Add SNMP polling tasks and monitoring API endpoints #53
Conversation
WalkthroughA new SNMP monitoring Django application is introduced with models for device configuration and time-series metrics, database migrations to configure TimescaleDB hypertables and compression, serializers for API exposure, settings registration, linting workflow, and pysnmp dependency addition. Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~25 minutes
Poem
Pre-merge checks and finishing touches❌ Failed checks (2 warnings)
✅ Passed checks (1 passed)
✨ Finishing touches
🧪 Generate unit tests (beta)
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. Comment |
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
There was a problem hiding this comment.
Actionable comments posted: 11
🧹 Nitpick comments (3)
.github/workflows/lint-snmp-monitoring.yml (1)
28-29: Consider pinning the flake8 version for reproducibility.Using
pip install flake8without a version pin means builds may behave differently over time as flake8 releases new versions with changed rules.🔎 Proposed fix
- name: Install flake8 - run: pip install flake8 + run: pip install flake8==7.1.1backend/control_center/snmp_monitoring/models.py (2)
71-75: Consider storingcommunity_stringencrypted or with extra protection.The SNMP community string is stored as plain text. While functional, this is a credential that could benefit from encryption at rest or being stored in a secrets management system, especially if the database may be accessed by personnel who shouldn't have network device credentials.
At minimum, ensure the API (covered in serializers) doesn't expose this value in responses.
146-166: Consider adding validators for percentage fields.Fields like
cpu_usage,memory_usage, anddisk_usagerepresent percentages but lack validation constraints. Adding validators ensures data integrity.🔎 Example using Django validators
from django.core.validators import MinValueValidator, MaxValueValidator cpu_usage = models.FloatField( null=True, blank=True, validators=[MinValueValidator(0), MaxValueValidator(100)], help_text="CPU usage percentage" )
📜 Review details
Configuration used: defaults
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (18)
.github/workflows/lint-snmp-monitoring.ymlbackend/control_center/control_center/settings.pybackend/control_center/requirements.txtbackend/control_center/snmp_monitoring/__init__.pybackend/control_center/snmp_monitoring/admin.pybackend/control_center/snmp_monitoring/apps.pybackend/control_center/snmp_monitoring/migrations/0001_initial.pybackend/control_center/snmp_monitoring/migrations/0002_alter_primary_keys.pybackend/control_center/snmp_monitoring/migrations/0003_make_hypertables.pybackend/control_center/snmp_monitoring/migrations/0004_enable_compression.pybackend/control_center/snmp_monitoring/migrations/__init__.pybackend/control_center/snmp_monitoring/models.pybackend/control_center/snmp_monitoring/serializers.pybackend/control_center/snmp_monitoring/tasks.pybackend/control_center/snmp_monitoring/tests.pybackend/control_center/snmp_monitoring/urls.pybackend/control_center/snmp_monitoring/utilities.pybackend/control_center/snmp_monitoring/views.py
🧰 Additional context used
🧠 Learnings (2)
📓 Common learnings
Learnt from: keeganwhite
Repo: Taurine-Technology/sdn-launch-control PR: 25
File: backend/control_center/device_monitoring/migrations/0006_initial_port_utilization.py:16-17
Timestamp: 2025-10-20T16:36:21.415Z
Learning: When using TimescaleDB hypertables with Django in the sdn-launch-control project, composite primary keys that include the timestamp partitioning column (e.g., `(timestamp, id)`) are the recommended pattern and provide better query optimization than unique indexes. The project uses raw SQL migrations to create composite PKs while Django models continue to reference `id` as the primary key, which is a valid workaround pattern.
📚 Learning: 2025-10-20T16:36:21.415Z
Learnt from: keeganwhite
Repo: Taurine-Technology/sdn-launch-control PR: 25
File: backend/control_center/device_monitoring/migrations/0006_initial_port_utilization.py:16-17
Timestamp: 2025-10-20T16:36:21.415Z
Learning: When using TimescaleDB hypertables with Django in the sdn-launch-control project, composite primary keys that include the timestamp partitioning column (e.g., `(timestamp, id)`) are the recommended pattern and provide better query optimization than unique indexes. The project uses raw SQL migrations to create composite PKs while Django models continue to reference `id` as the primary key, which is a valid workaround pattern.
