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# libweave daemon examples
This directory contains examples implementation of `libweave` device daemons.
## Build
- build all examples
```
make all-examples
```
- build only the light daemon
```
make out/Debug/weave_daemon_light
```
## Pre-requisites
- enable user-service-publishing in avahi daemon
set `disable-user-service-publishing=no` in `/etc/avahi/avahi-daemon.conf`
- restart avahi daemon
```
sudo service avahi-daemon restart
```
## Provisioning
### Generate registration tickets
- go to the [OAuth 2.0 Playground](https://developers.google.com/oauthplayground/)
- `Step 1`: enter the Weave API scope `https://www.googleapis.com/auth/weave.app` and click to `Authorize APIs`
- `Step 2`: click `Exchange authorization code for tokens`
- `Step 3`:
- set `HTTP Method`: `POST`
- set `Request URI`: `https://www.googleapis.com/weave/v1/registrationTickets`
- click `Enter request body`: `{"userEmail": "me"}`
- click `Send the request`
- The `Response` contains a new `registrationTicket` resource.
```
{
"userEmail": "user@google.com",
"kind": "weave#registrationTicket",
"expirationTimeMs": "1443204934855",
"deviceId": "0f8a5ff5-1ef0-ec39-f9d8-66d1caeb9e3d",
"creationTimeMs": "1443204694855",
"id": "93019287-6b26-04a0-22ee-d55ad23a4226"
}
```
- Note: the ticket expires after a few minutes
### Provision the device
- start the daemon with the `registrationTicket` id.
```
sudo out/Debug/weave_daemon_sample --registration_ticket=93019287-6b26-04a0-22ee-d55ad23a4226
```
- the daemon outputs the path to its configuration file and its deviceId
```
Saving settings to /var/lib/weave/weave_settings_XXXXX_config.json
Device registered: 0f8a5ff5-1ef0-ec39-f9d8-66d1caeb9e3d
```
- the device id matches the `cloud_id` in the configuration
```
$ sudo grep "cloud_id" /var/lib/weave/weave_settings_[XXXXX]_config.json
"cloud_id": 0f8a5ff5-1ef0-ec39-f9d8-66d1caeb9e3d
```
- verify that that the device is online in the
[Weave Developers Console](https://weave.google.com/console/),
the [Weave Android app](https://play.google.com/apps/testing/com.google.android.apps.weave.management)
or
the [Weave Chrome app](https://chrome.google.com/webstore/detail/weave-device-manager/pcdgflbjckpjmlofgopidgdfonmnodfm).
### Send Commands
- go to the [Weave Developers Console](https://weave.google.com/console/),
- click `Your devices`
- select your device to show the `Device details` page.
- in the `Available commands` click `_sample.hello`
- set command parameters
- click `RUN COMMAND`
- verify the command is handled correctly by looking at the daemon logs.
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