
    // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    CkRest_SetAuthAws(rest,authAws);

    // URL: https://dynamodb.us-west-2.amazonaws.com/
    bTls = TRUE;
    port = 443;
    bAutoReconnect = TRUE;
    // Don't forget to change the region domain (us-west-2.amazonaws.com) to your particular region.
    success = CkRest_Connect(rest,"dynamodb.us-west-2.amazonaws.com",port,bTls,bAutoReconnect);
    if (success != TRUE) {
        printf("ConnectFailReason: %d\n",CkRest_getConnectFailReason(rest));
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        return;
    }

    // Note: The above code does not need to be repeatedly called for each REST request.
    // The rest object can be setup once, and then many requests can be sent.  Chilkat will automatically
    // reconnect within a FullRequest* method as needed.  It is only the very first connection that is explicitly
    // made via the Connect method.

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

    // The following JSON is sent in the request body.

    // {
    //   "AttributeDefinitions": [
    //     {
    //       "AttributeName": "ForumName",
    //       "AttributeType": "S"
    //     },
    //     {
    //       "AttributeName": "Subject",
    //       "AttributeType": "S"
    //     },
    //     {
    //       "AttributeName": "LastPostDateTime",
    //       "AttributeType": "S"
    //     }
    //   ],
    //   "TableName": "Thread",
    //   "KeySchema": [
    //     {
    //       "AttributeName": "ForumName",
    //       "KeyType": "HASH"
    //     },
    //     {
    //       "AttributeName": "Subject",
    //       "KeyType": "RANGE"
    //     }
    //   ],
    //   "LocalSecondaryIndexes": [
    //     {
    //       "IndexName": "LastPostIndex",
    //       "KeySchema": [
    //         {
    //           "AttributeName": "ForumName",
    //           "KeyType": "HASH"
    //         },
    //         {
    //           "AttributeName": "LastPostDateTime",
    //           "KeyType": "RANGE"
    //         }
    //       ],
    //       "Projection": {
    //         "ProjectionType": "KEYS_ONLY"
    //       }
    //     }
    //   ],
    //   "ProvisionedThroughput": {
    //     "ReadCapacityUnits": 5,
    //     "WriteCapacityUnits": 5
    //   },
    //   "Tags": [
    //     {
    //       "Key": "Owner",
    //       "Value": "BlueTeam"
    //     }
    //   ]
    // }

    json = CkJsonObject_Create();
    i = 0;
    CkJsonObject_putI(json,i);
    CkJsonObject_UpdateString(json,"AttributeDefinitions[i].AttributeName","ForumName");
    CkJsonObject_UpdateString(json,"AttributeDefinitions[i].AttributeType","S");
    i = i + 1;
    CkJsonObject_putI(json,i);
    CkJsonObject_UpdateString(json,"AttributeDefinitions[i].AttributeName","Subject");
    CkJsonObject_UpdateString(json,"AttributeDefinitions[i].AttributeType","S");
    i = i + 1;
    CkJsonObject_putI(json,i);
    CkJsonObject_UpdateString(json,"AttributeDefinitions[i].AttributeName","LastPostDateTime");
    CkJsonObject_UpdateString(json,"AttributeDefinitions[i].AttributeType","S");
    CkJsonObject_UpdateString(json,"TableName","Thread");
    i = 0;
    CkJsonObject_putI(json,i);
    CkJsonObject_UpdateString(json,"KeySchema[i].AttributeName","ForumName");
    CkJsonObject_UpdateString(json,"KeySchema[i].KeyType","HASH");
    i = i + 1;
    CkJsonObject_putI(json,i);
    CkJsonObject_UpdateString(json,"KeySchema[i].AttributeName","Subject");
    CkJsonObject_UpdateString(json,"KeySchema[i].KeyType","RANGE");

