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agent_platform_oci/apps/channel_gateway/README.md
2026-06-19 22:17:09 -03:00

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# External Channel Gateway
This service is a separate Channel Gateway that sits in front of the Agent Framework backend.
It has its own runtime mode, independent from the backend input mode.
## Runtime modes
```env
CHANNEL_GATEWAY_RUNTIME_MODE=adapter
```
`adapter` means this service receives channel-specific payloads and translates them into `GatewayRequest` before calling the Agent Framework backend.
```env
CHANNEL_GATEWAY_RUNTIME_MODE=proxy
```
`proxy` means this service accepts only an already-built `GatewayRequest` at `/gateway/message` and forwards it after validation.
## Recommended enterprise setup
In `channel_gateway/.env`:
```env
CHANNEL_GATEWAY_RUNTIME_MODE=adapter
AGENT_FRAMEWORK_BASE_URL=http://localhost:8000
DEFAULT_TENANT_ID=default
DEFAULT_AGENT_ID=telecom_contas
```
In `agent_template_backend/.env`:
```env
FRAMEWORK_CHANNEL_INPUT_MODE=external
```
This means:
```text
channel_gateway:7000 = understands channel payloads and builds GatewayRequest
backend:8000 = accepts only GatewayRequest and does not parse native channel payloads
```
## Run
```bash
cd channel_gateway
cp .env.example .env
uvicorn app.main:app --host 0.0.0.0 --port 7000
```
## Test web adapter endpoint
```bash
curl -s -X POST "http://localhost:7000/channels/web/message" \
-H "Content-Type: application/json" \
-d '{
"message": "Quero consultar minha fatura",
"session_id": "external-gw-test-001",
"user_id": "user-external-001",
"message_id": "msg-external-001",
"customer_key": "11999999999",
"contract_key": "3000131180",
"interaction_key": "301953872",
"session_key": "external-gw-test-001"
}' | jq
```
## Test proxy mode
Set:
```env
CHANNEL_GATEWAY_RUNTIME_MODE=proxy
```
Then call:
```bash
curl -s -X POST "http://localhost:7000/gateway/message" \
-H "Content-Type: application/json" \
-d '{
"channel": "web",
"tenant_id": "default",
"agent_id": "telecom_contas",
"payload": {
"message": "Quero consultar minha fatura",
"session_id": "proxy-test-001"
}
}' | jq
```
## Important distinction
Do not use `CHANNEL_GATEWAY_MODE=external` to mean “this service is external”.
Use:
```env
CHANNEL_GATEWAY_RUNTIME_MODE=adapter
```
for the external gateway service that owns adapters.
Use:
```env
FRAMEWORK_CHANNEL_INPUT_MODE=external
```
in the Agent Framework backend when the backend must accept only normalized `GatewayRequest` payloads.