fix(secrets): restore python Secrets.getClient as deprecated alias

docs.openc3.com/docs/getting-started/upgrading.md

@@ -373,6 +373,16 @@ The following target configuration keywords are silently ignored during parsing
 - **`CMD_DECOM_RETAIN_TIME`** — Sets the retention time for command decommutation data in QuestDB. Accepts a time value with a unit suffix: `h` (hours), `d` (days), `w` (weeks), `M` (months), or `y` (years). Example: `CMD_DECOM_RETAIN_TIME 30d`
 - **`TLM_DECOM_RETAIN_TIME`** — Sets the retention time for telemetry decommutation data in QuestDB. Same format as above. Example: `TLM_DECOM_RETAIN_TIME 1y`
 
+### COSMOS API Changes
+
+#### Python `Secrets.getClient()` renamed to `Secrets.get_client()`
+
+COSMOS 7.0 renamed the Python `Secrets.getClient()` class method to `Secrets.get_client()` without keeping the old name. In COSMOS 7.0 through 7.4, any Python plugin, interface, or microservice that calls `Secrets.getClient()` fails with an `AttributeError`. Releases starting with 7.5 restore `Secrets.getClient()` as a deprecated alias that logs a `DeprecationWarning`, matching the existing `Bucket.getClient()` alias.
+
+Update Python code to call `Secrets.get_client()`. Ruby code is unaffected: `Secrets.getClient` and `Bucket.getClient` still work, and starting with 7.5 Ruby also accepts `Secrets.get_client` and `Bucket.get_client` so the same names work in both languages.
+
+If you've updated your plugin but still see errors about `getClient`, an older copy of your plugin code is probably still being loaded. Check the Admin Console Plugins tab for a previous version of the plugin that is still installed, and check the `shared` Python packages in the Admin Console Packages tab for an old copy of your plugin's Python package that COSMOS 6 installed.
+
 ### Troubleshooting
 
 #### Init Container Failure

openc3/lib/openc3/utilities/bucket.rb

@@ -28,6 +28,11 @@ def self.getClient
       klass.new
     end
 
+    # snake_case alias to match the Python Bucket.get_client
+    def self.get_client # rubocop:disable Naming/AccessorMethodName
+      getClient()
+    end
+
     def initialize
       # Setup the client instance
     end

openc3/lib/openc3/utilities/secrets.rb

@@ -71,6 +71,11 @@ def self.getClient
       klass.new
     end
 
+    # snake_case alias to match the Python Secrets.get_client
+    def self.get_client # rubocop:disable Naming/AccessorMethodName
+      getClient()
+    end
+
     def keys(secret_store: nil, scope:)
       raise NotImplementedError, "#{self.class} has not implemented method '#{__method__}'"
     end

openc3/python/openc3/utilities/secrets.py

@@ -10,6 +10,7 @@
 # if purchased from OpenC3, Inc.
 
 import os
+import warnings
 
 from openc3.top_level import get_class_from_module
 from openc3.utilities.string import filename_to_class_name
@@ -78,6 +79,14 @@
         )
         return klass()
 
+    @classmethod
+    def getClient(cls):  # noqa: N802
+        """Deprecated: Use get_client() instead. This camelCase method is provided for backwards compatibility."""
+        warnings.warn(
+            "Secrets.getClient() is deprecated, use Secrets.get_client() instead", DeprecationWarning, stacklevel=2
+        )
+        return cls.get_client()
+
     def keys(self, secret_store=None, scope=None):
         raise RuntimeError(f"{self.__class__.__name__} has not implemented method 'keys'")
 

openc3/python/test/utilities/test_secrets.py

@@ -138,3 +138,13 @@ def test_setup_does_not_read_file_secrets_outside_the_secret_file_dir(self):
         for path in ["/etc/passwd", "/tmp/../etc/passwd"]:
             with self.assertRaisesRegex(ValueError, "must be under"):
                 secrets.setup([["FILE", "KEY", path]])
+
+    def test_get_client_returns_the_configured_backend(self):
+        with patch.dict(os.environ, {"OPENC3_SECRET_BACKEND": "redis"}):
+            self.assertEqual(Secrets.get_client().__class__.__name__, "RedisSecrets")
+
+    def test_get_client_camel_case_is_a_deprecated_alias(self):
+        with patch.object(Secrets, "get_client", return_value="client") as get_client:
+            with self.assertWarnsRegex(DeprecationWarning, r"use Secrets\.get_client\(\)"):
+                self.assertEqual(Secrets.getClient(), "client")
+            get_client.assert_called_once()

openc3/spec/utilities/bucket_spec.rb

@@ -30,5 +30,13 @@ module OpenC3
         expect(client).to be_a LocalBucket
       end
     end
+
+    describe "get_client" do
+      it "is an alias for getClient" do
+        ENV['OPENC3_CLOUD'] = 'AWS'
+        client = Bucket.get_client
+        expect(client).to be_a AwsBucket
+      end
+    end
   end
 end

openc3/spec/utilities/secrets_spec.rb

@@ -113,6 +113,14 @@ module OpenC3
       end
     end
 
+    describe "get_client" do
+      it "is an alias for getClient" do
+        client = double("client")
+        expect(Secrets).to receive(:getClient).and_return(client)
+        expect(Secrets.get_client).to be client
+      end
+    end
+
     describe "setup" do
       it "requires at least 3 items" do
         expect { Secrets.new.setup([['ENV', 'KEY']]) }.to raise_error(ArgumentError, /at least 3 items/)