Add plugin support

Chart.yaml

@@ -1,4 +1,4 @@
 apiVersion: v1
 name: pgdog
-version: v0.45
+version: v0.46
 appVersion: "0.1.30"

README.md

@@ -249,6 +249,22 @@ The `queueConfig` settings use Prometheus defaults and can be tuned
 for performance. Remote write is automatically enabled when `url` is
 set.
 
+### Plugins
+
+Add plugins to the `plugins` list. Each plugin requires a `name`; `config` is
+optional and accepts inline TOML content. When `config` is provided, a
+`<name>.toml` file is added to the ConfigMap and mounted at
+`/etc/pgdog/<name>.toml`.
+
+```yaml
+plugins:
+  - name: pgdog_routing
+    config: |
+      [routing]
+      key = "value"
+  - name: pgdog_auth
+```
+
 ### TCP Keep-Alive Configuration
 
 Configure socket-level TCP keep-alive behavior (optional):

templates/config.yaml

@@ -237,6 +237,14 @@ data:
         tables = {{ .tables | toToml }}
         {{- end }}
 
+        {{- range .Values.plugins }}
+        [[plugins]]
+        name = {{ .name | quote }}
+        {{- if .config }}
+        config = "/etc/pgdog/{{ .name }}.toml"
+        {{- end }}
+        {{- end }}
+
         {{- if or (hasKey .Values "tcpKeepalive") (hasKey .Values "tcpTime") (hasKey .Values "tcpInterval") (hasKey .Values "tcpRetries") }}
         [tcp]
         {{- if hasKey .Values "tcpKeepalive" }}
@@ -307,3 +315,9 @@ data:
         split_inserts = {{ .Values.rewrite.splitInserts | default "error" | quote }}
         primary_key = {{ .Values.rewrite.primaryKey | default "ignore" | quote }}
         {{- end }}
+    {{- range .Values.plugins }}
+    {{- if .config }}
+    {{ .name }}.toml: |
+{{ .config | indent 8 }}
+    {{- end }}
+    {{- end }}

test/values-full.yaml

@@ -57,6 +57,13 @@ omnishardedTables:
       - pg_constraint
       - pg_namespace
 
+plugins:
+  - name: pgdog_routing
+    config: |
+      [routing]
+      key = "value"
+  - name: pgdog_auth
+
 podAnnotations:
   prometheus.io/scrape: "true"
 

test/values-plugins.yaml

@@ -0,0 +1,12 @@
+# Plugins configuration test
+databases:
+  - name: primary
+    host: postgres-primary.example.com
+    port: 5432
+
+plugins:
+  - name: pgdog_routing
+    config: |
+      [routing]
+      key = "value"
+  - name: pgdog_auth

values.yaml

@@ -210,6 +210,19 @@ shardedMappings: []
 #       - "pg_index"
 omnishardedTables: []
 
+# plugins contains the list of plugin entries in pgdog.toml
+# Each entry requires: name; config is optional (inline TOML content)
+# When config is provided, a <name>.toml file is added to the ConfigMap
+# and the plugin config path is set to /etc/pgdog/<name>.toml
+# Example:
+# plugins:
+#   - name: "pgdog_routing"
+#     config: |
+#       [routing]
+#       key = "value"
+#   - name: "pgdog_auth"
+plugins: []
+
 # service contains the Kubernetes service configuration
 service:
   # type specifies the type of Kubernetes service