Configurable Slack Ephemeral Messages

README.md

@@ -107,6 +107,7 @@ Follow [these instructions](./docs/slack_app_create.md) to create a new Slack Ap
 | `INCIDENT_CHANNEL_ID`  | When an incident is declared, a 'headline' post is sent to a central channel.<br /><br />See the [demo app settings](./demo/demo/settings/dev.py) for an example of how to get the incident channel ID from the Slack API. |
 | `INCIDENT_BOT_ID`  | We want to invite the Bot to all Incident Channels, so need to know its ID.<br /><br />See the [demo app settings](./demo/demo/settings/dev.py) for an example of how to get the bot ID from the Slack API. |
 | `SLACK_CLIENT`  | Response needs a shared global instance of a Slack Client to talk to the Slack API. Typically this does not require any additional configuration. <br /><pre>from response.slack.client import SlackClient<br />SLACK_CLIENT = SlackClient(SLACK_TOKEN)</pre> |
+|`SLACK_EPHEMERAL_RESPONSES` | JSON formatted list of command names to which the Slack response should be sent as an [Ephemeral Message](https://api.slack.com/messaging/managing#ephemeral). All aliases for a single command need to be added to this list.
 
 ## 3. Running the server
 

demo/demo/settings/prod.py

@@ -1,3 +1,4 @@
+import json
 import os
 
 from .base import *  # noqa: F401, F403
@@ -47,6 +48,8 @@
 
 SLACK_TOKEN = get_env_var("SLACK_TOKEN")
 SLACK_SIGNING_SECRET = get_env_var("SLACK_SIGNING_SECRET")
+SLACK_EPHEMERAL_RESPONSES = json.loads(os.getenv("SLACK_EPHEMERAL_RESPONSES",
+                                                 "[]"))
 INCIDENT_CHANNEL_NAME = get_env_var("INCIDENT_CHANNEL_NAME")
 INCIDENT_REPORT_CHANNEL_NAME = get_env_var("INCIDENT_REPORT_CHANNEL_NAME")
 INCIDENT_BOT_NAME = get_env_var("INCIDENT_BOT_NAME")

response/slack/decorators/incident_command.py

@@ -126,7 +126,14 @@ def handle_incident_command(command_name, message, thread_ts, channel_id, user_i
             react_not_ok(channel_id, thread_ts)
 
         if response:
-            settings.SLACK_CLIENT.send_message(comms_channel.channel_id, response)
+            if command_name in settings.SLACK_EPHEMERAL_RESPONSES:
+                settings.SLACK_CLIENT.send_ephemeral_message(
+                    channel_id,
+                    user_id,
+                    response
+                )
+            else:
+                settings.SLACK_CLIENT.send_message(comms_channel.channel_id, response)
 
     except CommsChannel.DoesNotExist:
         logger.error("No matching incident found for this channel")