Applied to files:
backend/control_center/snmp_monitoring/migrations/0003_make_hypertables.pybackend/control_center/snmp_monitoring/migrations/0002_alter_primary_keys.pybackend/control_center/snmp_monitoring/migrations/0004_enable_compression.py
🧬 Code graph analysis (5)
backend/control_center/snmp_monitoring/migrations/0003_make_hypertables.py (2)
backend/control_center/snmp_monitoring/migrations/0002_alter_primary_keys.py (1)
Migration(6-42)backend/control_center/snmp_monitoring/migrations/0004_enable_compression.py (1)
Migration(6-70)
backend/control_center/snmp_monitoring/models.py (1)
backend/control_center/snmp_monitoring/serializers.py (3)
Meta(31-58)Meta(69-82)Meta(93-112)
backend/control_center/snmp_monitoring/serializers.py (1)
backend/control_center/snmp_monitoring/models.py (6)
SNMPDevice(37-128)SNMPMetrics(131-185)SNMPInterfaceStats(188-267)Meta(118-125)Meta(177-182)Meta(258-264)
backend/control_center/snmp_monitoring/migrations/0001_initial.py (3)
backend/control_center/snmp_monitoring/migrations/0002_alter_primary_keys.py (1)
Migration(6-42)backend/control_center/snmp_monitoring/migrations/0003_make_hypertables.py (1)
Migration(6-77)backend/control_center/snmp_monitoring/migrations/0004_enable_compression.py (1)
Migration(6-70)
backend/control_center/snmp_monitoring/migrations/0004_enable_compression.py (3)
backend/control_center/snmp_monitoring/migrations/0001_initial.py (1)
Migration(7-123)backend/control_center/snmp_monitoring/migrations/0002_alter_primary_keys.py (1)
Migration(6-42)backend/control_center/snmp_monitoring/migrations/0003_make_hypertables.py (1)
Migration(6-77)
🪛 GitHub Actions: Lint SNMP Monitoring
backend/control_center/snmp_monitoring/migrations/0003_make_hypertables.py
[warning] 78-78: flake8 W391 blank line at end of file.
backend/control_center/snmp_monitoring/models.py
[warning] 288-288: flake8 W292 no newline at end of file.
backend/control_center/snmp_monitoring/views.py
[error] 1-1: flake8 F401 'django.shortcuts.render' imported but unused.
backend/control_center/snmp_monitoring/serializers.py
[warning] 112-112: flake8 W292 no newline at end of file.
backend/control_center/snmp_monitoring/admin.py
[error] 1-1: flake8 F401: 'django.contrib.admin' imported but unused.
backend/control_center/snmp_monitoring/migrations/0002_alter_primary_keys.py
[warning] 43-43: flake8 W391 blank line at end of file.
backend/control_center/snmp_monitoring/tests.py
[error] 1-1: flake8 F401 'django.test.TestCase' imported but unused.
backend/control_center/snmp_monitoring/migrations/0001_initial.py
[error] 22-22: flake8 E501 line too long (340 > 120 characters).
[error] 23-23: flake8 E501 line too long (140 > 120 characters).
[error] 24-24: flake8 E501 line too long (167 > 120 characters).
[error] 26-26: flake8 E501 line too long (125 > 120 characters).
[error] 27-27: flake8 E501 line too long (130 > 120 characters).
[error] 28-28: flake8 E501 line too long (138 > 120 characters).
[error] 29-29: flake8 E501 line too long (147 > 120 characters).
[error] 30-30: flake8 E501 line too long (125 > 120 characters).
[error] 33-33: flake8 E501 line too long (241 > 120 characters).
[error] 48-48: flake8 E501 line too long (202 > 120 characters).
[error] 55-55: flake8 E501 line too long (136 > 120 characters).
[error] 56-56: flake8 E501 line too long (124 > 120 characters).
[error] 63-63: flake8 E501 line too long (136 > 120 characters).
[error] 64-64: flake8 E501 line too long (150 > 120 characters).
[error] 65-65: flake8 E501 line too long (140 > 120 characters).
[error] 66-66: flake8 E501 line too long (207 > 120 characters).
[error] 80-80: flake8 E501 line too long (135 > 120 characters).
[error] 81-81: flake8 E501 line too long (196 > 120 characters).
backend/control_center/snmp_monitoring/migrations/0004_enable_compression.py
[warning] 27-27: flake8 W293 blank line contains whitespace.
