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Setting up Go-NEB (optional)

The playbook can install and configure Go-NEB for you.

Go-NEB is a Matrix bot written in Go. It is the successor to Matrix-NEB, the original Matrix bot written in Python.

See the project's documentation to learn what it does and why it might be useful to you.

Registering the bot user

The playbook does not automatically create users for you. The bot requires at least 1 access token to be able to connect to your homeserver.

You need to register the bot user manually before setting up the bot.

Choose a strong password for the bot. You can generate a good password with a command like this: pwgen -s 64 1.

You can use the playbook to register a new user:

ansible-playbook -i inventory/hosts setup.yml --extra-vars='username=bot.go-neb password=PASSWORD_FOR_THE_BOT admin=no' --tags=register-user

Once the user is created you can obtain an access token.

Decide on a domain and path

By default, Go-NEB is configured to use its own dedicated domain (goneb.DOMAIN) and requires you to adjust your DNS records.

You can override the domain and path like this:

# Switch to the domain used for Matrix services (`matrix.DOMAIN`),
# so we won't need to add additional DNS records for Go-NEB.
matrix_bot_go_neb_hostname: "{{ matrix_server_fqn_matrix }}"

# Expose under the /go-neb subpath
matrix_bot_go_neb_path_prefix: /go-neb

NOTE: When using matrix-nginx-proxy instead of Traefik, you won't be able to override the path prefix. You can only override the domain, but that needs to happen using another variable: matrix_server_fqn_go_neb (e.g. matrix_server_fqn_go_neb: "mybot.{{ matrix_domain }}").

Adjusting DNS records

Once you've decided on the domain and path, you may need to adjust your DNS records to point the Go-NEB domain to the Matrix server.

If you've decided to reuse the matrix. domain, you won't need to do any extra DNS configuration.

Adjusting the playbook configuration

Add the following configuration to your inventory/host_vars/matrix.DOMAIN/vars.yml file (adapt to your needs):

matrix_bot_go_neb_enabled: true

# You need at least 1 client.
# Use the access token you obtained in the step above.
matrix_bot_go_neb_clients:
  - UserID: "@goneb:{{ matrix_domain }}"
    AccessToken: "MDASDASJDIASDJASDAFGFRGER"
    DeviceID: "DEVICE1"
    HomeserverURL: "{{ matrix_homeserver_container_url }}"
    Sync: true
    AutoJoinRooms: true
    DisplayName: "Go-NEB!"
    AcceptVerificationFromUsers: [":{{ matrix_domain }}"]

  - UserID: "@another_goneb:{{ matrix_domain }}"
    AccessToken: "MDASDASJDIASDJASDAFGFRGER"
    DeviceID: "DEVICE2"
    HomeserverURL: "{{ matrix_homeserver_container_url }}"
    Sync: false
    AutoJoinRooms: false
    DisplayName: "Go-NEB!"
    AcceptVerificationFromUsers: ["^@admin:{{ matrix_domain }}"]

# Optional, for use with the github_cmd, github_webhooks or jira services
matrix_bot_go_neb_realms:
  - ID: "github_realm"
    Type: "github"
    Config: {} # No need for client ID or Secret as Go-NEB isn't generating OAuth URLs

# Optional. The list of *authenticated* sessions which Go-NEB is aware of.
matrix_bot_go_neb_sessions:
  - SessionID: "your_github_session"
    RealmID: "github_realm"
    UserID: "@YOUR_USER_ID:{{ matrix_domain }}" # This needs to be the username of the person that's allowed to use the !github commands
    Config:
      # Populate these fields by generating a "Personal Access Token" on github.com
      AccessToken: "YOUR_GITHUB_ACCESS_TOKEN"
      Scopes: "admin:org_hook,admin:repo_hook,repo,user"

# The list of services which Go-NEB is aware of.
# Delete or modify this list as appropriate.
# See the docs for /configureService for the full list of options:
# https://matrix-org.github.io/go-neb/pkg/github.com/matrix-org/go-neb/api/index.html#ConfigureServiceRequest
# You need at least 1 service.
matrix_bot_go_neb_services:
  - ID: "echo_service"
    Type: "echo"
    UserID: "@goneb:{{ matrix_domain }}"
    Config: {}

# Can be obtained from https://developers.giphy.com/dashboard/
  - ID: "giphy_service"
    Type: "giphy"
    UserID: "@goneb:{{ matrix_domain }}" # requires a Syncing client
    Config:
      api_key: "qwg4672vsuyfsfe"
      use_downsized: false

# This service has been dead for over a year :/
  - ID: "guggy_service"
    Type: "guggy"
    UserID: "@goneb:{{ matrix_domain }}" # requires a Syncing client
    Config:
      api_key: "2356saaqfhgfe"

