Collect Harness IO audit logs

Supported in:

Google secops SIEM

This document explains how to ingest Harness IO audit logs to Google Security Operations using Google Cloud Storage. Harness is a continuous delivery and DevOps platform that provides tools for software delivery, feature flags, cloud cost management, and security testing.

Before you begin

Make sure you have the following prerequisites:

A Google SecOps instance
A GCP project with Cloud Storage API enabled
Permissions to create and manage GCS buckets
Permissions to manage IAM policies on GCS buckets
Permissions to create Cloud Run services, Pub/Sub topics, and Cloud Scheduler jobs
Privileged access to Harness with permissions to:
- Create API keys
- Access audit logs
- View account settings

Collect Harness API credentials

Create API key in Harness

Sign in to the Harness Platform.
Click your User Profile.
Go to My API Keys.
Click + API Key.
Provide the following configuration details:
- Name: Enter a descriptive name (for example, Google SecOps Integration).
- Description: Optional description.
Click Save.
Click + Token to create a new token.
Provide the following configuration details:
- Name: Enter Chronicle Feed Token.
- Set Expiration: Select an appropriate expiration time or No Expiration (for production use).
Click Generate Token.
Copy and save the token value securely. This token will be used as the x-api-key header value.

Note: The token is displayed only once. If you lose it, you'll need to generate a new token.
Note: The API token must have the core_audit_view permission to access audit logs. This permission is typically granted through role assignments in Harness.

Get Harness Account ID

In the Harness Platform, note the Account ID from the URL.

Example URL: https://app.harness.io/ng/account/YOUR_ACCOUNT_ID/.... The YOUR_ACCOUNT_ID part is your Account Identifier.

Alternatively, go to Account Settings > Overview to view your Account Identifier.

Copy and save the Account ID for use in the Cloud Run function.

Note: The Account ID is required for all API requests to Harness.

Create Google Cloud Storage bucket

Go to the Google Cloud Console.
Select your project or create a new one.
In the navigation menu, go to Cloud Storage > Buckets.
Click Create bucket.

Provide the following configuration details:

Setting	Value
Name your bucket	Enter a globally unique name (for example, `harness-io-logs`)
Location type	Choose based on your needs (Region, Dual-region, Multi-region)
Location	Select the location (for example, `us-central1`)
Storage class	Standard (recommended for frequently accessed logs)
Access control	Uniform (recommended)
Protection tools	Optional: Enable object versioning or retention policy

Click Create.

Create service account for Cloud Run function

The Cloud Run function needs a service account with permissions to write to GCS bucket and be invoked by Pub/Sub.

Create service account

In the GCP Console, go to IAM & Admin > Service Accounts.
Click Create Service Account.
Provide the following configuration details:
- Service account name: Enter harness-audit-collector-sa.
- Service account description: Enter Service account for Cloud Run function to collect Harness IO audit logs.
Click Create and Continue.
In the Grant this service account access to project section, add the following roles:
1. Click Select a role.
2. Search for and select Storage Object Admin.
3. Click + Add another role.
4. Search for and select Cloud Run Invoker.
5. Click + Add another role.
6. Search for and select Cloud Functions Invoker.
Click Continue.
Click Done.

These roles are required for:

Storage Object Admin: Write logs to GCS bucket and manage state files
Cloud Run Invoker: Allow Pub/Sub to invoke the function
Cloud Functions Invoker: Allow function invocation

Grant IAM permissions on GCS bucket

Grant the service account write permissions on the GCS bucket:

Go to Cloud Storage > Buckets.
Click your bucket name.
Go to the Permissions tab.
Click Grant access.
Provide the following configuration details:
- Add principals: Enter the service account email (for example, harness-audit-collector-sa@PROJECT_ID.iam.gserviceaccount.com).
- Assign roles: Select Storage Object Admin.
Click Save.

Create Pub/Sub topic

Create a Pub/Sub topic that Cloud Scheduler will publish to and the Cloud Run function will subscribe to.

In the GCP Console, go to Pub/Sub > Topics.
Click Create topic.
Provide the following configuration details:
- Topic ID: Enter harness-audit-trigger.
- Leave other settings as default.
Click Create.

Create Cloud Run function to collect logs

The Cloud Run function is triggered by Pub/Sub messages from Cloud Scheduler to fetch logs from Harness API and writes them to GCS.

