add kcl lab-1

Author: niqdev

docs/kcl.md

@@ -17,7 +17,11 @@ brew install kcl-lang/tap/kcl
 
 ```sh
 # execute program and output yaml
-kcl kcl/hello.k
-kcl kcl/server-1.k
-kcl kcl/server-2.k
+kcl kcl/examples/hello.k
+kcl kcl/examples/server-1.k
+kcl kcl/examples/server-2.k
+
+# labs
+kcl kcl/lab-1/my_config.k kcl/lab-1/my_config_test.k
+kcl kcl/lab-1/my_config.k -D priority=2
 ```

kcl/hello.k kcl/examples/hello.kkcl/hello.k renamed to kcl/examples/hello.k

@@ -0,0 +1,41 @@
+# variables with underscore prefix are non-exported and mutable
+# i.e. it will not appear in the output YAML, and it can be assigned multiple times
+_priority = option("priority")
+_cpu = 256
+_env = "dev"
+
+if _priority == 1:
+    _cpu = 256
+elif _priority == 2:
+    _cpu = 512
+elif _priority == 3:
+    _cpu = 1024
+else:
+    _cpu = 2048
+
+_priorityCpuMap = {
+    "1" = 256
+    "2" = 512
+    "3" = 1024
+}
+
+_name = "nginx"
+
+cpu = _cpu
+# using a dict to simplify logic and the default value is 2048
+cpuFromMap = _priorityCpuMap[str(_priority)] or 2048
+memory = _cpu * 2
+
+_command = [_name] # a list
+_command = _command + ["-f", "file"]  # Append items into command using + operator to contact two lists
+command = [c.lower() for c in _command]  # Take each element in the list to lowercase
+
+_labels = {
+    run = "my-{}".format(_name)
+    if _env:
+        env = _env  # Append a dict key-value pair when the _env is not None/Undefined or empty using if expressions
+}
+labels = _labels # a dict
+
+image = "{}:1.14.2".format(_name) # string format
+service = "my-service"

kcl/server-1.k kcl/examples/server-1.kkcl/server-1.k renamed to kcl/examples/server-1.k

@@ -0,0 +1,9 @@
+import my_config
+
+# debugging
+print(my_config.labels)
+
+# tests
+assert len(my_config.labels) > 0, "labels can't be empty"
+assert my_config.cpu > 256, "cpu cannot be less than 256"
+# assert "foo" in labels, "foo label is a must"