Add configmap for RPC. Print latest block on loop

tilt_modules/configmap/README.md

@@ -0,0 +1,54 @@
+# Configmap
+
+Author: [Nick Santos](https://github.com/nicks)
+
+Helper functions for creating Kubernetes configmaps.
+
+## Functions
+
+### configmap_yaml
+
+```
+configmap_yaml(name: str, namespace: str = "", from_file: Union[str, List[str]] = None, watch: bool = True, from_env_file: str = None): Blob
+```
+
+Returns YAML for a config map generated from a file.
+
+* `from_file` ( str ) – equivalent to `kubectl create configmap --from-file`
+* `from_env_file` (str) - equivalent to `kubectl create configmap --from-env-file`
+* `watch` ( bool ) - auto-reload if the files change
+
+### configmap_create
+
+```
+configmap_create(name: str, namespace: str = "", from_file: Union[str, List[str]] = None, watch: bool = True, from_env_file: str = None)
+```
+
+Deploys a config map. Equivalent to
+
+```
+k8s_yaml(configmap_yaml('name', from_file=[...]))
+```
+
+### configmap_from_dict
+
+```
+configmap_from_dict(name: str, namespace: str = "", inputs: Dict[str, str]] = None): Blob
+```
+
+Returns YAML for a config map generated from a given dictionary. Nested dictionaries are not supported
+
+* `inputs` ( dict ) – equivalent to `kubectl create configmap --from-literal` for each key and value
+
+## Example Usage
+
+### For a Grafana config
+
+```
+load('ext://configmap', 'configmap_create')
+configmap_create('grafana-config', from_file=['grafana.ini=./grafana.ini'])
+```
+
+## Caveats
+
+- This extension doesn't do any validation to confirm that names or namespaces are valid.

tilt_modules/configmap/Tiltfile

@@ -0,0 +1,109 @@
+# -*- mode: Python -*-
+
+def configmap_yaml(name, namespace="", from_file=None, watch=True, from_env_file=None):
+  """Returns YAML for a generic configmap
+
+  Args:
+    name: The configmap name.
+    namespace: The namespace.
+    from_file: Use the from-file configmap generator. May be a string or a list of strings.
+       Example: ["grafana.ini=path/to/grafana.ini"]
+    watch: Reruns the Tiltfile and re-deploys automatically if the from-files change.
+       Defaults to true.
+    from_env_file: Use from-env-file configmap generator. Must be string.
+       Example: "./local.env"
+
+  Returns:
+    The configmap YAML as a blob
+  """
+
+  args = [
+    "kubectl",
+    "create",
+    "configmap",
+    name,
+  ]
+
+  if namespace:
+    args.extend(["-n", namespace])
+
+  generator = False
+
+  if from_file and from_env_file:
+    fail("Must specify either 'from_file' OR 'from_env_file'")
+
+  if from_file:
+    if type(from_file) == "string":
+      from_file = [from_file]
+
+    if type(from_file) == "list":
+      for f in from_file:
+        args.extend(["--from-file", f])
+        if watch:
+          l = f.split('=')
+          watch_file(l[len(l)-1])
+      generator = True
+    else:
+      fail("Bad from_file argument: %s" % from_file)
+  elif from_env_file:
+    if type(from_env_file) == "list":
+      fail("from_env_file only supports string as an input to prevent confusion with kubectl behavior of only loading the last item in a list")
+    elif type(from_env_file == "string"):
+      args.extend(["--from-env-file", from_env_file])
+      if watch:
+        watch_file(from_env_file)
+      generator = True
+
+  if not generator:
+    fail("No configmap generator specified")
+
+  args.extend(["-o=yaml", "--dry-run=client"])
+  return local(args, quiet=True)
+
+def configmap_from_dict(name, namespace="", inputs={}):
+    """Returns YAML for a generic configmap
+    Args:
+        name: The configmap name.
+        namespace: The namespace.
+        inputs: A dict of keys and values to use. Nesting is not supported
+    Returns:
+        The configmap YAML as a blob
+    """
+
+    args = [
+        "kubectl",
+        "create",
+        "configmap",
+        name,
+    ]
+
+    if namespace:
+        args.extend(["-n", namespace])
+
+    if type(inputs) != "dict":
+        fail("Bad argument to configmap_from_dict, inputs was not dict typed")
+
+    for k,v in inputs.items():
+        args.extend(["--from-literal", "%s=%s" % (k,v)])
+
+    args.extend(["-o=yaml", "--dry-run=client"])
+    return local(args, quiet=True)
+
+def configmap_create(name, namespace="", from_file=None, watch=True, from_env_file=None):
+  """Creates a configmap in the current Kubernetes cluster.
+
+  Generators:
+    - from_file: Wraps kubectl from-file behavior.
+    - from_env_file: Wraps kubectl from-env-file behavior.
+
+  Args:
+    name: The configmap name.
+    namespace: The namespace.
+    from_file: Use the from-file configmap generator. May be a string or a list of strings.
+       Example: ["grafana.ini=path/to/grafana.ini"]
+    watch: Reruns the Tiltfile and re-deploys automatically if the from-files change.
+       Defaults to true.
+    from_env_file: Use from-env-file configmap generator. Must be string.
+       Example: "./local.env"
+  """
+  k8s_yaml(configmap_yaml(name, namespace, from_file, watch, from_env_file))

tilt_modules/configmap/test/Tiltfile

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+load('../Tiltfile', 'configmap_create', 'configmap_from_dict')
+
+configmap_create('job-config', from_file='my-job.ini=./my-job.ini')
+configmap_create('env-job-config', from_env_file='my-job.env')
+configmap_from_dict('from-dict-config', inputs={"hello":"world"})
+
+k8s_yaml('job.yaml')

tilt_modules/configmap/test/job.yaml

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+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: configmap-verify
+spec:
+  backoffLimit: 1
+  template:
+    spec:
+      containers:
+      - name: configmap-env-verify
+        image: alpine
+        command: ["/bin/echo", "$(TEST_VAR)"]
+        env:
+          - name: TEST_VAR
+            valueFrom:
+              configMapKeyRef:
+                name: env-job-config
+                key: TEST_VAR
+      - name: configmap-verify
+        image: alpine
+        command: ["cat", "/etc/my-job/my-job.ini"]
+        volumeMounts:
+        - name: job-config
+          mountPath: /etc/my-job
+      restartPolicy: Never
+      volumes:
+      - name: job-config
+        configMap:
+          name: job-config

tilt_modules/configmap/test/my-job.env

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+TEST_VAR="hello-env!"

tilt_modules/configmap/test/my-job.ini

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+hello!

tilt_modules/configmap/test/test.sh

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+#!/bin/bash
+
+cd "$(dirname "$0")"
+
+set -ex
+tilt ci
+tilt down

tilt_modules/extensions.json

@@ -19,6 +19,11 @@
       "Name": "restart_process",
       "ExtensionRegistry": "https://github.com/tilt-dev/tilt-extensions",
       "TimeFetched": "2021-09-13T20:14:11.011803-04:00"
+    },
+    {
+      "Name": "configmap",
+      "ExtensionRegistry": "https://github.com/tilt-dev/tilt-extensions",
+      "TimeFetched": "2021-09-13T20:58:06.169124-04:00"
     }
   ]
 }