Chilkat Online Tools

CreateFunction C Example

AWS AppSync

#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;
    HCkJsonObject json;
    HCkStringBuilder sbRequestBody;
    HCkStringBuilder sbResponseBody;
    int respStatusCode;
    HCkJsonObject jResp;
    const char *DataSourceName;
    const char *Description;
    const char *FunctionArn;
    const char *FunctionId;
    const char *FunctionVersion;
    int MaxBatchSize;
    const char *Name;
    const char *RequestMappingTemplate;
    const char *ResponseMappingTemplate;
    const char *ConflictDetection;
    const char *ConflictHandler;
    const char *LambdaConflictHandlerArn;

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

    // URL: https://appsync.us-west-2.amazonaws.com/
    // Use the same region as specified above.
    success = CkRest_Connect(rest,"appsync.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;
    }

    // The following code creates the JSON request body.
    // The JSON created by this code is shown below.

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

    json = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"dataSourceName","string");
    CkJsonObject_UpdateString(json,"description","string");
    CkJsonObject_UpdateString(json,"functionVersion","string");
    CkJsonObject_UpdateInt(json,"maxBatchSize",123);
    CkJsonObject_UpdateString(json,"name","string");
    CkJsonObject_UpdateString(json,"requestMappingTemplate","string");
    CkJsonObject_UpdateString(json,"responseMappingTemplate","string");
    CkJsonObject_UpdateString(json,"syncConfig.conflictDetection","string");
    CkJsonObject_UpdateString(json,"syncConfig.conflictHandler","string");
    CkJsonObject_UpdateString(json,"syncConfig.lambdaConflictHandlerConfig.lambdaConflictHandlerArn","string");

    // The JSON request body created by the above code:

    // {
    //   "dataSourceName": "string",
    //   "description": "string",
    //   "functionVersion": "string",
    //   "maxBatchSize": number,
    //   "name": "string",
    //   "requestMappingTemplate": "string",
    //   "responseMappingTemplate": "string",
    //   "syncConfig": {
    //     "conflictDetection": "string",
    //     "conflictHandler": "string",
    //     "lambdaConflictHandlerConfig": {
    //       "lambdaConflictHandlerArn": "string"
    //     }
    //   }
    // }

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

    sbRequestBody = CkStringBuilder_Create();
    CkJsonObject_EmitSb(json,sbRequestBody);
    sbResponseBody = CkStringBuilder_Create();
    success = CkRest_FullRequestSb(rest,"POST","/v1/apis/{apiId}/functions",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 != 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);
        CkJsonObject_Dispose(json);
        CkStringBuilder_Dispose(sbRequestBody);
        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.

    DataSourceName = CkJsonObject_stringOf(jResp,"functionConfiguration.dataSourceName");
    Description = CkJsonObject_stringOf(jResp,"functionConfiguration.description");
    FunctionArn = CkJsonObject_stringOf(jResp,"functionConfiguration.functionArn");
    FunctionId = CkJsonObject_stringOf(jResp,"functionConfiguration.functionId");
    FunctionVersion = CkJsonObject_stringOf(jResp,"functionConfiguration.functionVersion");
    MaxBatchSize = CkJsonObject_IntOf(jResp,"functionConfiguration.maxBatchSize");
    Name = CkJsonObject_stringOf(jResp,"functionConfiguration.name");
    RequestMappingTemplate = CkJsonObject_stringOf(jResp,"functionConfiguration.requestMappingTemplate");
    ResponseMappingTemplate = CkJsonObject_stringOf(jResp,"functionConfiguration.responseMappingTemplate");
    ConflictDetection = CkJsonObject_stringOf(jResp,"functionConfiguration.syncConfig.conflictDetection");
    ConflictHandler = CkJsonObject_stringOf(jResp,"functionConfiguration.syncConfig.conflictHandler");
    LambdaConflictHandlerArn = CkJsonObject_stringOf(jResp,"functionConfiguration.syncConfig.lambdaConflictHandlerConfig.lambdaConflictHandlerArn");

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

    // {
    //   "functionConfiguration": {
    //     "dataSourceName": "string",
    //     "description": "string",
    //     "functionArn": "string",
    //     "functionId": "string",
    //     "functionVersion": "string",
    //     "maxBatchSize": number,
    //     "name": "string",
    //     "requestMappingTemplate": "string",
    //     "responseMappingTemplate": "string",
    //     "syncConfig": {
    //       "conflictDetection": "string",
    //       "conflictHandler": "string",
    //       "lambdaConflictHandlerConfig": {
    //         "lambdaConflictHandlerArn": "string"
    //       }
    //     }
    //   }
    // }


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

    }