    i = 0;
    CkJsonObject_putI(json,i);
    j = 0;
    CkJsonObject_putJ(json,j);
    CkJsonObject_UpdateString(json,"LocalSecondaryIndexes[i].IndexName","LastPostIndex");
    CkJsonObject_UpdateString(json,"LocalSecondaryIndexes[i].KeySchema[j].AttributeName","ForumName");
    CkJsonObject_UpdateString(json,"LocalSecondaryIndexes[i].KeySchema[j].KeyType","HASH");
    j = j + 1;
    CkJsonObject_putJ(json,j);
    CkJsonObject_UpdateString(json,"LocalSecondaryIndexes[i].KeySchema[j].AttributeName","LastPostDateTime");
    CkJsonObject_UpdateString(json,"LocalSecondaryIndexes[i].KeySchema[j].KeyType","RANGE");
    CkJsonObject_UpdateString(json,"LocalSecondaryIndexes[i].Projection.ProjectionType","KEYS_ONLY");
    CkJsonObject_UpdateInt(json,"ProvisionedThroughput.ReadCapacityUnits",5);
    CkJsonObject_UpdateInt(json,"ProvisionedThroughput.WriteCapacityUnits",5);
    CkJsonObject_UpdateString(json,"Tags[0].Key","Owner");
    CkJsonObject_UpdateString(json,"Tags[0].Value","BlueTeam");

    CkRest_AddHeader(rest,"Content-Type","application/x-amz-json-1.0");
    CkRest_AddHeader(rest,"X-Amz-Target","DynamoDB_20120810.CreateTable");
    CkRest_AddHeader(rest,"Accept-Encoding","identity");

    sbRequestBody = CkStringBuilder_Create();
    CkJsonObject_EmitSb(json,sbRequestBody);
    sbResponseBody = CkStringBuilder_Create();
    success = CkRest_FullRequestSb(rest,"POST","/",sbRequestBody,sbResponseBody);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        CkJsonObject_Dispose(json);
        CkStringBuilder_Dispose(sbRequestBody);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

    respStatusCode = CkRest_getResponseStatusCode(rest);
    printf("response status code = %d\n",respStatusCode);

    if (respStatusCode >= 400) {
        printf("Response Status Code = %d\n",respStatusCode);
        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);
        CkJsonObject_Dispose(json);
        CkStringBuilder_Dispose(sbRequestBody);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

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

    CkJsonObject_putEmitCompact(jsonResponse,FALSE);
    printf("%s\n",CkJsonObject_emit(jsonResponse));

    // Sample Response:

    //  {
    //     "TableDescription": {
    //         "TableArn": "arn:aws:dynamodb:us-west-2:123456789012:table/Thread",
    //         "AttributeDefinitions": [
    //             {
    //                 "AttributeName": "ForumName",
    //                 "AttributeType": "S"
    //             },
    //             {
    //                 "AttributeName": "LastPostDateTime",
    //                 "AttributeType": "S"
    //             },
    //             {
    //                 "AttributeName": "Subject",
    //                 "AttributeType": "S"
    //             }
    //         ],
    //         "CreationDateTime": 1.36372808007E9,
    //         "ItemCount": 0,
    //         "KeySchema": [
    //             {
    //                 "AttributeName": "ForumName",
    //                 "KeyType": "HASH"
    //             },
    //             {
    //                 "AttributeName": "Subject",
    //                 "KeyType": "RANGE"
    //             }
    //         ],
    //         "LocalSecondaryIndexes": [
    //             {
    //                 "IndexArn": "arn:aws:dynamodb:us-west-2:123456789012:table/Thread/index/LastPostIndex",
    //                 "IndexName": "LastPostIndex",
    //                 "IndexSizeBytes": 0,
    //                 "ItemCount": 0,
    //                 "KeySchema": [
    //                     {
    //                         "AttributeName": "ForumName",
    //                         "KeyType": "HASH"
    //                     },
    //                     {
    //                         "AttributeName": "LastPostDateTime",
    //                         "KeyType": "RANGE"
    //                     }
    //                 ],
    //                 "Projection": {
    //                     "ProjectionType": "KEYS_ONLY"
    //                 }
    //             }
    //         ],
    //         "ProvisionedThroughput": {
    //             "NumberOfDecreasesToday": 0,
    //             "ReadCapacityUnits": 5,
    //             "WriteCapacityUnits": 5
    //         },
    //         "TableName": "Thread",
    //         "TableSizeBytes": 0,
    //         "TableStatus": "CREATING"
    //     }
    // }

    // Sample code for parsing the JSON response...
    // Use the following 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.