[warning] 41-41: flake8 W293 blank line contains whitespace.
[warning] 55-55: flake8 W293 blank line contains whitespace.
[warning] 71-71: flake8 W391 blank line at end of file.
🪛 Ruff (0.14.8)
backend/control_center/snmp_monitoring/migrations/0003_make_hypertables.py
9-11: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
13-77: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
backend/control_center/snmp_monitoring/models.py
119-119: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
120-124: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
125-125: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
178-178: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
179-182: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
259-259: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
260-264: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
backend/control_center/snmp_monitoring/migrations/0002_alter_primary_keys.py
9-11: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
13-42: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
backend/control_center/snmp_monitoring/migrations/0001_initial.py
11-13: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
15-123: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
backend/control_center/snmp_monitoring/migrations/0004_enable_compression.py
9-11: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
13-70: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
🔇 Additional comments (7)
backend/control_center/control_center/settings.py (2)
84-84: LGTM!The
snmp_monitoringapp is correctly registered inINSTALLED_APPS.
228-228: LGTM!The
snmp_monitoringlogger is properly added toAPP_LOGGERS, ensuring consistent logging configuration with other apps.backend/control_center/snmp_monitoring/apps.py (1)
1-6: LGTM!The app configuration follows Django conventions and is consistent with other apps in the project.
backend/control_center/snmp_monitoring/migrations/0002_alter_primary_keys.py (1)
13-42: LGTM! Composite primary keys correctly set up for TimescaleDB hypertables.The migration properly creates composite primary keys
(timestamp, id)for bothsnmpmetricsandsnmpinterfacestatstables. This pattern aligns with the project's established approach for TimescaleDB hypertables, enabling partition-aware queries and proper hypertable creation in the subsequent migration. Thereverse_sqlblocks correctly restore the original single-column primary keys. Based on learnings, this is the recommended pattern for TimescaleDB with Django.backend/control_center/requirements.txt (1)
35-35: pysnmp 7.1.22 version is valid and has no known security issues.The pysnmp library version 7.1.22 is confirmed as a legitimate release with no known vulnerabilities. Note that pysnmp 7.x is a major rewrite from the legacy pysnmp (previously maintained as pysnmp-lextudio). Ensure your environment runs Python 3.10 or higher, as this is required for version 7.x.
backend/control_center/snmp_monitoring/serializers.py (1)
61-82: LGTM!The read-only serializer correctly prevents modification of metrics data and includes useful derived fields (
device_name,device_ip) for API consumers.backend/control_center/snmp_monitoring/models.py (1)
37-128: SNMPDevice model is well-structured.Good use of:
- Appropriate field types and constraints
- Comprehensive help_text documentation
- Proper indexing strategy for query patterns
unique_togetherconstraint on(ip_address, port)Based on learnings, the composite primary key pattern used in subsequent migrations aligns with project conventions for TimescaleDB.
| from django.contrib import admin | ||
|
|
||
| # Register your models here. |
There was a problem hiding this comment.
Remove unused import or register the SNMP models.
The pipeline is failing due to the unused admin import. Consider either removing the import or registering the SNMP models for admin access.
🔎 Option 1: Remove unused import
-from django.contrib import admin
-
# Register your models here.🔎 Option 2: Register models
from django.contrib import admin
+from .models import SNMPDevice, SNMPMetrics, SNMPInterfaceStats, SNMPDeviceAlert
-# Register your models here.
+
+@admin.register(SNMPDevice)
+class SNMPDeviceAdmin(admin.ModelAdmin):
+ list_display = ('hostname', 'ip_address', 'is_active', 'last_polled')
+ list_filter = ('is_active', 'snmp_version')
+ search_fields = ('hostname', 'ip_address')
+
+
+@admin.register(SNMPDeviceAlert)
+class SNMPDeviceAlertAdmin(admin.ModelAdmin):
+ list_display = ('device', 'alert_type', 'severity', 'created_at', 'acknowledged')
+ list_filter = ('severity', 'acknowledged', 'alert_type')Would you like me to generate a complete admin registration for all SNMP models?
