DataFlex

ETrade Renew Access Token

See more ETrade Examples

Renews an ETrade OAuth access token. DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoHttp
Token    Handle hoJsonToken
    Variant vResp
    Handle hoResp
    Variant vSbRespBody
    Handle hoSbRespBody
    Handle hoHashTab
    String sAccessToken
    String sAccessTokenSecret
    Handle hoJson
    Handle hoFac
    String sTemp1
    Integer iTemp1
    Boolean bTemp1

    Move False To iSuccess

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

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End

    Set ComOAuth1 Of hoHttp To True
    Set ComOAuthVerifier Of hoHttp To ""
    Set ComOAuthConsumerKey Of hoHttp To "ETRADE_CONSUMER_KEY"
    Set ComOAuthConsumerSecret Of hoHttp To "ETRADE_CONSUMER_SECRET"

    // Load the access token previously obtained via the OAuth1 Authorization
    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonToken
    If (Not(IsComObjectCreated(hoJsonToken))) Begin
        Send CreateComObject of hoJsonToken
    End
    Get ComLoadFile Of hoJsonToken "qa_data/tokens/etrade.json" To iSuccess
    If (iSuccess <> True) Begin
        Showln "Failed to load OAuth1 token"
        Procedure_Return
    End

    Get ComStringOf Of hoJsonToken "oauth_token" To sTemp1
    Set ComOAuthToken Of hoHttp To sTemp1
    Get ComStringOf Of hoJsonToken "oauth_token_secret" To sTemp1
    Set ComOAuthTokenSecret Of hoHttp To sTemp1

    Get Create (RefClass(cComChilkatHttpResponse)) To hoResp
    If (Not(IsComObjectCreated(hoResp))) Begin
        Send CreateComObject of hoResp
    End
    Get pvComObject of hoResp to vResp
    Get ComHttpNoBody Of hoHttp "GET" "https://api.etrade.com/oauth/renew_access_token" vResp To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Make sure a successful response was received.
    Get ComStatusCode Of hoResp To iTemp1
    If (iTemp1 <> 200) Begin
        Get ComStatusLine Of hoResp To sTemp1
        Showln sTemp1
        Get ComHeader Of hoResp To sTemp1
        Showln sTemp1
        Get ComBodyStr Of hoResp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // If successful, the resp.BodyStr contains something like this:
    // oauth_token=%3TiQRgQCRGPo7Xdk6G8QDSEzX0Jsy6sKNcULcDavAGgU%3D&oauth_token_secret=%7RrC9scEpzcwSEMy4vE7nodSzPLqfRINnTNY4voczyFM%3D
    Get ComBodyStr Of hoResp To sTemp1
    Showln sTemp1

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbRespBody
    If (Not(IsComObjectCreated(hoSbRespBody))) Begin
        Send CreateComObject of hoSbRespBody
    End
    Get pvComObject of hoSbRespBody to vSbRespBody
    Get ComGetBodySb Of hoResp vSbRespBody To iSuccess
    Get ComContentsEqual Of hoSbRespBody "Access Token has been renewed" False To bTemp1
    If (bTemp1) Begin
        // The documentation at https://apisb.etrade.com/docs/api/authorization/renew_access_token.html
        // indicates that the response should be as described above.  However, the response received when
        // trying to refresh a non-expired token was "Access Token has been renewed"
        Showln "Keeping the same access token, but it's renewed..."
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatHashtable)) To hoHashTab
    If (Not(IsComObjectCreated(hoHashTab))) Begin
        Send CreateComObject of hoHashTab
    End
    Get ComBodyStr Of hoResp To sTemp1
    Get ComAddQueryParams Of hoHashTab sTemp1 To iSuccess

    Get ComLookupStr Of hoHashTab "oauth_token" To sAccessToken
    Get ComLookupStr Of hoHashTab "oauth_token_secret" To sAccessTokenSecret

    // The access token + secret is what should be saved and used for
    // subsequent REST API calls.
    Showln "Access Token = " sAccessToken
    Showln "Access Token Secret = " sAccessTokenSecret

    // Save this access token for future calls.
    // Just in case we need user_id and screen_name, save those also..
    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get ComAppendString Of hoJson "oauth_token" sAccessToken To iSuccess
    Get ComAppendString Of hoJson "oauth_token_secret" sAccessTokenSecret To iSuccess

    Get Create (RefClass(cComCkFileAccess)) To hoFac
    If (Not(IsComObjectCreated(hoFac))) Begin
        Send CreateComObject of hoFac
    End
    Get ComEmit Of hoJson To sTemp1
    Get ComWriteEntireTextFile Of hoFac "qa_data/tokens/etrade.json" sTemp1 "utf-8" False To iSuccess

    Showln "Success."


End_Procedure