Add Nokia SRL platform driver (#245)

CHANGELOG.md

@@ -9,6 +9,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Nokia SRL platform driver (`Platform.NOKIA_SRL`) (#245)
+
 ---
 
 ## [3.6.0] - 2026-03-26

README.md

@@ -16,6 +16,7 @@ Hierarchical Configuration has been used extensively on:
 In addition to the Cisco-style syntax, hier_config offers experimental support for Juniper-style configurations using set and delete commands. This allows users to remediate Junos configurations in native syntax. However, please note that Juniper syntax support is still in an experimental phase and has not been tested extensively. Use with caution in production environments.
 
 - [x] Juniper JunOS
+- [x] Nokia SRL (Service Router Linux)
 - [x] VyOS
 
 Hier Config is compatible with any NOS that utilizes a structured CLI syntax similar to Cisco IOS or Junos OS.

docs/architecture.md

@@ -111,6 +111,7 @@ A frozen Pydantic model holding lists of typed rule objects:
 | `HP_COMWARE5` | `HConfigDriverHPComware5` | `platforms/hp_comware5/driver.py` |
 | `HP_PROCURVE` | `HConfigDriverHPProcurve` | `platforms/hp_procurve/driver.py` |
 | `JUNIPER_JUNOS` | `HConfigDriverJuniperJUNOS` | `platforms/juniper_junos/driver.py` |
+| `NOKIA_SRL` | `HConfigDriverNokiaSRL` | `platforms/nokia_srl/driver.py` |
 | `VYOS` | `HConfigDriverVYOS` | `platforms/vyos/driver.py` |
 
 See [Drivers](drivers.md) for full documentation on customising or creating drivers.

docs/drivers.md

@@ -40,6 +40,7 @@ The following drivers are included in Hier Config:
 - **HP_PROCURVE**
 - **HUAWEI_VRP**
 - **JUNIPER_JUNOS**
+- **NOKIA_SRL**
 - **VYOS**
 
 To activate a driver, use the `get_hconfig_driver` utility provided by Hier Config:
@@ -144,6 +145,38 @@ driver = get_hconfig_driver(Platform.VYOS)
 
 ---
 
+### Nokia SRL (Service Router Linux) Driver
+
+Nokia SR Linux uses `set` and `delete` command syntax, similar to VyOS and JunOS. The driver converts hierarchical SRL configuration (from `info` output) into flat `set`/`delete` commands via a preprocessor.
+
+> **Experimental:** Nokia SRL support has not been tested extensively in production environments. Use with caution.
+
+- **[Declaration prefix](glossary.md#declaration-prefix)**: `set ` (prepended to each positive command).
+- **[Negation prefix](glossary.md#negation-prefix)**: `delete ` (replaces `no `).
+
+Platform enum: `Platform.NOKIA_SRL`
+
+```python
+from hier_config import Platform, get_hconfig_driver
+
+driver = get_hconfig_driver(Platform.NOKIA_SRL)
+```
+
+**Remediation example:**
+
+```python
+from hier_config import WorkflowRemediation, get_hconfig, Platform
+
+running = get_hconfig(Platform.NOKIA_SRL, running_text)
+intended = get_hconfig(Platform.NOKIA_SRL, intended_text)
+workflow = WorkflowRemediation(running, intended)
+
+for line in workflow.remediation_config.all_children_sorted():
+    print(line.cisco_style_text())
+```
+
+---
+
 ### Generic Driver
 
 The `GENERIC` driver contains no platform-specific rules. It is useful as a starting point for custom drivers or for platforms that follow standard Cisco-style syntax with few special cases.

docs/glossary.md

@@ -74,7 +74,7 @@ The string prepended to a command to negate (remove) it.  `HConfigDriverBase.neg
 |----------|----------------|
 | Cisco IOS / EOS / NX-OS | `"no "` |
 | HP Comware5 / H3C | `"undo "` |
-| JunOS / VyOS | `"delete "` |
+| JunOS / VyOS / Nokia SRL | `"delete "` |
 
