feat: add snap support

[MonicaisHer]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

If your build fails due to your commit message not passing the build checks, please review the guidelines here: https://github.com/edgexfoundry/edgex-ui-go/blob/master/.github/Contributing.md.

What is the current behavior?

Issue Number:

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

New Imports

• Yes
• No

Specific Instructions

Snap test guideline:

Reminder:

• Do not give names in UI with blank space, better with CamelCase. Blank space will have problems when using REST API
• Make sure all buildings as below install within 1 hour, make sure no other snaps or packages are using Redis server, for example, nmap

Download edgex-ui and snapcraft it:

$ git clone https://github.com/MonicaisHer/edgex-ui-go.git
$ cd edgex-ui-go
$ git checkout add-snap
$ cd snap/local/runtime-helpers/bin
$ chmod u+x edgex-ui-wrapper.sh
$ snap install snapcraft
$ sudo snap install multipass
$ cd /edgex-ui-go  
$ snapcraft 

About 4 minutes, we should see:

Snapped edgex-ui_1.0_amd64.snap

Install edgex-ui snap and edgexfoundry snap:

$ sudo snap remove --purge edgexfoundry
$ sudo snap install edgexfoundry --channel=2.0
$ snap install edgex-ui_1.0_amd64.snap --dangerous

After these steps, edgex-ui and edgexfoundry will automatically running

Check:

$ snap services

we should see:

Service                                    Startup   Current   Notes
edgex-ui.edgex-ui                          enabled   active    -
edgexfoundry.app-service-configurable      enabled   active    -
edgexfoundry.consul                        enabled   active    -
edgexfoundry.core-command                  enabled   active    -
edgexfoundry.core-data                     enabled   active    -
edgexfoundry.core-metadata                 enabled   active    -
edgexfoundry.device-virtual                enabled   active    -
edgexfoundry.kong-daemon                   enabled   active    -
edgexfoundry.kuiper                        enabled   active    -
edgexfoundry.postgres                      enabled   active    -
edgexfoundry.redis                         enabled   active    -
edgexfoundry.security-bootstrapper-redis   enabled   inactive  -
edgexfoundry.security-consul-bootstrapper  enabled   inactive  -
edgexfoundry.security-proxy-setup          enabled   inactive  -
edgexfoundry.security-secretstore-setup    enabled   inactive  -
edgexfoundry.support-notifications         enabled   active    -
edgexfoundry.support-scheduler             enabled   active    -
edgexfoundry.sys-mgmt-agent                disabled  inactive  -
edgexfoundry.vault                         enabled   active    -

Configure edgexfoundry:

$ snap set edgexfoundry device-virtual=on
$ sudo snap set edgexfoundry support-scheduler=on
$ sudo snap set edgexfoundry support-notifications=on

When we use Edgex UI work for streams, there is a problem of 502 Bad gateway. Because the Rest API of eKuiper in EdgeX uses port 59720 instead of the default 9081. So please change 9081 to 59720:

$ cd /var/snap/edgexfoundry/current/kuiper/etc
$ sudo nano kuiper.yaml

Chang: restPort: 9081
To: restPort: 59720

$ snap set edgexfoundry kuiper=on
$ sudo snap restart edgexfoundry.kuiper

Use edgex-ui:

Open this in your brower: http://localhost:4000
We should see this:

Other information

[badboy-huaqiao]

LGTM, next time please do rebase operation before submitting PR

[MonicaisHer]

LGTM, next time please do rebase operation before submitting PR

Thank you, I will do it next time.