Chilkat Online Tools

DescribeDatastore PureBasic Example

AWS IoT Analytics

IncludeFile "CkJsonObject.pb"
IncludeFile "CkStringBuilder.pb"
IncludeFile "CkRest.pb"
IncludeFile "CkAuthAws.pb"

Procedure ChilkatExample()

    ; This example requires the Chilkat API to have been previously unlocked.
    ; See Global Unlock Sample for sample code.

    rest.i = CkRest::ckCreate()
    If rest.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success.i

    authAws.i = CkAuthAws::ckCreate()
    If authAws.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkAuthAws::setCkAccessKey(authAws, "AWS_ACCESS_KEY")
    CkAuthAws::setCkSecretKey(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::setCkRegion(authAws, "us-west-2")
    CkAuthAws::setCkServiceName(authAws, "iotanalytics")
    ; SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    CkRest::ckSetAuthAws(rest,authAws)

    ; URL: https://iotanalytics.us-west-2.amazonaws.com/
    ; Use the same region as specified above.
    success = CkRest::ckConnect(rest,"iotanalytics.us-west-2.amazonaws.com",443,1,1)
    If success <> 1
        Debug "ConnectFailReason: " + Str(CkRest::ckConnectFailReason(rest))
        Debug CkRest::ckLastErrorText(rest)
        CkRest::ckDispose(rest)
        CkAuthAws::ckDispose(authAws)
        ProcedureReturn
    EndIf

    CkRest::ckAddHeader(rest,"Content-Type","application/x-amz-json-1.1")
    CkRest::ckAddHeader(rest,"X-Amz-Target","DescribeDatastore")

    sbResponseBody.i = CkStringBuilder::ckCreate()
    If sbResponseBody.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkRest::ckFullRequestNoBodySb(rest,"GET","/datastores/{datastoreName}",sbResponseBody)
    If success <> 1
        Debug CkRest::ckLastErrorText(rest)
        CkRest::ckDispose(rest)
        CkAuthAws::ckDispose(authAws)
        CkStringBuilder::ckDispose(sbResponseBody)
        ProcedureReturn
    EndIf

    respStatusCode.i = CkRest::ckResponseStatusCode(rest)
    Debug "response status code = " + Str(respStatusCode)
    If respStatusCode <> 200
        Debug "Response Header:"
        Debug CkRest::ckResponseHeader(rest)
        Debug "Response Body:"
        Debug CkStringBuilder::ckGetAsString(sbResponseBody)
        CkRest::ckDispose(rest)
        CkAuthAws::ckDispose(authAws)
        CkStringBuilder::ckDispose(sbResponseBody)
        ProcedureReturn
    EndIf

    jResp.i = CkJsonObject::ckCreate()
    If jResp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckLoadSb(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

    AttributeName.s
    timestampPartitionAttributeName.s
    TimestampFormat.s
    name.s
    v_type.s

    Arn.s = CkJsonObject::ckStringOf(jResp,"datastore.arn")
    CreationTime.i = CkJsonObject::ckIntOf(jResp,"datastore.creationTime")
    LastMessageArrivalTime.i = CkJsonObject::ckIntOf(jResp,"datastore.lastMessageArrivalTime")
    LastUpdateTime.i = CkJsonObject::ckIntOf(jResp,"datastore.lastUpdateTime")
    Name.s = CkJsonObject::ckStringOf(jResp,"datastore.name")
    NumberOfDays.i = CkJsonObject::ckIntOf(jResp,"datastore.retentionPeriod.numberOfDays")
    Unlimited.i = CkJsonObject::ckIntOf(jResp,"datastore.retentionPeriod.unlimited")
    Status.s = CkJsonObject::ckStringOf(jResp,"datastore.status")
    Bucket.s = CkJsonObject::ckStringOf(jResp,"datastore.storage.customerManagedS3.bucket")
    KeyPrefix.s = CkJsonObject::ckStringOf(jResp,"datastore.storage.customerManagedS3.keyPrefix")
    RoleArn.s = CkJsonObject::ckStringOf(jResp,"datastore.storage.customerManagedS3.roleArn")
    CustomerManagedS3StorageBucket.s = CkJsonObject::ckStringOf(jResp,"datastore.storage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.bucket")
    CustomerManagedS3StorageKeyPrefix.s = CkJsonObject::ckStringOf(jResp,"datastore.storage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.keyPrefix")
    EstimatedOn.i = CkJsonObject::ckIntOf(jResp,"statistics.size.estimatedOn")
    EstimatedSizeInBytes.i = CkJsonObject::ckIntOf(jResp,"statistics.size.estimatedSizeInBytes")
    i.i = 0
    count_i.i = CkJsonObject::ckSizeOfArray(jResp,"datastore.datastorePartitions.partitions")
    While i < count_i
        CkJsonObject::setCkI(jResp, i)
        AttributeName = CkJsonObject::ckStringOf(jResp,"datastore.datastorePartitions.partitions[i].attributePartition.attributeName")
        timestampPartitionAttributeName = CkJsonObject::ckStringOf(jResp,"datastore.datastorePartitions.partitions[i].timestampPartition.attributeName")
        TimestampFormat = CkJsonObject::ckStringOf(jResp,"datastore.datastorePartitions.partitions[i].timestampPartition.timestampFormat")
        i = i + 1
    Wend
    i = 0
    count_i = CkJsonObject::ckSizeOfArray(jResp,"datastore.fileFormatConfiguration.parquetConfiguration.schemaDefinition.columns")
    While i < count_i
        CkJsonObject::setCkI(jResp, i)
        name = CkJsonObject::ckStringOf(jResp,"datastore.fileFormatConfiguration.parquetConfiguration.schemaDefinition.columns[i].name")
        v_type = CkJsonObject::ckStringOf(jResp,"datastore.fileFormatConfiguration.parquetConfiguration.schemaDefinition.columns[i].type")
        i = i + 1
    Wend

    ; 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::ckDispose(rest)
    CkAuthAws::ckDispose(authAws)
    CkStringBuilder::ckDispose(sbResponseBody)
    CkJsonObject::ckDispose(jResp)


    ProcedureReturn
EndProcedure