feat: blueprint for errorLogs function (#18)

* feat: blueprint for errorLogs function

* Apply suggestions from code review

---------

Co-authored-by: Will Russell <[email protected]>

error-logs.yaml

@@ -0,0 +1,34 @@
+id: error-logs
+namespace: company.team
+
+tasks:
+  - id: fail
+    type: io.kestra.plugin.core.execution.Fail
+    errorMessage: Something went wrong, make sure to fix it asap!
+
+errors:
+  - id: slack
+    type: io.kestra.plugin.notifications.slack.SlackIncomingWebhook
+    url: "{{ secret('SLACK_WEBHOOK') }}"
+    payload: |
+      {
+        "text": "Failure alert for flow `{{ flow.namespace }}.{{ flow.id }}` with ID `{{ execution.id }}`. Here is a bit more context about why the execution failed: `{{ errorLogs()[0]['message'] }}`"
+      }
+
+extend:
+  title: Using errorLogs function to send error message to Slack
+  description: >-
+    This `fail` task of the workflow will always fail.
+
+    The error logs are captured using the `errorLogs()` function which is sent
+    as a Slack alert message.
+
+    The `errorLogs()` function retrieves a list of error logs from the failed task run. 
+    This is useful when sending alerts on failure. When using this function e.g. in a 
+    Slack alert message, you'll have the context about why the execution failed.
+  tags:
+    - Error
+    - Fail
+  ee: false
+  demo: false
+  meta_description: This workflow uses errorLogs function to retrive list of error logs.