DescribeDatastore 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;
const char *AttributeName;
const char *timestampPartitionAttributeName;
const char *TimestampFormat;
const char *name;
const char *v_type;
const char *Arn;
int CreationTime;
int LastMessageArrivalTime;
int LastUpdateTime;
const char *Name;
int NumberOfDays;
int Unlimited;
const char *Status;
const char *Bucket;
const char *KeyPrefix;
const char *RoleArn;
const char *CustomerManagedS3StorageBucket;
const char *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 = 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,"iotanalytics");
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRest_SetAuthAws(rest,authAws);
// URL: https://iotanalytics.us-west-2.amazonaws.com/
// Use the same region as specified above.
success = CkRest_Connect(rest,"iotanalytics.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","DescribeDatastore");
sbResponseBody = CkStringBuilder_Create();
success = CkRest_FullRequestNoBodySb(rest,"GET","/datastores/{datastoreName}",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.
Arn = CkJsonObject_stringOf(jResp,"datastore.arn");
CreationTime = CkJsonObject_IntOf(jResp,"datastore.creationTime");
LastMessageArrivalTime = CkJsonObject_IntOf(jResp,"datastore.lastMessageArrivalTime");
LastUpdateTime = CkJsonObject_IntOf(jResp,"datastore.lastUpdateTime");
Name = CkJsonObject_stringOf(jResp,"datastore.name");
NumberOfDays = CkJsonObject_IntOf(jResp,"datastore.retentionPeriod.numberOfDays");
Unlimited = CkJsonObject_IntOf(jResp,"datastore.retentionPeriod.unlimited");
Status = CkJsonObject_stringOf(jResp,"datastore.status");
Bucket = CkJsonObject_stringOf(jResp,"datastore.storage.customerManagedS3.bucket");
KeyPrefix = CkJsonObject_stringOf(jResp,"datastore.storage.customerManagedS3.keyPrefix");
RoleArn = CkJsonObject_stringOf(jResp,"datastore.storage.customerManagedS3.roleArn");
CustomerManagedS3StorageBucket = CkJsonObject_stringOf(jResp,"datastore.storage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.bucket");
CustomerManagedS3StorageKeyPrefix = CkJsonObject_stringOf(jResp,"datastore.storage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.keyPrefix");
EstimatedOn = CkJsonObject_IntOf(jResp,"statistics.size.estimatedOn");
EstimatedSizeInBytes = CkJsonObject_IntOf(jResp,"statistics.size.estimatedSizeInBytes");
i = 0;
count_i = CkJsonObject_SizeOfArray(jResp,"datastore.datastorePartitions.partitions");
while (i < count_i) {
CkJsonObject_putI(jResp,i);
AttributeName = CkJsonObject_stringOf(jResp,"datastore.datastorePartitions.partitions[i].attributePartition.attributeName");
timestampPartitionAttributeName = CkJsonObject_stringOf(jResp,"datastore.datastorePartitions.partitions[i].timestampPartition.attributeName");
TimestampFormat = CkJsonObject_stringOf(jResp,"datastore.datastorePartitions.partitions[i].timestampPartition.timestampFormat");
i = i + 1;
}
i = 0;
count_i = CkJsonObject_SizeOfArray(jResp,"datastore.fileFormatConfiguration.parquetConfiguration.schemaDefinition.columns");
while (i < count_i) {
CkJsonObject_putI(jResp,i);
name = CkJsonObject_stringOf(jResp,"datastore.fileFormatConfiguration.parquetConfiguration.schemaDefinition.columns[i].name");
v_type = CkJsonObject_stringOf(jResp,"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
// }
// }
// }
CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);
}
