Is there a way to access an attachment file from within the action (alias) ?

[fti-lit]

Hi,
I’m using the slack hubot, and can use custom commands without problems.
I’m now trying to use commands with attached files.
Inspecting a little bit, I see that in the chatops.post_result that is used to send the result of the command, there is a context parameter that is filled with a dict. In this dict there is enough information for me to download the file (using message.rawMessage.files.url_private and core.http for instance).
But I cannot access it from the action linked to the alias.

I tried to access this raw data:

• in the alias definition file, using an immutable_parameters. I’ve tried {{payload}}, {{trigger}}, {{data}}, {{context}},… but they are all undefined of course…
• in the action definition file, with action_context
• in the workflow file, with ctx().st2, task(), st2kv

I noticed that the raw data is in the payload of the triggered-instance core.st2.generic.notifytrigger ( st2 trigger-instance get 6273c2c6812a95aa417dbfe5 could give me what I want, but it is executed after the workflow and obviously, I need to access the data during the workflow, not after...), but I didn’t manage to understand how the data is passed to the rule.

Is there a way to access that data? Using st2kv, the action id,… anything !

[fti-lit]

I managed to find the url in the mongodb, using ctx().st2.action_execution_id as a parameter:

def run(self, idexec):
    # get connection informations
    username = quote_plus(getattr(cfg.CONF.database, "username", None))
    password = quote_plus(getattr(cfg.CONF.database, "password", None))
    db_name = cfg.CONF.database.db_name
    db_host = cfg.CONF.database.host
    db_port = cfg.CONF.database.port
    try:
        mdb = pymongo.MongoClient('mongodb://%s:%s@%s:%s/%s' % (username, password, db_host, db_port, db_name))
    except Exception as inst:
        print("Login failed")
        return (False, {"message": "Failed mongodb login"})
    stdb = mdb.st2
    collectionkvp = stdb.action_execution_d_b
    actionexec = collectionkvp.find_one(ObjectId(idexec))
    mdb.close()
    try:
        url = actionexec["liveaction"]["notify"]["on-complete"]["data"]["source_context"]["message"]["rawMessage"]["files"][0]["url_private"]
    except Exception as inst:
        print("No file?")
        print(actionexec)
        return (False, {"message": "Couldn’t get the url. Is the file attached to the message?"})

    return (True, {"urlf": url})

Hopefully it can help someone else.