fix internal plugin problem, issue #9

Dockerfile

@@ -20,10 +20,11 @@ RUN mkdir src
 
 COPY src/ ./src/
 COPY resources ./resources/
+COPY plugins ./plugins/
 
-WORKDIR /app/src
+#WORKDIR /app/src
 # Expose the gRPC port
 EXPOSE 50052
 
 # Run the server
-CMD ["python", "server.py"]
+CMD ["python", "src/server.py"]

Makefile

@@ -33,7 +33,7 @@ build:
 load:
 	kind load docker-image $(IMAGE_LOCAL) --name mcp-gateway
 
-podname := $(shell kubectl get pods -A |grep my-extproc | grep -v Terminating | awk '{print $$2}')
+podname := $(shell kubectl get pods -A |grep ${IMAGE_BASE} | grep -v Terminating | awk '{print $$2}')
 log:
 	kubectl logs ${podname} -n istio-system -f
 

ext-proc.yaml

@@ -30,9 +30,9 @@ spec:
       containers:
         - name: plugins-adapter
           image: plugins-adapter:0.1.0
-          # command: ["bash", "-c","--"]
-          # args: ["while true; do sleep 3600; done"]
-#          imagePullPolicy: IfNotPresent
+          #command: ["bash", "-c","--"]
+          #args: ["while true; do sleep 3600; done"]
+          #imagePullPolicy: IfNotPresent
           env:
             - name: PLUGINS_SERVER_HOST
               value: "0.0.0.0"
@@ -44,5 +44,7 @@ spec:
               value: "./resources/config/config.yaml"
             - name: PLUGIN_MANAGER_CONFIG
               value: "./resources/config/config.yaml"
+            - name: PYTHONPATH
+              value: "./"
           ports:
             - containerPort: 50052

