Chilkat Examples

ChilkatHOME.NET Core C#Android™AutoItCC#C++Chilkat2-PythonCkPythonClassic ASPDataFlexDelphi ActiveXDelphi DLLGoJavaLianjaMono C#Node.jsObjective-CPHP ActiveXPHP ExtensionPerlPowerBuilderPowerShellPureBasicRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++VB.NETVBScriptVisual Basic 6.0Visual FoxProXojo Plugin

PureBasic Examples

Web API Categories

ASN.1
AWS KMS
AWS Misc
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Key Vault
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Cloud Signature CSC
Code Signing
Compression
DKIM / DomainKey
DNS
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
EBICS
ECC
Ed25519
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
GMail SMTP/IMAP/POP
Geolocation
Google APIs
Google Calendar
Google Cloud SQL
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text
HTTP

HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
MS Storage Providers
Microsoft Graph
Misc
NTLM
OAuth1
OAuth2
OIDC
Office365
OneDrive
OpenSSL
Outlook
Outlook Calendar
Outlook Contact
PDF Signatures
PEM
PFX/P12
PKCS11
POP3
PRNG
REST
REST Misc
RSA
SCP
SCard
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
ScMinidriver
SharePoint
SharePoint Online
Signing in the Cloud
Socket/SSL/TLS
Spider
Stream
Tar Archive
ULID/UUID
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl
uncategorized

 

 

 

(PureBasic) Lower-Level REST API Methods (Google Cloud Storage)

The FullRequest* methods, such as FullRequestBinary, FullRequestMultipart, FullRequestNoBody, FullRequestStream, FullRequestString, etc. are high-level REST API methods that both send the request and receive the response. It is often the case that an application needs make a REST call, but with a finer level of control. The Chilkat REST API provides this feature. An application can break a REST call into the following parts:

  1. Send the HTTP request. (via the SendReq* methods)
  2. Receive the HTTP response header. (ReadResponseHeader)
  3. Receive the HTTP response body. (via the ReadRespBody* methods)

This example demonstrates a REST call using SendReqStringBody, ReadResonseHeader, and ReadRespBodyString.

Chilkat PureBasic Module Download

Chilkat PureBasic Module

IncludeFile "CkAuthGoogle.pb"
IncludeFile "CkRest.pb"
IncludeFile "CkJsonObject.pb"

Procedure ChilkatExample()

    ; This example demonstrates a REST call using SendReqStringBody, ReadResonseHeader, and ReadRespBodyString.
    ; It will create a bucket in Google Cloud Storage.
    success.i

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

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

    ; Obtain an access token as shown in one of the following examples:
    ; See Get Access Token using a Service Account JSON Key
    ; See Get Access Token using a P12 File

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

    ; Connect using TLS.
    bAutoReconnect.i = 1
    success = CkRest::ckConnect(rest,"www.googleapis.com",443,1,bAutoReconnect)

    ; Provide the authentication credentials (i.e. the access key)
    success = CkRest::ckSetAuthGoogle(rest,gAuth)

    ; Build the JSON request body for creating a bucket.
    ; The only required property is the "name", but we'll add more
    ; to make a better example..
    jsonReqBody.i = CkJsonObject::ckCreate()
    If jsonReqBody.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkJsonObject::ckAddStringAt(jsonReqBody,-1,"name","chilkat-bucket-c")
    success = CkJsonObject::ckAddStringAt(jsonReqBody,-1,"kind","storage#bucket")
    success = CkJsonObject::ckAddStringAt(jsonReqBody,-1,"location","US")
    success = CkJsonObject::ckAddObjectAt(jsonReqBody,-1,"versioning")

    pObjVersioning.i = CkJsonObject::ckObjectOf(jsonReqBody,"versioning")
    success = CkJsonObject::ckAddBoolAt(pObjVersioning,-1,"enabled",1)
    CkJsonObject::ckDispose(pObjVersioning)

    ; Show the HTTP request body we'll be sending.
    Debug CkJsonObject::ckEmit(jsonReqBody)

    ; Add the required query parameter.
    ; See https://cloud.google.com/storage/docs/json_api/v1/buckets/insert
    success = CkRest::ckAddQueryParam(rest,"project","chilkattest-1050")

    ; Add the Content-Type HTTP request header.
    success = CkRest::ckAddHeader(rest,"Content-Type","application/json; charset=UTF-8")

    ; Send the REST HTTP request.
    success = CkRest::ckSendReqStringBody(rest,"POST","/storage/v1/b",CkJsonObject::ckEmit(jsonReqBody))
    If success <> 1
        Debug CkRest::ckLastErrorText(rest)
        CkAuthGoogle::ckDispose(gAuth)
        CkRest::ckDispose(rest)
        CkJsonObject::ckDispose(jsonReqBody)
        ProcedureReturn
    EndIf

    ; Read the response header.
    responseStatusCode.i = CkRest::ckReadResponseHeader(rest)
    If responseStatusCode < 0
        ; We were unable to receive the response header.
        Debug CkRest::ckLastErrorText(rest)
        CkAuthGoogle::ckDispose(gAuth)
        CkRest::ckDispose(rest)
        CkJsonObject::ckDispose(jsonReqBody)
        ProcedureReturn
    EndIf

    If responseStatusCode <> 200
        ; The response was not successful.  We'll still need to receive 
        ; the response body, which may contain an error message from the server.
        ; If the response has no body, then the method for reading the
        ; response body can still be called.  It will simply return with an empty
        ; response body.

        ; We can examine the response header and status text:
        Debug "Response status text: " + CkRest::ckResponseStatusText(rest)
        Debug "Response header: " + CkRest::ckResponseHeader(rest)
    EndIf

    ; Read the response body.  In this case we're expecting it to be JSON..
    responseBodyStr.s = CkRest::ckReadRespBodyString(rest)
    If CkRest::ckLastMethodSuccess(rest) <> 1
        ; We were unable to receive the response body.
        ; Note: If the response did not include a body (such as for cases where
        ; the Content-Length header is 0, or if the response status code implicitly
        ; indicates no body, then ReadRespBodyString returns cktrue, and the
        ; responseBodyString will be an empty string.
        Debug CkRest::ckLastErrorText(rest)
        CkAuthGoogle::ckDispose(gAuth)
        CkRest::ckDispose(rest)
        CkJsonObject::ckDispose(jsonReqBody)
        ProcedureReturn
    EndIf

    ; Show the JSON response.
    Debug "Json Response: " + responseBodyStr


    CkAuthGoogle::ckDispose(gAuth)
    CkRest::ckDispose(rest)
    CkJsonObject::ckDispose(jsonReqBody)


    ProcedureReturn
EndProcedure

 

© 2000-2024 Chilkat Software, Inc. All Rights Reserved.