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| from django.contrib import admin | |
| # Register your models here. | |
| # Register your models here. |
🧰 Tools
🪛 GitHub Actions: Lint SNMP Monitoring
[error] 1-1: flake8 F401: 'django.contrib.admin' imported but unused.
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/admin.py lines 1-3, the
django.contrib.admin import is unused and causing the CI failure; either remove
the import line entirely, or replace it by importing your SNMP models (e.g. from
backend.control_center.snmp_monitoring.models import <ModelA>, <ModelB>, ...)
and register them with Django admin (e.g. admin.site.register(<ModelA>) or
register with a custom ModelAdmin) so the import is used; choose one of these
fixes and update the file accordingly.
| # Generated by Django 5.1.14 on 2025-11-24 10:43 | ||
|
|
||
| import django.db.models.deletion | ||
| from django.db import migrations, models | ||
|
|
||
|
|
||
| class Migration(migrations.Migration): | ||
|
|
||
| initial = True | ||
|
|
||
| dependencies = [ | ||
| ('network_device', '0004_alter_networkdevice_operating_system'), | ||
| ] | ||
|
|
||
| operations = [ | ||
| migrations.CreateModel( | ||
| name='SNMPDevice', | ||
| fields=[ | ||
| ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), | ||
| ('name', models.CharField(help_text='Human-readable device name', max_length=100)), | ||
| ('ip_address', models.GenericIPAddressField(db_index=True, help_text='IP address of the SNMP device')), | ||
| ('vendor', models.CharField(choices=[('mikrotik', 'MikroTik'), ('ubiquiti', 'Ubiquiti'), ('tp_link', 'TP-Link'), ('cisco', 'Cisco'), ('netgear', 'Netgear'), ('d_link', 'D-Link'), ('huawei', 'Huawei'), ('hp', 'HP'), ('other', 'Other')], db_index=True, default='other', help_text='Device vendor/manufacturer', max_length=50)), | ||
| ('community_string', models.CharField(help_text="SNMP community string (typically 'public' or 'private')", max_length=100)), | ||
| ('snmp_version', models.CharField(choices=[('2c', 'SNMP v2c')], default='2c', help_text='SNMP version (v3 support to be added later)', max_length=10)), | ||
| ('port', models.IntegerField(default=161, help_text='SNMP port (default: 161)')), | ||
| ('polling_interval', models.IntegerField(default=60, help_text='Polling interval in seconds (default: 60)')), | ||
| ('is_active', models.BooleanField(db_index=True, default=True, help_text='Whether this device should be polled')), | ||
| ('last_successful_poll', models.DateTimeField(blank=True, help_text='Timestamp of last successful SNMP poll', null=True)), | ||
| ('last_poll_attempt', models.DateTimeField(blank=True, help_text='Timestamp of last poll attempt (successful or not)', null=True)), | ||
| ('consecutive_failures', models.IntegerField(default=0, help_text='Number of consecutive polling failures')), | ||
| ('created_at', models.DateTimeField(auto_now_add=True)), | ||
| ('updated_at', models.DateTimeField(auto_now=True)), | ||
| ('network_device', models.ForeignKey(blank=True, help_text='Optional link to existing network device', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='snmp_devices', to='network_device.networkdevice')), | ||
| ], | ||
| options={ | ||
| 'ordering': ['-created_at'], | ||
| }, | ||
| ), | ||
| migrations.CreateModel( | ||
| name='SNMPDeviceAlert', | ||
| fields=[ | ||
| ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), | ||
| ('last_cpu_alert', models.DateTimeField(blank=True, null=True)), | ||
| ('last_memory_alert', models.DateTimeField(blank=True, null=True)), | ||
| ('last_disk_alert', models.DateTimeField(blank=True, null=True)), | ||
| ('last_interface_alert', models.DateTimeField(blank=True, null=True)), | ||
| ('last_connection_failure_alert', models.DateTimeField(blank=True, null=True)), | ||
| ('device', models.OneToOneField(help_text='SNMP device for alert tracking', on_delete=django.db.models.deletion.CASCADE, related_name='alert_settings', to='snmp_monitoring.snmpdevice')), | ||
| ], | ||
| ), | ||
| migrations.CreateModel( | ||
| name='SNMPInterfaceStats', | ||
| fields=[ | ||
| ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), | ||
| ('interface_name', models.CharField(db_index=True, help_text="Interface name (e.g., 'eth0', 'wlan0')", max_length=100)), | ||
| ('interface_index', models.IntegerField(blank=True, help_text='SNMP interface index (ifIndex)', null=True)), | ||
| ('bytes_in', models.BigIntegerField(default=0, help_text='Total bytes received on interface')), | ||
| ('bytes_out', models.BigIntegerField(default=0, help_text='Total bytes transmitted on interface')), | ||
| ('packets_in', models.BigIntegerField(default=0, help_text='Total packets received on interface')), | ||
| ('packets_out', models.BigIntegerField(default=0, help_text='Total packets transmitted on interface')), | ||
| ('errors_in', models.BigIntegerField(default=0, help_text='Input errors on interface')), | ||
| ('errors_out', models.BigIntegerField(default=0, help_text='Output errors on interface')), | ||
| ('throughput_mbps', models.FloatField(blank=True, help_text='Calculated throughput in Mbps (if available)', null=True)), | ||
| ('utilization_percent', models.FloatField(blank=True, help_text='Interface utilization percentage (if link speed known)', null=True)), | ||
| ('timestamp', models.DateTimeField(auto_now_add=True, db_index=True, help_text='Timestamp when statistics were collected')), | ||
| ('device', models.ForeignKey(help_text='SNMP device this interface belongs to', on_delete=django.db.models.deletion.CASCADE, related_name='interface_stats', to='snmp_monitoring.snmpdevice')), | ||
| ], | ||
| options={ | ||
| 'ordering': ['-timestamp'], | ||
| }, | ||
| ), | ||
| migrations.CreateModel( | ||
| name='SNMPMetrics', | ||
| fields=[ | ||
| ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), | ||
| ('cpu_usage', models.FloatField(blank=True, help_text='CPU usage percentage', null=True)), | ||
| ('memory_usage', models.FloatField(blank=True, help_text='Memory usage percentage', null=True)), | ||
| ('disk_usage', models.FloatField(blank=True, help_text='Disk usage percentage', null=True)), | ||
| ('uptime_seconds', models.BigIntegerField(blank=True, help_text='Device uptime in seconds', null=True)), | ||
| ('timestamp', models.DateTimeField(auto_now_add=True, db_index=True, help_text='Timestamp when metric was collected')), | ||
| ('device', models.ForeignKey(help_text='SNMP device this metric belongs to', on_delete=django.db.models.deletion.CASCADE, related_name='metrics', to='snmp_monitoring.snmpdevice')), | ||
| ], | ||
| options={ | ||
| 'ordering': ['-timestamp'], | ||
| }, | ||
| ), | ||
| migrations.AddIndex( | ||
| model_name='snmpdevice', | ||
| index=models.Index(fields=['ip_address'], name='snmp_monito_ip_addr_22fa3f_idx'), | ||
| ), | ||
| migrations.AddIndex( | ||
| model_name='snmpdevice', | ||
| index=models.Index(fields=['vendor'], name='snmp_monito_vendor_070617_idx'), | ||
| ), | ||
| migrations.AddIndex( | ||
| model_name='snmpdevice', | ||
| index=models.Index(fields=['is_active'], name='snmp_monito_is_acti_6fe373_idx'), | ||
| ), | ||
| migrations.AlterUniqueTogether( | ||
| name='snmpdevice', | ||
| unique_together={('ip_address', 'port')}, | ||
| ), | ||
| migrations.AddIndex( | ||
| model_name='snmpinterfacestats', | ||
| index=models.Index(fields=['device', 'interface_name', 'timestamp'], name='snmp_monito_device__726f5f_idx'), | ||
| ), | ||
| migrations.AddIndex( | ||
| model_name='snmpinterfacestats', | ||
| index=models.Index(fields=['device', 'timestamp'], name='snmp_monito_device__ff971d_idx'), | ||
| ), | ||
| migrations.AddIndex( | ||
| model_name='snmpinterfacestats', | ||
| index=models.Index(fields=['timestamp'], name='snmp_monito_timesta_30d54f_idx'), | ||
| ), | ||
| migrations.AddIndex( | ||
| model_name='snmpmetrics', | ||
| index=models.Index(fields=['device', 'timestamp'], name='snmp_monito_device__c7e7af_idx'), | ||
| ), | ||
| migrations.AddIndex( | ||
| model_name='snmpmetrics', | ||
| index=models.Index(fields=['timestamp'], name='snmp_monito_timesta_1f76d0_idx'), | ||
| ), | ||
| ] |
There was a problem hiding this comment.
