moved active/offline pipeline logic out; removed show_offline_pipelines CLI switch, instead show active/offline in one list indicating by symbol and text what the state is

pipelines.py

@@ -0,0 +1,96 @@
+try:
+    from cam_server_client import PipelineClient
+except ImportError:
+    from fake import PipelineClient
+
+
+
+class Pipelines:
+
+    def __init__(self, addr="http://sf-daqsync-01:8889"):
+        self.pc = PipelineClient(addr)
+        self.refresh()
+
+
+    def refresh(self):
+        pc = self.pc
+
+        all_pls = pc.get_pipelines()
+
+        si = pc.get_server_info()
+        active_pls = si["active_instances"]
+
+        offline_pls = set(all_pls) - set(active_pls)
+
+#        spec_pls = (i for i in pls if "spec_db" in i)
+
+        self.all     = sorted(all_pls)
+        self.active  = sorted(active_pls)
+        self.offline = sorted(offline_pls)
+
+
+    def __iter__(self):
+        return (Pipeline(n, self) for n in self.all)
+
+    def __getitem__(self, name):
+        if name not in self.all:
+            raise RuntimeError(f"pipeline \"{name}\" does not exist")
+        return Pipeline(name, self)
+
+
+
+class Pipeline:
+
+    def __init__(self, name, pls):
+        self.name = name
+        self.pls = pls
+
+    def __repr__(self):
+        return f"\"{self.name}\" is \"{self.state}\""
+
+
+    @property
+    def state(self):
+        pls = self.pls
+        name = self.name
+        pls.refresh()
+
+        if name not in pls.all:
+            raise RuntimeError(f"pipeline \"{name}\" does not exist")
+        if name in pls.active:
+            return "active"
+        if name in pls.offline:
+            return "offline"
+
+        raise RuntimeError(f"existing pipeline \"{name}\" is neither active nor offline")
+
+
+    def get(self):
+        pc = self.pls.pc
+        name = self.name
+        state = self.state
+
+        if state == "active":
+            return pc.get_instance_config(name)
+        if state == "offline":
+            return pc.get_config(name)
+
+        raise ValueError(f"state \"{state}\" for pipeline \"{name}\" not understood")
+
+
+    def set(self, cfg):
+        pc = self.pls.pc
+        name = self.name
+        state = self.state
+
+        if state == "active":
+            return pc.set_instance_config(name, cfg)
+        if state == "offline":
+            current = pc.get_config(name)
+            current.update(cfg)
+            return pc.set_config(name, current)
+
+        raise ValueError(f"state \"{state}\" for pipeline \"{name}\" not understood")
+
+
+