feat: add simln support to CLN

Author: Abdulkbk

src/components/designer/default/AddSimulationModal.tsx

@@ -105,7 +105,7 @@ const AddSimulationModal: React.FC<Props> = ({ network }) => {
               name="source"
               label={l('source')}
               nodeStatus={Status.Started}
-              implementation={['LND', 'eclair']}
+              implementation={['LND', 'eclair', 'c-lightning']}
               nodes={nodes}
             />
           </Col>
@@ -115,7 +115,7 @@ const AddSimulationModal: React.FC<Props> = ({ network }) => {
               name="destination"
               label={l('destination')}
               nodeStatus={Status.Started}
-              implementation={['LND', 'eclair']}
+              implementation={['LND', 'eclair', 'c-lightning']}
               nodes={nodes}
             />
           </Col>

src/lib/docker/dockerService.spec.ts

@@ -885,7 +885,7 @@ describe('DockerService', () => {
       name: 'my network',
       description: 'network description',
       lndNodes: 1,
-      clightningNodes: 0,
+      clightningNodes: 1,
       eclairNodes: 1,
       bitcoindNodes: 1,
       tapdNodes: 0,
@@ -899,6 +899,9 @@ describe('DockerService', () => {
     const eclairNodes = network.nodes.lightning.filter(
       n => n.implementation === 'eclair',
     );
+    const clightningNodes = network.nodes.lightning.filter(
+      n => n.implementation === 'c-lightning',
+    );
     beforeEach(() => {
       // Add simulation config to the test network
       network.simulation = {
@@ -960,9 +963,9 @@ describe('DockerService', () => {
     });
 
     it('should handle errors when using unsupported node types', async () => {
-      network.nodes.lightning[0].implementation = 'c-lightning';
+      network.nodes.lightning[0].implementation = 'litd';
       await expect(dockerService.startSimulation(network)).rejects.toThrow(
-        'unsupported node implementation: c-lightning',
+        'unsupported node implementation: litd',
       );
     });
 
@@ -984,5 +987,40 @@ describe('DockerService', () => {
         expect.stringContaining(`container_name: polar-n1-simln`),
       );
     });
+
+    // Now we should be able to use c-lightning in the simulation
+    it('should add c-lightning to the docker-compose.yml file', async () => {
+      network.simulation = {
+        networkId: 1,
+        source: clightningNodes[0],
+        destination: eclairNodes[0],
+        intervalSecs: 60,
+        amountMsat: 1000,
+        status: Status.Stopped,
+      };
+      dockerService.saveComposeFile(network);
+      expect(filesMock.write).toHaveBeenCalledWith(
+        expect.stringContaining('docker-compose.yml'),
+        expect.stringContaining(`container_name: polar-n1-simln`),
+      );
+
+      composeMock.upOne.mockResolvedValue(mockResult);
+      await dockerService.startSimulation(network);
+
+      // Verify directories were created
+      expect(fsMock.ensureDir).toHaveBeenCalled();
+
+      // Verify sim.json was written with correct config
+      expect(filesMock.write).toHaveBeenCalledWith(
+        expect.stringContaining('sim.json'),
+        expect.stringContaining(clightningNodes[0].name),
+      );
+
+      // Verify docker compose command was called
+      expect(composeMock.upOne).toHaveBeenCalledWith(
+        'simln',
+        expect.objectContaining({ cwd: network.path }),
+      );
+    });
   });
 });

src/lib/docker/dockerService.ts

@@ -446,6 +446,19 @@ class DockerService implements DockerLibrary {
           };
           break;
 
+        case 'c-lightning':
+          const cln = node as CLightningNode;
+          simNode = {
+            id: cln.name,
+            address: `host.docker.internal:${cln.ports.grpc}`,
+            ca_cert: `/home/simln/.${cln.paths.tlsCert?.split('volumes/').pop()}`,
+            client_cert: `/home/simln/.${cln.paths.tlsClientCert
+              ?.split('volumes/')
+              .pop()}`,
+            client_key: `/home/simln/.${cln.paths.tlsClientKey?.split('volumes/').pop()}`,
+          };
+          break;
+
         default:
           throw new Error(`unsupported node implementation: ${node.implementation}`);
       }

src/lib/docker/nodeTemplates.ts

@@ -198,6 +198,7 @@ export const simln = (
   volumes: [
     `./volumes/${name}:/home/simln/.simln`,
     `./volumes/${dockerConfigs.LND.volumeDirName}:/home/simln/.lnd`,
+    `./volumes/${dockerConfigs['c-lightning'].volumeDirName}:/home/simln/.c-lightning`,
   ],
   expose: [],
   ports: [],

src/utils/constants.ts

@@ -150,6 +150,7 @@ export const dockerConfigs: Record<NodeImplementationWithSimln, DockerConfig> =
       '--log-level=debug',
       '--dev-bitcoind-poll=2',
       '--dev-fast-gossip',
+      '--grpc-host=0.0.0.0',
       '--grpc-port=11001',
       '--log-file=-', // log to stdout
       '--log-file=/home/clightning/.lightning/debug.log',