Migration structure is correct; consider excluding from line-length linting.
The migration is auto-generated by Django and correctly creates all models with appropriate fields, indexes, and constraints. The schema aligns with models.py and supports the subsequent TimescaleDB migrations.
Pipeline is failing due to multiple E501 (line too long) errors. However, reformatting auto-generated migrations can cause issues with Django's migration auto-detection. Consider:
- Excluding migration files from the E501 rule in your flake8 configuration
- Or using
# noqa: E501comments if reformatting causes issues
# In .flake8 or setup.cfg
[flake8]
per-file-ignores =
*/migrations/*:E501🧰 Tools
🪛 GitHub Actions: Lint SNMP Monitoring
[error] 22-22: flake8 E501 line too long (340 > 120 characters).
[error] 23-23: flake8 E501 line too long (140 > 120 characters).
[error] 24-24: flake8 E501 line too long (167 > 120 characters).
[error] 26-26: flake8 E501 line too long (125 > 120 characters).
[error] 27-27: flake8 E501 line too long (130 > 120 characters).
[error] 28-28: flake8 E501 line too long (138 > 120 characters).
[error] 29-29: flake8 E501 line too long (147 > 120 characters).
[error] 30-30: flake8 E501 line too long (125 > 120 characters).
[error] 33-33: flake8 E501 line too long (241 > 120 characters).
[error] 48-48: flake8 E501 line too long (202 > 120 characters).
[error] 55-55: flake8 E501 line too long (136 > 120 characters).
[error] 56-56: flake8 E501 line too long (124 > 120 characters).
[error] 63-63: flake8 E501 line too long (136 > 120 characters).
[error] 64-64: flake8 E501 line too long (150 > 120 characters).
[error] 65-65: flake8 E501 line too long (140 > 120 characters).
[error] 66-66: flake8 E501 line too long (207 > 120 characters).
[error] 80-80: flake8 E501 line too long (135 > 120 characters).
[error] 81-81: flake8 E501 line too long (196 > 120 characters).
🪛 Ruff (0.14.8)
11-13: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
15-123: Mutable class attributes should be annotated with typing.ClassVar
(RUF012)
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/migrations/0001_initial.py (lines
1-123): CI is failing on E501 (line too long) for this auto-generated Django
migration; do NOT reformat this file. Fix by updating your flake8 configuration
to ignore E501 for migrations (add a per-file-ignores entry for
*/migrations/*:E501 in .flake8 or setup.cfg) or, if you must change files, add
`# noqa: E501` to the specific long lines in this migration; commit only the
config change (preferred) to stop linting migrations.
| """, | ||
| ), | ||
| ] | ||
|
|
There was a problem hiding this comment.
Remove trailing blank line to fix linting warning.
The pipeline reports a blank line at end of file (W391).
🔎 Proposed fix
Remove the empty line at line 43.
🧰 Tools
🪛 GitHub Actions: Lint SNMP Monitoring
[warning] 43-43: flake8 W391 blank line at end of file.
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/migrations/0002_alter_primary_keys.py
around line 43, the file ends with a trailing blank line causing lint warning
W391; remove the empty line at the end of the file so there is no blank line
after the last line of code.
| reverse_sql=""" | ||
| -- Safely drop hypertable only if it exists and is actually a hypertable | ||
| DO $$ | ||
| BEGIN | ||
| IF EXISTS ( | ||
| SELECT 1 FROM timescaledb_information.hypertables | ||
| WHERE hypertable_name = 'snmp_monitoring_snmpmetrics' | ||
| ) THEN | ||
| PERFORM drop_hypertable('snmp_monitoring_snmpmetrics', IF_EXISTS => TRUE); | ||
| END IF; | ||
| END $$; | ||
| """ |
There was a problem hiding this comment.
The drop_hypertable() function does not exist in TimescaleDB — this reverse migration will fail.
TimescaleDB drops hypertables using standard PostgreSQL DROP TABLE commands. The reverse SQL uses PERFORM drop_hypertable(...), which is not a valid TimescaleDB function and will cause a runtime error during rollback.
