Update for new plugin interface. Add Notify plugin

This patch adds the notify plugin to be used with the new
notification plugins interface for aprsd.  This sends a notification
to a slack channel when a HAM callsign is seen on the APRS-IS network
after a specified timeout/age.

aprsd_slack_plugin/base_plugin.py

@@ -1,6 +1,5 @@
 import logging
 
-from aprsd import plugin
 from aprsd import utils as aprsd_utils
 from slack_sdk import WebClient
 
@@ -9,7 +8,7 @@ import aprsd_slack_plugin
 LOG = logging.getLogger("APRSD")
 
 
-class SlackPluginBase(plugin.APRSDPluginBase):
+class SlackPluginBase:
     """SlackCommandPlugin.
 
     This APRSD plugin looks for the location command comming in

aprsd_slack_plugin/location_plugin.py

@@ -48,9 +48,12 @@ class SlackLocationPlugin(base_plugin.SlackPluginBase):
     command_regex = "^[lL]"
     command_name = "location-slack"
 
-    def command(self, fromcall, message, ack):
+    def command(self, packet):
         LOG.info("SlackCommandPlugin")
 
+        fromcall = packet["from"]
+        message = packet["message_text"]
+
         is_setup = self.setup_slack()
         if not is_setup:
             return

aprsd_slack_plugin/notify_plugin.py

@@ -0,0 +1,76 @@
+import logging
+
+from aprsd import messaging, plugin
+
+import aprsd_slack_plugin
+from aprsd_slack_plugin import base_plugin
+
+LOG = logging.getLogger("APRSD")
+
+
+class SlackNotifyPlugin(
+    base_plugin.SlackPluginBase,
+    plugin.APRSDNotificationPluginBase,
+):
+    """SlackCommandPlugin.
+
+    This APRSD plugin looks for the location command comming in
+    to aprsd, then fetches the caller's location, and then reports
+    that location string to the configured slack channel.
+
+    To use this:
+        Create a slack bot for your workspace at api.slack.com.
+        A good source of information on how to create the app
+        and the tokens and permissions and install the app in your
+        workspace is here:
+
+            https://api.slack.com/start/building/bolt-python
+
+
+        You will need the signing secret from the
+        Basic Information -> App Credentials form.
+        You will also need the Bot User OAuth Access Token from
+        OAuth & Permissions -> OAuth Tokens for Your Team ->
+        Bot User OAuth Access Token.
+
+        Install the app/bot into your workspace.
+
+        Edit your ~/.config/aprsd/aprsd.yml and add the section
+        slack:
+            signing_secret: <signing secret token here>
+            bot_token: <Bot User OAuth Access Token here>
+            channel: <channel name here>
+    """
+
+    version = aprsd_slack_plugin.__version__
+
+    def notify(self, packet):
+        LOG.info("SlackCommandPlugin")
+
+        fromcall = packet["from"]
+        # message = packet["message_text"]
+
+        is_setup = self.setup_slack()
+        if not is_setup:
+            return
+
+        # get last location of a callsign, get descriptive name from weather service
+
+        callsign_url = "<http://aprs.fi/info/a/{}|{}>".format(fromcall, fromcall)
+
+        message = {}
+        message["username"] = "APRSD - Slack Notification Plugin"
+        message["icon_emoji"] = ":satellite_antenna:"
+        message["attachments"] = [{}]
+        message["text"] = "{} - Is now on APRS".format(callsign_url)
+        message["channel"] = "#hemna"
+
+        LOG.debug(message)
+
+        # self.swc.chat_postMessage(**message)
+        for channel in self.slack_channels:
+            message["channel"] = channel
+            self.swc.chat_postMessage(**message)
+
+        # Don't have aprsd try and send a reply
+        return messaging.NULL_MESSAGE