plugins/examples/context_forge/internal/regex_filter/README.md

@@ -0,0 +1,244 @@
+# Search Replace Plugin for MCP Gateway
+
+> Author: Teryl Taylor
+> Version: 0.1.0
+
+A native plugin for MCP Gateway that performs regex-based search and replace operations on prompt arguments and responses.
+
+## Features
+
+- **Pre-fetch Hook**: Modifies prompt arguments before prompt retrieval
+- **Post-fetch Hook**: Modifies rendered prompt messages after processing
+- **Regex Support**: Full regex pattern matching and replacement
+- **Multiple Patterns**: Configure multiple search/replace pairs
+- **Chain Transformations**: Apply replacements in sequence
+
+## Installation
+
+The plugin is included with MCP Gateway and requires no additional installation. Simply enable it in your configuration.
+
+## Configuration
+
+Add the plugin to your `plugins/config.yaml`:
+
+```yaml
+plugins:
+  - name: "SearchReplacePlugin"
+    kind: "plugins.regex_filter.search_replace.SearchReplacePlugin"
+    description: "Performs text transformations using regex patterns"
+    version: "0.1"
+    author: "ContextForge"
+    hooks: ["prompt_pre_fetch", "prompt_post_fetch"]
+    tags: ["transformer", "regex", "text-processing"]
+    mode: "enforce"  # enforce | permissive | disabled
+    priority: 150    # Lower = higher priority
+    conditions:
+      - prompts: ["test_prompt", "chat_prompt"]  # Apply to specific prompts
+        server_ids: []  # Apply to all servers
+        tenant_ids: []  # Apply to all tenants
+    config:
+      words:
+        - search: "crap"
+          replace: "crud"
+        - search: "damn"
+          replace: "darn"
+        - search: "\\bAI\\b"  # Word boundary regex
+          replace: "artificial intelligence"
+```
+
+## Configuration Options
+
+### Plugin Settings
+
+| Field | Type | Required | Description |
+|-------|------|----------|-------------|
+| `name` | string | Yes | Unique plugin identifier |
+| `kind` | string | Yes | Plugin class path |
+| `hooks` | array | Yes | Hook points to enable |
+| `mode` | string | No | Execution mode: `enforce`, `permissive`, or `disabled` |
+| `priority` | integer | No | Execution order (default: 150) |
+| `conditions` | array | No | Conditional execution rules |
+
+### Search/Replace Configuration
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `words` | array | List of search/replace pairs |
+| `words[].search` | string | Regex pattern to search for |
+| `words[].replace` | string | Replacement text |
+
+## Usage Examples
+
+### Basic Word Replacement
+
+```yaml
+config:
+  words:
+    - search: "hello"
+      replace: "greetings"
+    - search: "goodbye"
+      replace: "farewell"
+```
+
+### Regex Pattern Matching
+
+```yaml
+config:
+  words:
+    # Replace email addresses with placeholder
+    - search: "[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}"
+      replace: "[email]"
+
+    # Replace phone numbers
+    - search: "\\b\\d{3}-\\d{3}-\\d{4}\\b"
+      replace: "[phone]"
+
+    # Case-insensitive replacement
+    - search: "(?i)microsoft"
+      replace: "MS"
+```
+
+### Chained Transformations
+
+```yaml
+config:
+  words:
+    # These apply in order
+    - search: "bad"
+      replace: "not good"
+    - search: "not good"
+      replace: "could be better"
+    # Result: "bad" → "not good" → "could be better"
+```
+
+## How It Works
+
+### Pre-fetch Hook
+1. Receives prompt name and arguments
+2. Applies all configured patterns to each argument value
+3. Returns modified arguments for prompt rendering
+
+### Post-fetch Hook
+1. Receives rendered prompt messages
+2. Applies patterns to message content
+3. Returns modified messages
+
+## Testing
+
+### Manual Testing
+
+1. Enable the plugin in your configuration
+2. Create a test prompt:
+```bash
+curl -X POST http://localhost:4444/prompts \
+  -H "Authorization: Bearer $TOKEN" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "name": "test_prompt",
+    "template": "User said: {{ message }}",
+    "argument_schema": {
+      "type": "object",
+      "properties": {"message": {"type": "string"}},
+      "required": ["message"]
+    }
+  }'
+```
+
+3. Test the replacement:
+```bash
+curl -X GET http://localhost:4444/prompts/test_prompt \
+  -H "Authorization: Bearer $TOKEN" \
+  -H "Content-Type: application/json" \
+  -d '{"message": "This is crap"}'
+
+# Expected: "User said: This is crud"
+```
+
+### Unit Testing
+
+```python
+import pytest
+from plugins.regex_filter.search_replace import SearchReplacePlugin, SearchReplaceConfig
+
+@pytest.mark.asyncio
+async def test_search_replace():
+    config = PluginConfig(
+        name="test",
+        kind="plugins.regex_filter.search_replace.SearchReplacePlugin",
+        version="0.1",
+        hooks=["prompt_pre_fetch"],
+        config={
+            "words": [
+                {"search": "foo", "replace": "bar"}
+            ]
+        }
+    )
+
+    plugin = SearchReplacePlugin(config)
+    payload = PromptPrehookPayload(
+        name="test",
+        args={"message": "foo is foo"}
+    )
+
+    result = await plugin.prompt_pre_fetch(payload, context)
+    assert result.modified_payload.args["message"] == "bar is bar"
+```
+
+## Performance Considerations
+
+- Patterns are compiled once during initialization
+- Regex complexity affects performance
+- Consider priority when chaining with other plugins
+- Use specific prompt conditions to limit scope
+
+## Common Use Cases
+
+1. **Profanity Filter**: Replace inappropriate language
+2. **Terminology Standardization**: Ensure consistent terms
+3. **PII Redaction**: Simple pattern-based PII removal
+4. **Format Normalization**: Standardize date/time formats
+5. **Abbreviation Expansion**: Expand common abbreviations
+
+## Troubleshooting
+
+### Patterns Not Matching
+- Check regex syntax and escaping
+- Test patterns with online regex tools
+- Enable debug logging to see transformations
+
+### Performance Issues
+- Simplify complex regex patterns
+- Reduce number of patterns
+- Use prompt conditions to limit scope
+
+### Unexpected Results
+- Remember patterns apply in order
+- Check for overlapping patterns
+- Test with simple inputs first
+
+## Available Hooks
+
+The plugin manifest declares support for:
+- `prompt_pre_hook` - Before prompt retrieval
+- `prompt_post_hook` - After prompt rendering
+- `tool_pre_hook` - Before tool execution (not implemented)
+- `tool_post_hook` - After tool execution (not implemented)
+
+Currently only prompt hooks are implemented.
+
+## Contributing
+
+To extend this plugin:
+
+1. Add new transformation strategies
+2. Implement tool hooks
+3. Add pattern validation
+4. Create preset pattern libraries
+
+## License
+
+Apache-2.0
+
+## Support
+
+For issues or questions, please open an issue in the MCP Gateway repository.

plugins/examples/context_forge/internal/regex_filter/plugin-manifest.yaml

@@ -0,0 +1,9 @@
+description: "Search replace plugin manifest."
+author: "ContextForge"
+version: "0.1.0"
+available_hooks:
+  - "prompt_pre_hook"
+  - "prompt_post_hook"
+  - "tool_pre_hook"
+  - "tool_post_hook"
+default_configs: