DescribeDatastore Unicode C Example
#include <C_CkRestW.h>
#include <C_CkAuthAwsW.h>
#include <C_CkStringBuilderW.h>
#include <C_CkJsonObjectW.h>
void ChilkatSample(void)
{
HCkRestW rest;
BOOL success;
HCkAuthAwsW authAws;
HCkStringBuilderW sbResponseBody;
int respStatusCode;
HCkJsonObjectW jResp;
const wchar_t *AttributeName;
const wchar_t *timestampPartitionAttributeName;
const wchar_t *TimestampFormat;
const wchar_t *name;
const wchar_t *v_type;
const wchar_t *Arn;
int CreationTime;
int LastMessageArrivalTime;
int LastUpdateTime;
const wchar_t *Name;
int NumberOfDays;
int Unlimited;
const wchar_t *Status;
const wchar_t *Bucket;
const wchar_t *KeyPrefix;
const wchar_t *RoleArn;
const wchar_t *CustomerManagedS3StorageBucket;
const wchar_t *CustomerManagedS3StorageKeyPrefix;
int EstimatedOn;
int EstimatedSizeInBytes;
int i;
int count_i;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
rest = CkRestW_Create();
authAws = CkAuthAwsW_Create();
CkAuthAwsW_putAccessKey(authAws,L"AWS_ACCESS_KEY");
CkAuthAwsW_putSecretKey(authAws,L"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.)
CkAuthAwsW_putRegion(authAws,L"us-west-2");
CkAuthAwsW_putServiceName(authAws,L"iotanalytics");
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRestW_SetAuthAws(rest,authAws);
// URL: https://iotanalytics.us-west-2.amazonaws.com/
// Use the same region as specified above.
success = CkRestW_Connect(rest,L"iotanalytics.us-west-2.amazonaws.com",443,TRUE,TRUE);
if (success != TRUE) {
wprintf(L"ConnectFailReason: %d\n",CkRestW_getConnectFailReason(rest));
wprintf(L"%s\n",CkRestW_lastErrorText(rest));
CkRestW_Dispose(rest);
CkAuthAwsW_Dispose(authAws);
return;
}
CkRestW_AddHeader(rest,L"Content-Type",L"application/x-amz-json-1.1");
CkRestW_AddHeader(rest,L"X-Amz-Target",L"DescribeDatastore");
sbResponseBody = CkStringBuilderW_Create();
success = CkRestW_FullRequestNoBodySb(rest,L"GET",L"/datastores/{datastoreName}",sbResponseBody);
if (success != TRUE) {
wprintf(L"%s\n",CkRestW_lastErrorText(rest));
CkRestW_Dispose(rest);
CkAuthAwsW_Dispose(authAws);
CkStringBuilderW_Dispose(sbResponseBody);
return;
}
respStatusCode = CkRestW_getResponseStatusCode(rest);
wprintf(L"response status code = %d\n",respStatusCode);
if (respStatusCode != 200) {
wprintf(L"Response Header:\n");
wprintf(L"%s\n",CkRestW_responseHeader(rest));
wprintf(L"Response Body:\n");
wprintf(L"%s\n",CkStringBuilderW_getAsString(sbResponseBody));
CkRestW_Dispose(rest);
CkAuthAwsW_Dispose(authAws);
CkStringBuilderW_Dispose(sbResponseBody);
return;
}
jResp = CkJsonObjectW_Create();
CkJsonObjectW_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.
