Chilkat Online Tools

ListChannelMessages C Example

Amazon Chime

#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;
    const char *Content;
    int CreatedTimestamp;
    int LastEditedTimestamp;
    int LastUpdatedTimestamp;
    const char *MessageId;
    const char *Metadata;
    int Redacted;
    const char *Arn;
    const char *Name;
    const char *v_Type;
    const char *ChannelArn;
    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,"chime");
    // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    CkRest_SetAuthAws(rest,authAws);

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

    sbResponseBody = CkStringBuilder_Create();
    success = CkRest_FullRequestNoBodySb(rest,"GET","/channels/{channelArn}/messages",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.

    ChannelArn = CkJsonObject_stringOf(jResp,"ChannelArn");
    NextToken = CkJsonObject_stringOf(jResp,"NextToken");
    i = 0;
    count_i = CkJsonObject_SizeOfArray(jResp,"ChannelMessages");
    while (i < count_i) {
        CkJsonObject_putI(jResp,i);
        Content = CkJsonObject_stringOf(jResp,"ChannelMessages[i].Content");
        CreatedTimestamp = CkJsonObject_IntOf(jResp,"ChannelMessages[i].CreatedTimestamp");
        LastEditedTimestamp = CkJsonObject_IntOf(jResp,"ChannelMessages[i].LastEditedTimestamp");
        LastUpdatedTimestamp = CkJsonObject_IntOf(jResp,"ChannelMessages[i].LastUpdatedTimestamp");
        MessageId = CkJsonObject_stringOf(jResp,"ChannelMessages[i].MessageId");
        Metadata = CkJsonObject_stringOf(jResp,"ChannelMessages[i].Metadata");
        Redacted = CkJsonObject_IntOf(jResp,"ChannelMessages[i].Redacted");
        Arn = CkJsonObject_stringOf(jResp,"ChannelMessages[i].Sender.Arn");
        Name = CkJsonObject_stringOf(jResp,"ChannelMessages[i].Sender.Name");
        v_Type = CkJsonObject_stringOf(jResp,"ChannelMessages[i].Type");
        i = i + 1;
    }

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

    // {
    //   "ChannelArn": "string",
    //   "ChannelMessages": [
    //     {
    //       "Content": "string",
    //       "CreatedTimestamp": number,
    //       "LastEditedTimestamp": number,
    //       "LastUpdatedTimestamp": number,
    //       "MessageId": "string",
    //       "Metadata": "string",
    //       "Redacted": boolean,
    //       "Sender": {
    //         "Arn": "string",
    //         "Name": "string"
    //       },
    //       "Type": "string"
    //     }
    //   ],
    //   "NextToken": "string"
    // }


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

    }