    TableDescriptionTableArn = CkJsonObject_stringOf(jsonResponse,"TableDescription.TableArn");
    TableDescriptionCreationDateTime = CkJsonObject_stringOf(jsonResponse,"TableDescription.CreationDateTime");
    TableDescriptionItemCount = CkJsonObject_IntOf(jsonResponse,"TableDescription.ItemCount");
    TableDescriptionProvisionedThroughputNumberOfDecreasesToday = CkJsonObject_IntOf(jsonResponse,"TableDescription.ProvisionedThroughput.NumberOfDecreasesToday");
    TableDescriptionProvisionedThroughputReadCapacityUnits = CkJsonObject_IntOf(jsonResponse,"TableDescription.ProvisionedThroughput.ReadCapacityUnits");
    TableDescriptionProvisionedThroughputWriteCapacityUnits = CkJsonObject_IntOf(jsonResponse,"TableDescription.ProvisionedThroughput.WriteCapacityUnits");
    TableDescriptionTableName = CkJsonObject_stringOf(jsonResponse,"TableDescription.TableName");
    TableDescriptionTableSizeBytes = CkJsonObject_IntOf(jsonResponse,"TableDescription.TableSizeBytes");
    TableDescriptionTableStatus = CkJsonObject_stringOf(jsonResponse,"TableDescription.TableStatus");
    i = 0;
    count_i = CkJsonObject_SizeOfArray(jsonResponse,"TableDescription.AttributeDefinitions");
    while (i < count_i) {
        CkJsonObject_putI(jsonResponse,i);
        AttributeName = CkJsonObject_stringOf(jsonResponse,"TableDescription.AttributeDefinitions[i].AttributeName");
        AttributeType = CkJsonObject_stringOf(jsonResponse,"TableDescription.AttributeDefinitions[i].AttributeType");
        i = i + 1;
    }

    i = 0;
    count_i = CkJsonObject_SizeOfArray(jsonResponse,"TableDescription.KeySchema");
    while (i < count_i) {
        CkJsonObject_putI(jsonResponse,i);
        AttributeName = CkJsonObject_stringOf(jsonResponse,"TableDescription.KeySchema[i].AttributeName");
        KeyType = CkJsonObject_stringOf(jsonResponse,"TableDescription.KeySchema[i].KeyType");
        i = i + 1;
    }

    i = 0;
    count_i = CkJsonObject_SizeOfArray(jsonResponse,"TableDescription.LocalSecondaryIndexes");
    while (i < count_i) {
        CkJsonObject_putI(jsonResponse,i);
        IndexArn = CkJsonObject_stringOf(jsonResponse,"TableDescription.LocalSecondaryIndexes[i].IndexArn");
        IndexName = CkJsonObject_stringOf(jsonResponse,"TableDescription.LocalSecondaryIndexes[i].IndexName");
        IndexSizeBytes = CkJsonObject_IntOf(jsonResponse,"TableDescription.LocalSecondaryIndexes[i].IndexSizeBytes");
        ItemCount = CkJsonObject_IntOf(jsonResponse,"TableDescription.LocalSecondaryIndexes[i].ItemCount");
        ProjectionProjectionType = CkJsonObject_stringOf(jsonResponse,"TableDescription.LocalSecondaryIndexes[i].Projection.ProjectionType");
        j = 0;
        count_j = CkJsonObject_SizeOfArray(jsonResponse,"TableDescription.LocalSecondaryIndexes[i].KeySchema");
        while (j < count_j) {
            CkJsonObject_putJ(jsonResponse,j);
            AttributeName = CkJsonObject_stringOf(jsonResponse,"TableDescription.LocalSecondaryIndexes[i].KeySchema[j].AttributeName");
            KeyType = CkJsonObject_stringOf(jsonResponse,"TableDescription.LocalSecondaryIndexes[i].KeySchema[j].KeyType");
            j = j + 1;
        }

        i = i + 1;
    }



    CkRest_Dispose(rest);
    CkAuthAws_Dispose(authAws);
    CkJsonObject_Dispose(json);
    CkStringBuilder_Dispose(sbRequestBody);
    CkStringBuilder_Dispose(sbResponseBody);
    CkJsonObject_Dispose(jsonResponse);

    }

 

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