ListChangedBlocks C Example
#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 BlockIndex;
const char *FirstBlockToken;
const char *SecondBlockToken;
int BlockSize;
int ExpiryTime;
const char *NextToken;
int VolumeSize;
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,"ebs");
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRest_SetAuthAws(rest,authAws);
// URL: https://ebs.us-west-2.amazonaws.com/
// Use the same region as specified above.
success = CkRest_Connect(rest,"ebs.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","ListChangedBlocks");
sbResponseBody = CkStringBuilder_Create();
success = CkRest_FullRequestNoBodySb(rest,"GET","/snapshots/{secondSnapshotId}/changedblocks",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.
BlockSize = CkJsonObject_IntOf(jResp,"BlockSize");
ExpiryTime = CkJsonObject_IntOf(jResp,"ExpiryTime");
NextToken = CkJsonObject_stringOf(jResp,"NextToken");
VolumeSize = CkJsonObject_IntOf(jResp,"VolumeSize");
i = 0;
count_i = CkJsonObject_SizeOfArray(jResp,"ChangedBlocks");
while (i < count_i) {
CkJsonObject_putI(jResp,i);
BlockIndex = CkJsonObject_IntOf(jResp,"ChangedBlocks[i].BlockIndex");
FirstBlockToken = CkJsonObject_stringOf(jResp,"ChangedBlocks[i].FirstBlockToken");
SecondBlockToken = CkJsonObject_stringOf(jResp,"ChangedBlocks[i].SecondBlockToken");
i = i + 1;
}
// A sample JSON response body parsed by the above code:
// {
// "BlockSize": number,
// "ChangedBlocks": [
// {
// "BlockIndex": number,
// "FirstBlockToken": "string",
// "SecondBlockToken": "string"
// }
// ],
// "ExpiryTime": number,
// "NextToken": "string",
// "VolumeSize": number
// }
CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);
}