Arn = CkJsonObjectW_stringOf(jResp,L"datastore.arn");
CreationTime = CkJsonObjectW_IntOf(jResp,L"datastore.creationTime");
LastMessageArrivalTime = CkJsonObjectW_IntOf(jResp,L"datastore.lastMessageArrivalTime");
LastUpdateTime = CkJsonObjectW_IntOf(jResp,L"datastore.lastUpdateTime");
Name = CkJsonObjectW_stringOf(jResp,L"datastore.name");
NumberOfDays = CkJsonObjectW_IntOf(jResp,L"datastore.retentionPeriod.numberOfDays");
Unlimited = CkJsonObjectW_IntOf(jResp,L"datastore.retentionPeriod.unlimited");
Status = CkJsonObjectW_stringOf(jResp,L"datastore.status");
Bucket = CkJsonObjectW_stringOf(jResp,L"datastore.storage.customerManagedS3.bucket");
KeyPrefix = CkJsonObjectW_stringOf(jResp,L"datastore.storage.customerManagedS3.keyPrefix");
RoleArn = CkJsonObjectW_stringOf(jResp,L"datastore.storage.customerManagedS3.roleArn");
CustomerManagedS3StorageBucket = CkJsonObjectW_stringOf(jResp,L"datastore.storage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.bucket");
CustomerManagedS3StorageKeyPrefix = CkJsonObjectW_stringOf(jResp,L"datastore.storage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.keyPrefix");
EstimatedOn = CkJsonObjectW_IntOf(jResp,L"statistics.size.estimatedOn");
EstimatedSizeInBytes = CkJsonObjectW_IntOf(jResp,L"statistics.size.estimatedSizeInBytes");
i = 0;
count_i = CkJsonObjectW_SizeOfArray(jResp,L"datastore.datastorePartitions.partitions");
while (i < count_i) {
CkJsonObjectW_putI(jResp,i);
AttributeName = CkJsonObjectW_stringOf(jResp,L"datastore.datastorePartitions.partitions[i].attributePartition.attributeName");
timestampPartitionAttributeName = CkJsonObjectW_stringOf(jResp,L"datastore.datastorePartitions.partitions[i].timestampPartition.attributeName");
TimestampFormat = CkJsonObjectW_stringOf(jResp,L"datastore.datastorePartitions.partitions[i].timestampPartition.timestampFormat");
i = i + 1;
}
i = 0;
count_i = CkJsonObjectW_SizeOfArray(jResp,L"datastore.fileFormatConfiguration.parquetConfiguration.schemaDefinition.columns");
while (i < count_i) {
CkJsonObjectW_putI(jResp,i);
name = CkJsonObjectW_stringOf(jResp,L"datastore.fileFormatConfiguration.parquetConfiguration.schemaDefinition.columns[i].name");
v_type = CkJsonObjectW_stringOf(jResp,L"datastore.fileFormatConfiguration.parquetConfiguration.schemaDefinition.columns[i].type");
i = i + 1;
}
// A sample JSON response body parsed by the above code:
// {
// "datastore": {
// "arn": "string",
// "creationTime": number,
// "datastorePartitions": {
// "partitions": [
// {
// "attributePartition": {
// "attributeName": "string"
// },
// "timestampPartition": {
// "attributeName": "string",
// "timestampFormat": "string"
// }
// }
// ]
// },
// "fileFormatConfiguration": {
// "jsonConfiguration": {},
// "parquetConfiguration": {
// "schemaDefinition": {
// "columns": [
// {
// "name": "string",
// "type": "string"
// }
// ]
// }
// }
// },
// "lastMessageArrivalTime": number,
// "lastUpdateTime": number,
// "name": "string",
// "retentionPeriod": {
// "numberOfDays": number,
// "unlimited": boolean
// },
// "status": "string",
// "storage": {
// "customerManagedS3": {
// "bucket": "string",
// "keyPrefix": "string",
// "roleArn": "string"
// },
// "iotSiteWiseMultiLayerStorage": {
// "customerManagedS3Storage": {
// "bucket": "string",
// "keyPrefix": "string"
// }
// },
// "serviceManagedS3": {}
// }
// },
// "statistics": {
// "size": {
// "estimatedOn": number,
// "estimatedSizeInBytes": number
// }
// }
// }
CkRestW_Dispose(rest);
CkAuthAwsW_Dispose(authAws);
CkStringBuilderW_Dispose(sbResponseBody);
CkJsonObjectW_Dispose(jResp);
}