In the GCP Console, go to Cloud Run.
Click Create service.
Select Function (use an inline editor to create a function).
In the Configure section, provide the following configuration details:

Setting Value

Service name harness-audit-collector

Region Select region matching your GCS bucket (for example, us-central1)

Runtime Select Python 3.12 or later
In the Trigger (optional) section:
1. Click + Add trigger.
2. Select Cloud Pub/Sub.
3. In Select a Cloud Pub/Sub topic, choose the Pub/Sub topic (harness-audit-trigger).
4. Click Save.
In the Authentication section:
1. Select Require authentication.
2. Check Identity and Access Management (IAM).
Note: Pub/Sub automatically handles authentication when invoking the function.
Scroll down and expand Containers, Networking, Security.
Go to the Security tab:
- Service account: Select the service account (harness-audit-collector-sa).

Setting	Value
Service name	`harness-audit-collector`
Region	Select region matching your GCS bucket (for example, `us-central1`)
Runtime	Select Python 3.12 or later

Go to the Containers tab:

Click Variables & Secrets.
Click + Add variable for each environment variable:

Variable Name	Example Value	Description
`HARNESS_ACCOUNT_ID`	Your Harness Account ID	Account identifier from Harness
`HARNESS_API_KEY`	Your API key token	Token with audit:read permissions
`GCS_BUCKET`	`harness-io-logs`	GCS bucket name
`GCS_PREFIX`	`harness/audit`	Prefix for GCS objects
`STATE_KEY`	`harness/audit/state.json`	State file path in GCS

Optional environment variables:

Variable Name	Default Value	Description
`HARNESS_API_BASE`	`https://app.harness.io`	Harness API base URL (override for self-hosted instances)
`PAGE_SIZE`	`50`	Events per page (max 100)
`START_MINUTES_BACK`	`60`	Initial lookback period in minutes
`FILTER_MODULES`	None	Comma-separated modules (e.g., `CD,CI,CE`)
`FILTER_ACTIONS`	None	Comma-separated actions (e.g., `CREATE,UPDATE,DELETE`)
`STATIC_FILTER`	None	Pre-defined filter: `EXCLUDE_LOGIN_EVENTS` or `EXCLUDE_SYSTEM_EVENTS`
`MAX_RETRIES`	`3`	Max retry attempts for rate limiting

Scroll down in the Variables & Secrets tab to Requests:
- Request timeout: Enter 600 seconds (10 minutes).
Go to the Settings tab in Containers:
- In the Resources section:
  - Memory: Select 512 MiB or higher.
  - CPU: Select 1.
- Click Done.
Scroll to Execution environment:
- Select Default (recommended).
In the Revision scaling section:
- Minimum number of instances: Enter 0.
- Maximum number of instances: Enter 100 (or adjust based on expected load).
Click Create.
Wait for the service to be created (1-2 minutes).
After the service is created, the inline code editor opens automatically.

Add function code

Enter main in Function entry point

In the inline code editor, create two files:

First file: main.py:

import functions_framework
from google.cloud import storage
import json
import os
import urllib3
from datetime import datetime, timedelta, timezone
import time

# Initialize HTTP client
http = urllib3.PoolManager()

# Initialize Storage client
storage_client = storage.Client()

# Configuration from Environment Variables
API_BASE = os.environ.get("HARNESS_API_BASE", "https://app.harness.io").rstrip("/")
ACCOUNT_ID = os.environ["HARNESS_ACCOUNT_ID"]
API_KEY = os.environ["HARNESS_API_KEY"]
BUCKET = os.environ["GCS_BUCKET"]
PREFIX = os.environ.get("GCS_PREFIX", "harness/audit").strip("/")
STATE_KEY = os.environ.get("STATE_KEY", "harness/audit/state.json")
PAGE_SIZE = min(int(os.environ.get("PAGE_SIZE", "50")), 100)
START_MINUTES_BACK = int(os.environ.get("START_MINUTES_BACK", "60"))

# Optional filters
FILTER_MODULES = os.environ.get("FILTER_MODULES", "").split(",") if os.environ.get("FILTER_MODULES") else None
FILTER_ACTIONS = os.environ.get("FILTER_ACTIONS", "").split(",") if os.environ.get("FILTER_ACTIONS") else None
STATIC_FILTER = os.environ.get("STATIC_FILTER")
MAX_RETRIES = int(os.environ.get("MAX_RETRIES", "3"))