# API Key via https://developers.google.com/custom-search/v1/introduction
# CX via http://www.google.com/cse/manage/all
# https://stackoverflow.com/questions/6562125/getting-a-cx-id-for-custom-search-google-api-python
# 'Search the entire web' and 'Image search' enabled for best results
  - ID: "google_service"
    Type: "google"
    UserID: "@goneb:{{ matrix_domain }}" # requires a Syncing client
    Config:
      api_key: "AIzaSyA4FD39m9"
      cx: "AIASDFWSRRtrtr"

# Get a key via https://api.imgur.com/oauth2/addclient
# Select "oauth2 without callback url"
  - ID: "imgur_service"
    Type: "imgur"
    UserID: "@imgur:{{ matrix_domain }}" # requires a Syncing client
    Config:
      client_id: "AIzaSyA4FD39m9"
      client_secret: "somesecret"

  - ID: "wikipedia_service"
    Type: "wikipedia"
    UserID: "@goneb:{{ matrix_domain }}" # requires a Syncing client
    Config:

  - ID: "rss_service"
    Type: "rssbot"
    UserID: "@another_goneb:{{ matrix_domain }}"
    Config:
      feeds:
        "http://lorem-rss.herokuapp.com/feed?unit=second&interval=60":
          rooms: ["!qmElAGdFYCHoCJuaNt:{{ matrix_domain }}"]
          must_include:
            author:
              - author1
            description:
              - lorem
              - ipsum
          must_not_include:
            title:
              - Lorem
              - Ipsum

  - ID: "github_cmd_service"
    Type: "github"
    UserID: "@goneb:{{ matrix_domain }}" # requires a Syncing client
    Config:
      RealmID: "github_realm"

    # Make sure your BASE_URL can be accessed by Github!
  - ID: "github_webhook_service"
    Type: "github-webhook"
    UserID: "@another_goneb:{{ matrix_domain }}"
    Config:
      RealmID: "github_realm"
      ClientUserID: "@YOUR_USER_ID:{{ matrix_domain }}" # needs to be an authenticated user so Go-NEB can create webhooks. Check the UserID field in the github_realm in matrix_bot_go_neb_sessions.
      Rooms:
        "!someroom:id":
          Repos:
            "matrix-org/synapse":
              Events: ["push", "issues"]
            "matrix-org/dendron":
              Events: ["pull_request"]
        "!anotherroom:id":
          Repos:
            "matrix-org/synapse":
              Events: ["push", "issues"]
            "matrix-org/dendron":
              Events: ["pull_request"]

  - ID: "slackapi_service"
    Type: "slackapi"
    UserID: "@slackapi:{{ matrix_domain }}"
    Config:
      Hooks:
        "hook1":
          RoomID: "!someroom:id"
          MessageType: "m.text" # default is m.text

  - ID: "alertmanager_service"
    Type: "alertmanager"
    UserID: "@alertmanager:{{ matrix_domain }}"
    Config:
      # This is for information purposes only. It should point to Go-NEB path as follows:
      # `/services/hooks/<base64 encoded service ID>`
      # Where in this case "service ID" is "alertmanager_service"
      # Make sure your BASE_URL can be accessed by the Alertmanager instance!
      webhook_url: "http://localhost/services/hooks/YWxlcnRtYW5hZ2VyX3NlcnZpY2U"
      # Each room will get the notification with the alert rendered with the given template
      rooms:
        "!someroomid:domain.tld":
          text_template: "{% raw %}{{range .Alerts -}} [{{ .Status }}] {{index .Labels \"alertname\" }}: {{index .Annotations \"description\"}} {{ end -}}{% endraw %}"
          html_template: "{% raw %}{{range .Alerts -}}  {{ $severity := index .Labels \"severity\" }}    {{ if eq .Status \"firing\" }}      {{ if eq $severity \"critical\"}}        <font color='red'><b>[FIRING - CRITICAL]</b></font>      {{ else if eq $severity \"warning\"}}        <font color='orange'><b>[FIRING - WARNING]</b></font>      {{ else }}        <b>[FIRING - {{ $severity }}]</b>      {{ end }}    {{ else }}      <font color='green'><b>[RESOLVED]</b></font>    {{ end }}  {{ index .Labels \"alertname\"}} : {{ index .Annotations \"description\"}}   <a href=\"{{ .GeneratorURL }}\">source</a><br/>{{end -}}{% endraw %}"
          msg_type: "m.text"  # Must be either `m.text` or `m.notice`

Installing

After potentially adjusting DNS records and configuring the playbook, run the installation command again:

ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,start

Usage

To use the bot, invite it to any existing Matrix room (/invite @whatever_you_chose:DOMAIN where YOUR_DOMAIN is your base domain, not the matrix. domain, make sure you have permission from the room owner if that's not you).

Basic usage is like this: !echo hi or !imgur puppies or !giphy matrix

If you enabled the github_cmd service you can get the supported commands via !github help

You can also refer to the upstream Documentation.

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