Spark.publish - errors

Cloud
1

Hi,

I created a “spark.publish event” in my code. When trying to run:

curl -H “Authorization: Bearer {my-access-token}” https://api.spark.io/v1/events/toto/xyz

I get an error message:

{
“code”: 400,
“error”: “invalid_grant”,
“error_description”: “The access token provided is invalid.”
}

I used the access token on the “Settings” page with my curl statement.

Anyone ay idea what goes wrong here?

Thanks.

2

I’ve personally got a couple of files in which my acces tokens are stored. Could it be that you’ve taken yours out of a similar one, while the “live” one has expired in the mean time? Or did you really take it directly out of the IDE?

3

I took the one in the IDE; and since this one didn’t work i tried by resetting the token. So yes the token comes from the IDE.

Thanks.

4

@gdillen I’m not sure what’s wrong. I can run

curl -H "Authorization: Bearer {my-access-token}" https://api.spark.io/v1/events/brett-test

Which works when a core publishes the brett-test event.

I’ve been trying to recreate your error. If I switch one of the letters in my access token from lower case to upper case, then I get the exact error message. Maybe that’s your problem?

UPDATE: I tried my access token with all upper case letters, and I get the invalid_grant error. All lower case works.

5

@brett13: thanks… but all my tokens are in lowercase.

6

@gdillen Got me stumped then. I’ll pull in the Spark guys @Dave @jgoggins

7

Why don’t you try the other URL syntax and see if that works for you:

https://api.spark.io/v1/devices/events/?access_token=<<access token hex number here>>

This is the public stream of events, so there should be a lot of them for you to see for testing.

8

@bko this seems to work. i get an “:ok”; at least it doesn’t give the invalid grant & invalid access token errors.

9

Hey Gang,

Hmm, no reason why the bearer token shouldn’t work, but it’s possible curl was not sending a GET request, so it might help to specify that method with a -X GET or something. :smile:

Thanks,
David

2 Likes
10

Hey @bko, great suggestion, the URL you shared is not the public stream though, subtle mistake, no need for the “/devices” in there. I thought you had it right too, but then tried it myself, and looked closer at the docs Both the following requests do the same thing:

curl -H "Authorization: Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" https://api.spark.io/v1/events

and

curl 'https://api.spark.io/v1/events?access_token=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'

11

@jgoggins the public events curl work.

Here’s my code I commented out (and don’t publish all the code) and left only the Spark.publish event statement.

void setup() {

}

void loop() {

 Spark.publish("my-event", "TEST", 60, PRIVATE);

}

UPDATE: obviously the { and } are not part of the statement in the curl; as @jgoggins mentions
curl -H “Authorization: Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx” https://api.spark.io/v1/events/my-event
works; it displays “:ok”, but not “TEST” during the execution of every loop.

12

My bad! Cut and paste error from some working code.

Thanks for the correction.

13

You know that event publishing is rate-limited, right? You will be limited to one per second on average with a burst of up to four events allowed. Have you factored that into your sketch somehow?

14

@bko yes i did. I only publish when an interrupt event (so in an interrupt handler) happens. The code I showed was only to solve the problem with the access token.

UPDATE: working fine now.

Thanks to all.

1 Like
15

Rad! Glad you are up and running @gdillen ! :smile: