Shadow in Greengrass Core doesn't work ESP32

[luclissi]

Hello, I'm trying to use the example-shadow-js the right one with AWS and it works perfectly, but when I put it in the greengrass's core, the shadow doesn't work.

When I do Shadow.update(0, {reported: {uptime: Sys.uptime()}}); the return is event: "???" and obj: {}

I've tried make with shadow subscriptions and with version 1.20 of aws lib and it works.

This is my config after discovery:

{
  "device": {
    "id": "my_thing"
  },
  "mqtt": {
    "enable": true,
    "server": "192.168.10.106:8883",
    "client_id": "my_thing",
    "ssl_cert": "certificate.pem",
    "ssl_key": "private.key",
    "ssl_ca_cert": "aws-gg-ca.pem",
    "max_qos": 0
  },
  "shadow": {
    "lib": "aws"
  },
  "aws": {
    "thing_name": "my_thing",
    "greengrass": {
      "enable": true
    }
  },
  "bt": {
    "enable": false
  },
  "wifi": {
    "sta": {
      "enable": true,
      "ssid": "why-fi",
      "pass": "passofwifi"
    },
    "ap": {
      "enable": false
    }
  }
}

Thanks! ;D

[brunoasouza]

I have the same problem... :(

Please help!!

[supermock]

I have this problem too! @rojer @cpq

[mrtj]

I found this thread googling "greengrass core shadow not found", so I've nothing to do with Mongoose OS. But meanwhile I found out that the shadow syncing for AWS Greengrass Core is not enabled by default and there is no way to enable it from the AWS console. An AWS CLI based solution is described in https://forums.aws.amazon.com/thread.jspa?messageID=871099, it takes the last version of the core definition, modifies it enabling shadow syncing and saves the new version so you can deploy it to the core. I coded the CLI commands into a python script to make it more easy to execute. Maybe you find it useful: https://gist.github.com/mrtj/7d25a7d0505e4158e93d8f4778f30221

[ghost]

I was facing a similar issue (see my reported issue https://github.com/mongoose-os-libs/aws/issues/11) I fixed it with pull request https://github.com/mongoose-os-libs/aws/pull/10

[cpq]

Integrated @ZenDIY 's fix. In order to work, the config must explicitly set shadow library:

config_schema:
  - ["shadow.lib", "aws"]
  ...

Update to the latest version:

mos update latest
mos build