# HTTP headers for Harness API
HDRS = {
    "x-api-key": API_KEY,
    "Content-Type": "application/json",
    "Accept": "application/json",
}

def read_state(bucket):
    """Read checkpoint state from GCS."""
    try:
        blob = bucket.blob(STATE_KEY)
        if blob.exists():
            state_data = blob.download_as_text()
            state = json.loads(state_data)
            since_ms = state.get("since")
            page_token = state.get("pageToken")
            print(f"State loaded: since={since_ms}, pageToken={page_token}")
            return since_ms, page_token
    except Exception as e:
        print(f"Warning: Could not load state: {e}")

    print("No state file found, starting fresh collection")
    start_time = datetime.now(timezone.utc) - timedelta(minutes=START_MINUTES_BACK)
    since_ms = int(start_time.timestamp() * 1000)
    print(f"Initial since timestamp: {since_ms} ({start_time.isoformat()})")
    return since_ms, None

def write_state(bucket, since_ms, page_token=None):
    """Write checkpoint state to GCS."""
    state = {
        "since": since_ms,
        "pageToken": page_token,
        "lastRun": int(time.time() * 1000),
        "lastRunISO": datetime.now(timezone.utc).isoformat()
    }
    try:
        blob = bucket.blob(STATE_KEY)
        blob.upload_from_string(
            json.dumps(state, indent=2),
            content_type="application/json"
        )
        print(f"State saved: since={since_ms}, pageToken={page_token}")
    except Exception as e:
        print(f"Error writing state: {e}")
        raise

def fetch_harness_audits(since_ms, page_token=None, retry_count=0):
    """
    Fetch audit logs from Harness API with retry logic.
    API Endpoint: POST /audit/api/audits/listV2
    """
    try:
        # Build URL with query parameters
        url = (
            f"{API_BASE}/audit/api/audits/listV2"
            f"?accountIdentifier={ACCOUNT_ID}"
            f"&pageSize={PAGE_SIZE}"
        )
        if page_token:
            url += f"&pageToken={page_token}"

        print(f"Fetching from: {url[:100]}...")

        # Build request body with time filter and optional filters
        body_data = {
            "startTime": since_ms,
            "endTime": int(time.time() * 1000),
            "filterType": "Audit"
        }

        if FILTER_MODULES:
            body_data["modules"] = [m.strip() for m in FILTER_MODULES if m.strip()]
            print(f"Applying module filter: {body_data['modules']}")

        if FILTER_ACTIONS:
            body_data["actions"] = [a.strip() for a in FILTER_ACTIONS if a.strip()]
            print(f"Applying action filter: {body_data['actions']}")

        if STATIC_FILTER:
            body_data["staticFilter"] = STATIC_FILTER
            print(f"Applying static filter: {STATIC_FILTER}")

        # Make POST request
        response = http.request(
            'POST',
            url,
            body=json.dumps(body_data).encode('utf-8'),
            headers=HDRS,
            timeout=30.0
        )

        resp_data = json.loads(response.data.decode('utf-8'))

        if "status" not in resp_data:
            print(f"Response missing 'status' field: {response.data[:200]}")

        # Check response status
        if resp_data.get("status") != "SUCCESS":
            error_msg = resp_data.get("message", "Unknown error")
            raise Exception(f"API returned status: {resp_data.get('status')} - {error_msg}")

        # Extract data from response structure
        data_obj = resp_data.get("data", {})
        if not data_obj:
            print("Response 'data' object is empty or missing")

        events = data_obj.get("content", [])
        has_next = data_obj.get("hasNext", False)
        next_token = data_obj.get("pageToken")

        print(f"API response: {len(events)} events, hasNext={has_next}, pageToken={next_token}")

        if not events and data_obj:
            print(f"Empty events but data present. Data keys: {list(data_obj.keys())}")

        return {
            "events": events,
            "hasNext": has_next,
            "pageToken": next_token
        }

    except Exception as e:
        if hasattr(e, 'status') and e.status == 429:
            retry_after = 60
            print(f"Rate limit exceeded. Retry after {retry_after} seconds (attempt {retry_count + 1}/{MAX_RETRIES})")
            if retry_count < MAX_RETRIES:
                print(f"Waiting {retry_after} seconds before retry...")
                time.sleep(retry_after)
                print(f"Retrying request (attempt {retry_count + 2}/{MAX_RETRIES})")
                return fetch_harness_audits(since_ms, page_token, retry_count + 1)
            else:
                raise Exception(f"Max retries ({MAX_RETRIES}) exceeded for rate limiting")
        print(f"Error in fetch_harness_audits: {e}")
        raise

def upload_to_gcs(bucket, events):
    """Upload audit events to GCS in JSONL format."""
    if not events:
        print("No events to upload")
        return None

    try:
        # Create JSONL content (one JSON object per line)
        jsonl_lines = [json.dumps(event) for event in events]
        jsonl_content = "\n".join(jsonl_lines)

        # Generate GCS key with timestamp
        timestamp = datetime.now(timezone.utc)
        key = (
            f"{PREFIX}/"
            f"{timestamp:%Y/%m/%d}/"
            f"harness-audit-{timestamp:%Y%m%d-%H%M%S}.jsonl"
        )

