GNS3-API: implement GET for specific drawing and link

Fixes #1249

gns3server/handlers/api/controller/drawing_handler.py

@@ -61,6 +61,26 @@ class DrawingHandler:
         response.set_status(201)
         response.json(drawing)
 
+    @Route.get(
+        r"/projects/{project_id}/drawings/{drawing_id}",
+        parameters={
+            "project_id": "Project UUID",
+            "drawing_id": "Drawing UUID"
+        },
+        status_codes={
+            200: "Drawing found",
+            400: "Invalid request",
+            404: "Drawing doesn't exist"
+        },
+        description="Get a drawing instance",
+        output=DRAWING_OBJECT_SCHEMA)
+    def get_drawing(request, response):
+
+        project = yield from Controller.instance().get_loaded_project(request.match_info["project_id"])
+        drawing = project.get_drawing(request.match_info["drawing_id"])
+        response.set_status(200)
+        response.json(drawing)
+
     @Route.put(
         r"/projects/{project_id}/drawings/{drawing_id}",
         parameters={
@@ -71,7 +91,7 @@ class DrawingHandler:
             201: "Drawing updated",
             400: "Invalid request"
         },
-        description="Create a new drawing instance",
+        description="Update a drawing instance",
         input=DRAWING_OBJECT_SCHEMA,
         output=DRAWING_OBJECT_SCHEMA)
     def update(request, response):

gns3server/handlers/api/controller/link_handler.py

@@ -97,6 +97,26 @@ class LinkHandler:
         response.set_status(200)
         response.json(link.available_filters())
 
+    @Route.get(
+        r"/projects/{project_id}/links/{link_id}",
+        parameters={
+            "project_id": "Project UUID",
+            "link_id": "Link UUID"
+        },
+        status_codes={
+            200: "Link found",
+            400: "Invalid request",
+            404: "Link doesn't exist"
+        },
+        description="Get a link instance",
+        output=LINK_OBJECT_SCHEMA)
+    def get_link(request, response):
+
+        project = yield from Controller.instance().get_loaded_project(request.match_info["project_id"])
+        link = project.get_link(request.match_info["link_id"])
+        response.set_status(200)
+        response.json(link)
+
     @Route.put(
         r"/projects/{project_id}/links/{link_id}",
         parameters={

tests/handlers/api/controller/test_drawing.py

@@ -50,6 +50,19 @@ def test_create_drawing(http_controller, tmpdir, project, async_run):
     assert response.json["drawing_id"] is not None
 
 
+def test_get_drawing(http_controller, tmpdir, project, async_run):
+
+    response = http_controller.post("/projects/{}/drawings".format(project.id), {
+        "svg": '<svg height="210" width="500"><line x1="0" y1="0" x2="200" y2="200" style="stroke:rgb(255,0,0);stroke-width:2" /></svg>',
+        "x": 10,
+        "y": 20,
+        "z": 0
+    },)
+    response = http_controller.get("/projects/{}/drawings/{}".format(project.id, response.json["drawing_id"]), example=True)
+    assert response.status == 200
+    assert response.json["x"] == 10
+
+
 def test_update_drawing(http_controller, tmpdir, project, async_run):
 
     response = http_controller.post("/projects/{}/drawings".format(project.id), {

tests/handlers/api/controller/test_link.py

@@ -128,6 +128,43 @@ def test_create_link_failure(http_controller, tmpdir, project, compute, async_ru
     assert len(project.links) == 0
 
 
+def test_get_link(http_controller, tmpdir, project, compute, async_run):
+    response = MagicMock()
+    response.json = {"console": 2048}
+    compute.post = AsyncioMagicMock(return_value=response)
+
+    node1 = async_run(project.add_node(compute, "node1", None, node_type="qemu"))
+    node1._ports = [EthernetPort("E0", 0, 0, 3)]
+    node2 = async_run(project.add_node(compute, "node2", None, node_type="qemu"))
+    node2._ports = [EthernetPort("E0", 0, 2, 4)]
+
+    with asyncio_patch("gns3server.controller.udp_link.UDPLink.create"):
+        response = http_controller.post("/projects/{}/links".format(project.id), {
+            "nodes": [
+                {
+                    "node_id": node1.id,
+                    "adapter_number": 0,
+                    "port_number": 3,
+                    "label": {
+                        "text": "Text",
+                        "x": 42,
+                        "y": 0
+                    }
+                },
+                {
+                    "node_id": node2.id,
+                    "adapter_number": 2,
+                    "port_number": 4
+                }
+            ]
+        })
+    link_id = response.json["link_id"]
+    assert response.json["nodes"][0]["label"]["x"] == 42
+    response = http_controller.get("/projects/{}/links/{}".format(project.id, link_id), example=True)
+    assert response.status == 200
+    assert response.json["nodes"][0]["label"]["x"] == 42
+
+
 def test_update_link_suspend(http_controller, tmpdir, project, compute, async_run):
     response = MagicMock()
     response.json = {"console": 2048}
@@ -242,7 +279,7 @@ def test_update_link(http_controller, tmpdir, project, compute, async_run):
             }
         ],
         "filters": filters
-    })
+    }, example=True)
     assert response.status == 201
     assert response.json["nodes"][0]["label"]["x"] == 64
     assert list(project.links.values())[0].filters == filters