Unable to get access token to save.

[srini-daruna]

Hi,

I need to save Access token for the logged in user. But, facebook connector is giving wrong access token in authorize response. How could I get the correct access token that is being used and save it.?

[srini-daruna]

Got the error message when tried to retrieve... Even with the latest snap shot.
Expression Evaluator "header" with expression "inbound:OAuthAccessToken" returned null but a value was required.

flow that has been tried...

<objectstore:
store config-ref="ObjectStore" key="token"
value-ref="#[header:INBOUND:OAuthAccessToken]" overwrite="true" doc:name="Copy_of_ObjectStore"/>
<objectstore:retrieve
config-ref="ObjectStore" key="token"
targetScope="OUTBOUND" doc:name="Copy_of_ObjectStore"/>

[fernandezlautaro]

could you paste what you are trying to achieve?
thanks!

[srini-daruna]

Hi Fernandez,

Thanks for your response. Below it the piece of code that i have tried, I am calling object store immediately after authorize. But it is giving error as mentioned above.

<flow name="authorize_flow" doc:name="authorize_flow"
            doc:description="This flow takes care of Authentication of User">
  <http:inbound-endpoint exchange-pattern="request-response"
                host="${mule.host}" port="${mule.port}" path="fb_authorize" doc:name="HTTP" />
  <facebook:authorize config-ref="Facebook"
                doc:name="Facebook" />
  <objectstore:store key="OAuthAccessToken"
                value-ref="#[header:INBOUND:OAuthAccessToken]" />
  <objectstore:store key="OAuthAccessTokenSecret"
                value-ref="#[header:INBOUND:OAuthAccessTokenSecret]" />
  <flow-ref name="getUser" doc:name="Flow Reference" />
</flow>

[srini-daruna]

Sorry, xml is getting formatted in the comment. Precisely, i am calling authorize with the connector and then calling object store to save access token. Then i got the error as mentioned in my first comment.

[fernandezlautaro]

Hi,
It seems you are trying to use the old support for OAuth2, where DevKit stored the tokens in a different way (this is 3.4.x version of DevKit).

If you are using the latest version of facebook-connector (which relays on DevKit 3.5.x) DevKit will use a different mechanism to save/restore the tokens. Take a look at http://blogs.mulesoft.org/oauth-2-just-got-a-bit-easier/ and http://blogs.mulesoft.org/mule-oauth2-support-even-easier-still/ for some deep knowledge on what has changed

HTH,
Lautaro