        # Upload to GCS
        blob = bucket.blob(key)
        blob.upload_from_string(
            jsonl_content,
            content_type="application/x-ndjson"
        )
        blob.metadata = {
            "event-count": str(len(events)),
            "source": "harness-audit-function",
            "collection-time": timestamp.isoformat()
        }
        blob.patch()

        print(f"Uploaded {len(events)} events to gs://{BUCKET}/{key}")
        return key

    except Exception as e:
        print(f"Error uploading to GCS: {e}")
        raise

@functions_framework.cloud_event
def main(cloud_event):
    """
    Cloud Run function triggered by Pub/Sub to fetch Harness audit logs and write to GCS.

    Args:
        cloud_event: CloudEvent object containing Pub/Sub message
    """
    print("=== Harness Audit Collection Started ===")
    print(f"Configuration: API_BASE={API_BASE}, ACCOUNT_ID={ACCOUNT_ID[:8]}..., PAGE_SIZE={PAGE_SIZE}")

    if FILTER_MODULES:
        print(f"Module filter enabled: {FILTER_MODULES}")
    if FILTER_ACTIONS:
        print(f"Action filter enabled: {FILTER_ACTIONS}")
    if STATIC_FILTER:
        print(f"Static filter enabled: {STATIC_FILTER}")

    try:
        # Get GCS bucket
        bucket = storage_client.bucket(BUCKET)

        # Step 1: Read checkpoint state
        since_ms, page_token = read_state(bucket)

        if page_token:
            print("Resuming pagination from saved pageToken")
        else:
            since_dt = datetime.fromtimestamp(since_ms / 1000, tz=timezone.utc)
            print(f"Starting new collection from: {since_dt.isoformat()}")

        # Step 2: Collect all events with pagination
        all_events = []
        current_page_token = page_token
        page_count = 0
        max_pages = 100
        has_next = True

        while has_next and page_count < max_pages:
            page_count += 1
            print(f"--- Fetching page {page_count} ---")

            # Fetch one page of results
            result = fetch_harness_audits(since_ms, current_page_token)

            # Extract events
            events = result.get("events", [])
            all_events.extend(events)
            print(f"Page {page_count}: {len(events)} events (total: {len(all_events)})")

            # Check pagination status
            has_next = result.get("hasNext", False)
            current_page_token = result.get("pageToken")

            if not has_next:
                print("Pagination complete (hasNext=False)")
                break

            if not current_page_token:
                print("hasNext=True but no pageToken, stopping pagination")
                break

            # Small delay between pages to avoid rate limiting
            time.sleep(0.5)

        if page_count >= max_pages:
            print(f"Reached max pages limit ({max_pages}), stopping")

        # Step 3: Upload collected events to GCS
        if all_events:
            gcs_key = upload_to_gcs(bucket, all_events)
            print(f"Successfully uploaded {len(all_events)} total events")
        else:
            print("No new events to upload")
            gcs_key = None

        # Step 4: Update checkpoint state
        if not has_next:
            # Pagination complete - update since to current time for next run
            new_since = int(time.time() * 1000)
            write_state(bucket, new_since, None)
            print(f"Pagination complete, state updated with new since={new_since}")
        else:
            # Pagination incomplete - save pageToken for continuation
            write_state(bucket, since_ms, current_page_token)
            print("Pagination incomplete, saved pageToken for next run")

        # Step 5: Log result
        result = {
            "status": "Success",
            "eventsCollected": len(all_events),
            "pagesProcessed": page_count,
            "paginationComplete": not has_next,
            "gcsKey": gcs_key,
            "filters": {
                "modules": FILTER_MODULES,
                "actions": FILTER_ACTIONS,
                "staticFilter": STATIC_FILTER
            }
        }
        print(f"Collection completed: {json.dumps(result)}")

    except Exception as e:
        print(f"Collection failed: {e}")
        raise
    finally:
        print("=== Harness Audit Collection Finished ===")

Second file: requirements.txt:

functions-framework==3.*
google-cloud-storage==2.*
urllib3>=2.0.0

Click Deploy to save and deploy the function.
Wait for deployment to complete (2-3 minutes).

Note: The Pub/Sub trigger configuration automatically creates the necessary subscriptions and permissions.

Create Cloud Scheduler job

Cloud Scheduler publishes messages to the Pub/Sub topic at regular intervals, triggering the Cloud Run function.

In the GCP Console, go to Cloud Scheduler.
Click Create Job.