Either:
- Use
migrations.RunSQL.noopfor the reverse (accept that full rollback is not supported) - Replace
drop_hypertable()withDROP TABLE IF EXISTS snmp_monitoring_snmpmetrics
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/migrations/0003_make_hypertables.py
around lines 36 to 47, the reverse_sql currently calls PERFORM
drop_hypertable(...) which is not a valid TimescaleDB function and will fail on
rollback; replace the reverse action with either migrations.RunSQL.noop (if you
want to mark rollback as unsupported) or substitute the invalid call with a
plain DROP TABLE IF EXISTS snmp_monitoring_snmpmetrics (optionally preceded by a
check against timescaledb_information if you want to keep the conditional), and
update the RunSQL reverse_sql accordingly so the migration rollback does not
invoke a nonexistent function.
| """ | ||
| ), | ||
| ] | ||
|
|
There was a problem hiding this comment.
Remove trailing blank line.
Pipeline failure indicates a blank line at end of file (flake8 W391).
🧰 Tools
🪛 GitHub Actions: Lint SNMP Monitoring
[warning] 78-78: flake8 W391 blank line at end of file.
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/migrations/0003_make_hypertables.py
around line 78: there is a trailing blank line at EOF causing flake8 W391;
remove the extra empty line so the file does not end with a blank line and
ensure the file ends with a single newline character (no additional blank lines
after the last code line).
| class SNMPDeviceAlert(models.Model): | ||
| """ | ||
| Tracks last notification time per device to prevent notification flooding. | ||
| Similar to DeviceHealthAlert in device_monitoring app. | ||
| """ | ||
| device = models.OneToOneField( | ||
| SNMPDevice, | ||
| on_delete=models.CASCADE, | ||
| related_name='alert_settings', | ||
| help_text="SNMP device for alert tracking" | ||
| ) | ||
| last_cpu_alert = models.DateTimeField(null=True, blank=True) | ||
| last_memory_alert = models.DateTimeField(null=True, blank=True) | ||
| last_disk_alert = models.DateTimeField(null=True, blank=True) | ||
| last_interface_alert = models.DateTimeField(null=True, blank=True) | ||
| last_connection_failure_alert = models.DateTimeField(null=True, blank=True) | ||
|
|
||
| def __str__(self): | ||
| return f"Alert settings for {self.device.name}" No newline at end of file |
There was a problem hiding this comment.
LGTM, but add trailing newline.
SNMPDeviceAlert model correctly tracks alert state per device. Pipeline failure indicates missing newline at end of file (flake8 W292).
🧰 Tools
🪛 GitHub Actions: Lint SNMP Monitoring
[warning] 288-288: flake8 W292 no newline at end of file.
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/models.py around lines 270 to 288 the
file ends without a trailing newline causing flake8 W292; add a single newline
character at the end of the file (ensure the final line ends with '\n' and save
the file) so the repository contains a proper EOF newline.
| 'ip_address', | ||
| 'vendor', | ||
| 'vendor_display', | ||
| 'community_string', |
There was a problem hiding this comment.
Security: Consider making community_string write-only.
The SNMP community string is essentially a password/credential. Exposing it in API responses could leak sensitive authentication data. Consider marking it as write_only to prevent exposure in GET responses.
🔎 Proposed fix
class SNMPDeviceSerializer(serializers.ModelSerializer):
"""
Serializer for SNMPDevice model.
Used for creating, updating, and listing SNMP devices.
"""
vendor_display = serializers.CharField(source='get_vendor_display', read_only=True)
+ community_string = serializers.CharField(write_only=True)
class Meta:
model = SNMPDevice
fields = (
'id',
'network_device',
'name',
'ip_address',
'vendor',
'vendor_display',
'community_string',
# ... rest of fields
)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| 'community_string', | |
| class SNMPDeviceSerializer(serializers.ModelSerializer): | |
| """ | |
| Serializer for SNMPDevice model. | |
| Used for creating, updating, and listing SNMP devices. | |
| """ | |
| vendor_display = serializers.CharField(source='get_vendor_display', read_only=True) | |
| community_string = serializers.CharField(write_only=True) | |
| class Meta: | |
| model = SNMPDevice | |
| fields = ( | |
| 'id', | |
| 'network_device', | |
| 'name', | |
| 'ip_address', | |
| 'vendor', | |
| 'vendor_display', | |
| 'community_string', | |
| ) |
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/serializers.py at line 40, the
'community_string' field is currently exposed in serialized output; mark it
write-only so it cannot appear in API GET responses. Update the serializer to
set community_string as write_only=True (either by declaring it explicitly as a
serializers.CharField(write_only=True, ...) or by adding "community_string":
{"write_only": True} to Meta.extra_kwargs), ensure create/update still accept
and use the field, and run tests to confirm it no longer appears in response
payloads.