 ---
 

docs/index.md

@@ -29,6 +29,7 @@
 | HP ProCurve (Aruba AOSS) | `Platform.HP_PROCURVE` | Fully supported |
 | HP Comware5 / H3C | `Platform.HP_COMWARE5` | Fully supported |
 | Juniper JunOS | `Platform.JUNIPER_JUNOS` | Experimental |
+| Nokia SRL | `Platform.NOKIA_SRL` | Experimental |
 | VyOS | `Platform.VYOS` | Experimental |
 | Generic | `Platform.GENERIC` | Base for custom drivers |
 

hier_config/constructors.py

@@ -23,6 +23,7 @@
 from .platforms.hp_procurve.view import HConfigViewHPProcurve
 from .platforms.huawei_vrp.driver import HConfigDriverHuaweiVrp
 from .platforms.juniper_junos.driver import HConfigDriverJuniperJUNOS
+from .platforms.nokia_srl.driver import HConfigDriverNokiaSRL
 from .platforms.view_base import HConfigViewBase
 from .platforms.vyos.driver import HConfigDriverVYOS
 from .root import HConfig
@@ -43,6 +44,7 @@ def get_hconfig_driver(platform: Platform) -> HConfigDriverBase:
         Platform.HP_COMWARE5: HConfigDriverHPComware5,
         Platform.HUAWEI_VRP: HConfigDriverHuaweiVrp,
         Platform.JUNIPER_JUNOS: HConfigDriverJuniperJUNOS,
+        Platform.NOKIA_SRL: HConfigDriverNokiaSRL,
         Platform.VYOS: HConfigDriverVYOS,
     }
     driver_cls = platform_drivers.get(platform)

hier_config/models.py

@@ -197,6 +197,7 @@ class Platform(str, Enum):
     HP_PROCURVE = auto()
     HUAWEI_VRP = auto()
     JUNIPER_JUNOS = auto()
+    NOKIA_SRL = auto()
     VYOS = auto()
 
 

hier_config/platforms/nokia_srl/driver.py

@@ -0,0 +1,38 @@
+from hier_config.child import HConfigChild
+from hier_config.platforms.driver_base import HConfigDriverBase, HConfigDriverRules
+from hier_config.platforms.functions import convert_to_set_commands
+
+
+class HConfigDriverNokiaSRL(HConfigDriverBase):  # pylint: disable=too-many-instance-attributes
+    """Driver for Nokia SR Linux.
+
+    Converts hierarchical SRL configuration into flat ``set``/``delete``
+    command syntax via a preprocessor.  Overrides ``declaration_prefix`` to
+    ``"set "`` and ``negation_prefix`` to ``"delete "``.
+    Platform enum: ``Platform.NOKIA_SRL``.
+    """
+
+    def swap_negation(self, child: HConfigChild) -> HConfigChild:
+        """Swap negation of a `self.text`."""
+        if child.text.startswith(self.negation_prefix):
+            child.text = f"{self.declaration_prefix}{child.text_without_negation}"
+        elif child.text.startswith(self.declaration_prefix):
+            child.text = f"{self.negation_prefix}{child.text.removeprefix(self.declaration_prefix)}"
+
+        return child
+
+    @property
+    def declaration_prefix(self) -> str:
+        return "set "
+
+    @property
+    def negation_prefix(self) -> str:
+        return "delete "
+
+    @staticmethod
+    def config_preprocessor(config_text: str) -> str:
+        return convert_to_set_commands(config_text)
+
+    @staticmethod
+    def _instantiate_rules() -> HConfigDriverRules:
+        return HConfigDriverRules()

hier_config/utils.py

@@ -36,6 +36,7 @@
     "junos": Platform.JUNIPER_JUNOS,
     "vyos": Platform.VYOS,
     "huawei_vrp": Platform.HUAWEI_VRP,
+    "nokia_srl": Platform.NOKIA_SRL,
 }