oraclecloud-webhooks-events

Wire up event-driven workflows with OCI Events, Notifications, and Functions. Use when building serverless event processing, subscribing to instance lifecycle changes, or routing audit events to alerting systems. Trigger with "oraclecloud webhooks events", "oci events rules", "oci notifications", "oci ons topics".

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name	oraclecloud-webhooks-events
description	Wire up event-driven workflows with OCI Events, Notifications, and Functions. Use when building serverless event processing, subscribing to instance lifecycle changes, or routing audit events to alerting systems. Trigger with "oraclecloud webhooks events", "oci events rules", "oci notifications", "oci ons topics".
allowed-tools	Read, Write, Edit, Bash(pip:), Bash(oci:), Grep
version	1.7.0
license	MIT
author	Jeremy Longshore <jeremy@intentsolutions.io>
tags	["saas","oraclecloud","oci"]
compatibility	Designed for Claude Code

Oracle Cloud Webhooks & Events

Overview

Build event-driven workflows using the OCI Events service, Oracle Notification Service (ONS), and OCI Functions. OCI Events monitors resource state changes across your tenancy and fires rules that route events to ONS topics, streaming, or Functions. This skill covers event rule creation, ONS topic/subscription setup, event pattern matching syntax, and Functions integration.

Purpose: Create reliable event-driven pipelines that react to OCI resource changes in real time.

Prerequisites

OCI Python SDK — pip install oci
OCI config file at ~/.oci/config with valid credentials (user, fingerprint, tenancy, region, key_file)
IAM policies granting access to Events, ONS, and Functions:
- Allow group EventAdmins to manage cloudevents-rules in compartment <name>
- Allow group EventAdmins to manage ons-topics in compartment <name>
- Allow group EventAdmins to use fn-function in compartment <name>
Compartment OCID for the target compartment
Python 3.8+

Instructions

Step 1: Create an ONS Topic and Subscription

Create a notification topic that will receive events, then subscribe an endpoint (email, HTTPS, PagerDuty, or Slack via HTTPS):

import oci

config = oci.config.from_file("~/.oci/config")
ons_control = oci.ons.NotificationControlPlaneClient(config)
ons_data = oci.ons.NotificationDataPlaneClient(config)

# Create a topic
topic_response = ons_control.create_topic(
    oci.ons.models.CreateTopicDetails(
        name="infra-alerts",
        compartment_id="ocid1.compartment.oc1..example",
        description="Infrastructure lifecycle alerts"
    )
)
topic_id = topic_response.data.topic_id
print(f"Topic created: {topic_id}")

# Subscribe an HTTPS endpoint (e.g., Slack incoming webhook)
subscription = ons_data.create_subscription(
    oci.ons.models.CreateSubscriptionDetails(
        topic_id=topic_id,
        compartment_id="ocid1.compartment.oc1..example",
        protocol="HTTPS",
        endpoint=
    )
)
()

events_client = oci.events.EventsClient(config)

rule = events_client.create_rule(
    oci.events.models.CreateRuleDetails(
        display_name="instance-state-changes",
        compartment_id="ocid1.compartment.oc1..example",
        description="Fire on compute instance lifecycle changes",
        is_enabled=True,
        condition='{"eventType":["com.oraclecloud.computeapi.launchinstance.end","com.oraclecloud.computeapi.terminateinstance.end","com.oraclecloud.computeapi.instanceaction.end"]}',
        actions=oci.events.models.ActionDetailsList(
            actions=[
                oci.events.models.ActionDetails(
                    action_type="ONS",
                    topic_id=topic_id,
                    is_enabled=True,
                    description="Notify infra-alerts topic"
                )
            ]
        )
    )
)
print(f"Rule created: {rule.data.id}")

Category	Event Type	Fires When
Compute	`com.oraclecloud.computeapi.launchinstance.end`	Instance launch completes
Compute	`com.oraclecloud.computeapi.terminateinstance.end`	Instance terminated
Compute	`com.oraclecloud.computeapi.instanceaction.end`	Stop/start/reboot finishes
Storage	`com.oraclecloud.objectstorage.createbucket`	New bucket created
Storage	`com.oraclecloud.objectstorage.deleteobject`	Object deleted
Identity	`com.oraclecloud.identitycontrolplane.createuser`	New user created
Identity	`com.oraclecloud.identitycontrolplane.updatepolicy`	IAM policy modified
Audit	`com.oraclecloud.audit.event`	Any auditable action

# Create a rule that invokes a Function
fn_rule = events_client.create_rule(
    oci.events.models.CreateRuleDetails(
        display_name="bucket-change-processor",
        compartment_id="ocid1.compartment.oc1..example",
        is_enabled=True,
        condition='{"eventType":["com.oraclecloud.objectstorage.createobject","com.oraclecloud.objectstorage.deleteobject"]}',
        actions=oci.events.models.ActionDetailsList(
            actions=[
                oci.events.models.ActionDetails(
                    action_type="FAAS",
                    function_id="ocid1.fnfunc.oc1.iad.example",
                    is_enabled=True,
                    description="Process bucket changes"
                )
            ]
        )
    )
)

# List event rules via CLI
oci events rule list --compartment-id ocid1.compartment.oc1..example --all

# Check ONS subscription confirmation status
oci ons subscription list --compartment-id ocid1.compartment.oc1..example --topic-id <topic-ocid>

Error	Code	Cause	Solution
NotAuthenticated	401	Bad config or API key	Verify `~/.oci/config` credentials and key_file path
NotAuthorizedOrNotFound	404	Missing IAM policy or wrong OCID	Add `manage cloudevents-rules` / `manage ons-topics` policies
TooManyRequests	429	Rate limited (no Retry-After header)	Back off exponentially; see `oraclecloud-rate-limits`
InvalidParameter	400	Malformed condition JSON in rule	Validate JSON syntax — condition must be valid JSON, not HCL
TopicLimitReached	400	ONS topic limit (max 100 per compartment)	Delete unused topics or request a limit increase
InternalError	500	OCI service error	Retry after 30 seconds; check https://ocistatus.oraclecloud.com
SubscriptionPending	—	HTTPS endpoint did not confirm	Check endpoint logs — OCI sends a confirmation POST that must return 200

# Create a rule that fires on all audit events in a compartment
oci events rule create \
  --compartment-id ocid1.compartment.oc1..example \
  --display-name "audit-all" \
  --is-enabled true \
  --condition '{"eventType":["com.oraclecloud.audit.event"]}' \
  --actions '{"actions":[{"actionType":"ONS","topicId":"ocid1.onstopic.oc1.iad.example","isEnabled":true}]}'

import oci

config = oci.config.from_file("~/.oci/config")
events_client = oci.events.EventsClient(config)

# Event types are documented — no list API exists.
# Reference: https://docs.oracle.com/en-us/iaas/Content/Events/Reference/eventsproducers.htm