| class SNMPInterfaceStatsSerializer(serializers.ModelSerializer): | ||
| """ | ||
| Serializer for SNMPInterfaceStats model. | ||
| Read-only serializer for querying historical interface statistics. | ||
| """ | ||
| device_name = serializers.CharField(source='device.name', read_only=True) | ||
| device_ip = serializers.CharField(source='device.ip_address', read_only=True) | ||
|
|
||
| class Meta: | ||
| model = SNMPInterfaceStats | ||
| fields = ( | ||
| 'id', | ||
| 'device', | ||
| 'device_name', | ||
| 'device_ip', | ||
| 'interface_name', | ||
| 'interface_index', | ||
| 'bytes_in', | ||
| 'bytes_out', | ||
| 'packets_in', | ||
| 'packets_out', | ||
| 'errors_in', | ||
| 'errors_out', | ||
| 'throughput_mbps', | ||
| 'utilization_percent', | ||
| 'timestamp', | ||
| ) | ||
| read_only_fields = fields No newline at end of file |
There was a problem hiding this comment.
LGTM, but add trailing newline.
The interface stats serializer is correctly structured as read-only. Pipeline failure indicates missing newline at end of file (flake8 W292).
🧰 Tools
🪛 GitHub Actions: Lint SNMP Monitoring
[warning] 112-112: flake8 W292 no newline at end of file.
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/serializers.py around lines 85 to 112,
the file is missing a trailing newline which causes flake8 W292; fix by adding a
single newline character at the end of the file so the last line terminates with
'\n' and re-run linters.
| from django.test import TestCase | ||
|
|
||
| # Create your tests here. |
There was a problem hiding this comment.
Remove unused import to fix linting failure.
The pipeline is failing due to the unused TestCase import. Remove it until tests are implemented.
🔎 Proposed fix
-from django.test import TestCase
-
# Create your tests here.📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| from django.test import TestCase | |
| # Create your tests here. | |
| # Create your tests here. |
🧰 Tools
🪛 GitHub Actions: Lint SNMP Monitoring
[error] 1-1: flake8 F401 'django.test.TestCase' imported but unused.
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/tests.py lines 1-3, the file imports
TestCase but doesn't use it which causes a linting failure; remove the unused
import line (or delete the entire file content except a placeholder comment) so
there are no unused imports until tests are implemented.
| from django.shortcuts import render | ||
|
|
||
| # Create your views here. |
There was a problem hiding this comment.
Remove unused import to fix linting failure.
The pipeline is failing due to the unused render import. Since this is a placeholder file, either remove the import or implement the ViewSets mentioned in the PR objectives.
🔎 Proposed fix
-from django.shortcuts import render
-
# Create your views here.📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| from django.shortcuts import render | |
| # Create your views here. | |
| # Create your views here. |
🧰 Tools
🪛 GitHub Actions: Lint SNMP Monitoring
[error] 1-1: flake8 F401 'django.shortcuts.render' imported but unused.
🤖 Prompt for AI Agents
In backend/control_center/snmp_monitoring/views.py lines 1-3, the file imports
render but never uses it causing lint failures; remove the unused import (delete
"from django.shortcuts import render") or alternatively implement the intended
ViewSets/handlers so render is used; update imports accordingly and ensure
flake8/linters pass.
2 participants
Implement Celery tasks for SNMP polling (poll_single_snmp_device, poll_all_snmp_devices, check_snmp_device_health).
Add DRF ViewSets and serializers for SNMP devices, metrics, and interface stats, including TimescaleDB aggregation endpoints.
Register snmp-monitoring routes under /api/v1/snmp-monitoring/ and wire into the main URL config.
Summary by CodeRabbit
New Features
Chores
✏️ Tip: You can customize this high-level summary in your review settings.