Provide the following configuration details:

Setting	Value
Name	`harness-audit-hourly`
Region	Select same region as Cloud Run function
Frequency	`0 * * * *` (every hour, on the hour)
Timezone	Select timezone (UTC recommended)
Target type	Pub/Sub
Topic	Select the Pub/Sub topic (`harness-audit-trigger`)
Message body	`{}` (empty JSON object)

Click Create.

Schedule frequency options

Choose frequency based on log volume and latency requirements:

Frequency	Cron Expression	Use Case
Every 5 minutes	`/5 * * *`	High-volume, low-latency
Every 15 minutes	`/15 * * *`	Medium volume
Every hour	`0 * * * *`	Standard (recommended)
Every 6 hours	`0 /6 * *`	Low volume, batch processing
Daily	`0 0 * * *`	Historical data collection

Test the integration

In the Cloud Scheduler console, find your job.
Click Force run to trigger the job manually.
Wait a few seconds.
Go to Cloud Run > Services.
Click on your function name (harness-audit-collector).
Click the Logs tab.

Verify the function executed successfully. Look for the following:

=== Harness Audit Collection Started ===
State loaded: since=... or No state file found, starting fresh collection
--- Fetching page 1 ---
API response: X events, hasNext=...
Uploaded X events to gs://harness-io-logs/harness/audit/...
Successfully processed X records
=== Harness Audit Collection Finished ===

Go to Cloud Storage > Buckets.
Click your bucket name.
Navigate to the prefix folder (harness/audit/).
Verify that a new .jsonl file was created with the current timestamp.

If you see errors in the logs:

HTTP 401: Check API credentials in environment variables
HTTP 403: Verify account has required permissions
HTTP 429: Rate limiting - function will automatically retry with backoff
Missing environment variables: Check all required variables are set

Note: The Cloud Run function will now execute automatically every hour to collect new audit logs.

Retrieve the Google SecOps service account

Google SecOps uses a unique service account to read data from your GCS bucket. You must grant this service account access to your bucket.

Get the service account email

Go to SIEM Settings > Feeds.
Click Add New Feed.
Click Configure a single feed.
In the Feed name field, enter a name for the feed (for example, Harness Audit Logs).
Select Google Cloud Storage V2 as the Source type.
Select Harness IO as the Log type.
Click Get Service Account. A unique service account email is displayed, for example:
```
chronicle-12345678@chronicle-gcp-prod.iam.gserviceaccount.com
```
Copy this email address for use in the next step.

Note: Each Google SecOps instance has a unique service account. Do not use service accounts from other documentation or examples.

Grant IAM permissions to the Google SecOps service account

The Google SecOps service account needs Storage Object Viewer role on your GCS bucket.

Go to Cloud Storage > Buckets.
Click your bucket name.
Go to the Permissions tab.
Click Grant access.
Provide the following configuration details:
- Add principals: Paste the Google SecOps service account email.
- Assign roles: Select Storage Object Viewer.
Click Save.

Note: If you plan to use the deletion option "Delete transferred files" or "Delete transferred files and empty directories," grant Storage Object Admin role instead of Storage Object Viewer.

Configure a feed in Google SecOps to ingest Harness IO logs

Go to SIEM Settings > Feeds.
Click Add New Feed.
Click Configure a single feed.
In the Feed name field, enter a name for the feed (for example, Harness Audit Logs).
Select Google Cloud Storage V2 as the Source type.
Select Harness IO as the Log type.
Click Next.
Specify values for the following input parameters:
- Storage bucket URL: Enter the GCS bucket URI with the prefix path:
```
gs://harness-io-logs/harness/audit/
```
  - Replace:
    - harness-io-logs: Your GCS bucket name.
    - harness/audit: Prefix/folder path where logs are stored.
  - Examples:
    - Root bucket: gs://company-logs/
    - With prefix: gs://company-logs/harness-logs/
    - With subfolder: gs://company-logs/harness/audit/
Note: Always include the trailing slash (/) at the end of the URI.
- Source deletion option: Select the deletion option according to your preference:
  - Never: Never deletes any files after transfers (recommended for testing).
  - Delete transferred files: Deletes files after successful transfer.
  - Delete transferred files and empty directories: Deletes files and empty directories after successful transfer.
    
    Note: If you select a deletion option, the service account must have Storage Object Admin role instead of Storage Object Viewer. Update IAM permissions accordingly.
- Maximum File Age: Include files modified in the last number of days. Default is 180 days.
- Asset namespace: The asset namespace. Enter harness.audit.
- Ingestion labels: The label to be applied to the events from this feed.
Click Next.
Review your new feed configuration in the Finalize screen, and then click Submit.

Need more help? Get answers from Community members and Google SecOps professionals.