Chilkat Online Tools

StartSentimentDetectionJob VB.NET Example

Amazon Comprehend

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

Dim rest As New Chilkat.Rest
Dim success As Boolean

Dim authAws As New Chilkat.AuthAws
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "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.)
authAws.Region = "us-west-2"
authAws.ServiceName = "comprehend"
' SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
rest.SetAuthAws(authAws)

' URL: https://comprehend.us-west-2.amazonaws.com/
' Use the same region as specified above.
success = rest.Connect("comprehend.us-west-2.amazonaws.com",443,True,True)
If (success <> True) Then
    Debug.WriteLine("ConnectFailReason: " & rest.ConnectFailReason)
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


' The following code creates the JSON request body.
' The JSON created by this code is shown below.

' Use this online tool to generate code from sample JSON:
' Generate Code to Create JSON

Dim json As New Chilkat.JsonObject
json.UpdateString("ClientRequestToken","string")
json.UpdateString("DataAccessRoleArn","string")
json.UpdateString("InputDataConfig.DocumentReaderConfig.DocumentReadAction","string")
json.UpdateString("InputDataConfig.DocumentReaderConfig.DocumentReadMode","string")
json.UpdateString("InputDataConfig.DocumentReaderConfig.FeatureTypes[0]","string")
json.UpdateString("InputDataConfig.InputFormat","string")
json.UpdateString("InputDataConfig.S3Uri","string")
json.UpdateString("JobName","string")
json.UpdateString("LanguageCode","string")
json.UpdateString("OutputDataConfig.KmsKeyId","string")
json.UpdateString("OutputDataConfig.S3Uri","string")
json.UpdateString("Tags[0].Key","string")
json.UpdateString("Tags[0].Value","string")
json.UpdateString("VolumeKmsKeyId","string")
json.UpdateString("VpcConfig.SecurityGroupIds[0]","string")
json.UpdateString("VpcConfig.Subnets[0]","string")

' The JSON request body created by the above code:

' {
'   "ClientRequestToken": "string",
'   "DataAccessRoleArn": "string",
'   "InputDataConfig": {
'     "DocumentReaderConfig": {
'       "DocumentReadAction": "string",
'       "DocumentReadMode": "string",
'       "FeatureTypes": [
'         "string"
'       ]
'     },
'     "InputFormat": "string",
'     "S3Uri": "string"
'   },
'   "JobName": "string",
'   "LanguageCode": "string",
'   "OutputDataConfig": {
'     "KmsKeyId": "string",
'     "S3Uri": "string"
'   },
'   "Tags": [
'     {
'       "Key": "string",
'       "Value": "string"
'     }
'   ],
'   "VolumeKmsKeyId": "string",
'   "VpcConfig": {
'     "SecurityGroupIds": [
'       "string"
'     ],
'     "Subnets": [
'       "string"
'     ]
'   }
' }

rest.AddHeader("Content-Type","application/x-amz-json-1.1")
rest.AddHeader("X-Amz-Target","Comprehend_20171127.StartSentimentDetectionJob")

Dim sbRequestBody As New Chilkat.StringBuilder
json.EmitSb(sbRequestBody)
Dim sbResponseBody As New Chilkat.StringBuilder
success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If

Dim respStatusCode As Integer = rest.ResponseStatusCode
Debug.WriteLine("response status code = " & respStatusCode)
If (respStatusCode <> 200) Then
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(rest.ResponseHeader)
    Debug.WriteLine("Response Body:")
    Debug.WriteLine(sbResponseBody.GetAsString())
    Exit Sub
End If


Dim jResp As New Chilkat.JsonObject
jResp.LoadSb(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




Dim JobArn As String = jResp.StringOf("JobArn")
Dim JobId As String = jResp.StringOf("JobId")
Dim JobStatus As String = jResp.StringOf("JobStatus")


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

' {
'   "JobArn": "string",
'   "JobId": "string",
'   "JobStatus": "string"
' }