Add minimal control plane with REST API, database, and reconciler

- REST API (chi router): sandbox CRUD, exec, pause/resume, file write/read
- PostgreSQL persistence via pgx/v5 + sqlc (sandboxes table with goose migration)
- Connect RPC client to host agent for all VM operations
- Reconciler syncs host agent state with DB every 30s (detects TTL-reaped sandboxes)
- OpenAPI 3.1 spec served at /openapi.yaml, Swagger UI at /docs
- Added WriteFile/ReadFile RPCs to hostagent proto and implementations
- File upload via multipart form, download via JSON body POST
- sandbox_id propagated from control plane to host agent on create
This commit is contained in:
2026-03-10 16:50:12 +06:00
parent d7b25b0891
commit ec3360d9ad
46 changed files with 2210 additions and 33 deletions

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internal/api/openapi.yaml Normal file
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openapi: "3.1.0"
info:
title: Wrenn Sandbox API
description: MicroVM-based code execution platform API.
version: "0.1.0"
servers:
- url: http://localhost:8080
description: Local development
paths:
/v1/sandboxes:
post:
summary: Create a sandbox
operationId: createSandbox
requestBody:
required: true
content:
application/json:
schema:
$ref: "#/components/schemas/CreateSandboxRequest"
responses:
"201":
description: Sandbox created
content:
application/json:
schema:
$ref: "#/components/schemas/Sandbox"
"502":
description: Host agent error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
get:
summary: List all sandboxes
operationId: listSandboxes
responses:
"200":
description: List of sandboxes
content:
application/json:
schema:
type: array
items:
$ref: "#/components/schemas/Sandbox"
/v1/sandboxes/{id}:
parameters:
- name: id
in: path
required: true
schema:
type: string
get:
summary: Get sandbox details
operationId: getSandbox
responses:
"200":
description: Sandbox details
content:
application/json:
schema:
$ref: "#/components/schemas/Sandbox"
"404":
description: Sandbox not found
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
delete:
summary: Destroy a sandbox
operationId: destroySandbox
responses:
"204":
description: Sandbox destroyed
/v1/sandboxes/{id}/exec:
parameters:
- name: id
in: path
required: true
schema:
type: string
post:
summary: Execute a command
operationId: execCommand
requestBody:
required: true
content:
application/json:
schema:
$ref: "#/components/schemas/ExecRequest"
responses:
"200":
description: Command output
content:
application/json:
schema:
$ref: "#/components/schemas/ExecResponse"
"404":
description: Sandbox not found
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"409":
description: Sandbox not running
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
/v1/sandboxes/{id}/pause:
parameters:
- name: id
in: path
required: true
schema:
type: string
post:
summary: Pause a running sandbox
operationId: pauseSandbox
responses:
"200":
description: Sandbox paused
content:
application/json:
schema:
$ref: "#/components/schemas/Sandbox"
"409":
description: Sandbox not running
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
/v1/sandboxes/{id}/resume:
parameters:
- name: id
in: path
required: true
schema:
type: string
post:
summary: Resume a paused sandbox
operationId: resumeSandbox
responses:
"200":
description: Sandbox resumed
content:
application/json:
schema:
$ref: "#/components/schemas/Sandbox"
"409":
description: Sandbox not paused
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
/v1/sandboxes/{id}/files/write:
parameters:
- name: id
in: path
required: true
schema:
type: string
post:
summary: Upload a file
operationId: uploadFile
requestBody:
required: true
content:
multipart/form-data:
schema:
type: object
required: [path, file]
properties:
path:
type: string
description: Absolute destination path inside the sandbox
file:
type: string
format: binary
description: File content
responses:
"204":
description: File uploaded
"409":
description: Sandbox not running
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"413":
description: File too large
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
/v1/sandboxes/{id}/files/read:
parameters:
- name: id
in: path
required: true
schema:
type: string
post:
summary: Download a file
operationId: downloadFile
requestBody:
required: true
content:
application/json:
schema:
$ref: "#/components/schemas/ReadFileRequest"
responses:
"200":
description: File content
content:
application/octet-stream:
schema:
type: string
format: binary
"404":
description: Sandbox or file not found
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
components:
schemas:
CreateSandboxRequest:
type: object
properties:
template:
type: string
default: minimal
vcpus:
type: integer
default: 1
memory_mb:
type: integer
default: 512
timeout_sec:
type: integer
default: 300
Sandbox:
type: object
properties:
id:
type: string
status:
type: string
enum: [pending, running, paused, stopped, error]
template:
type: string
vcpus:
type: integer
memory_mb:
type: integer
timeout_sec:
type: integer
guest_ip:
type: string
host_ip:
type: string
created_at:
type: string
format: date-time
started_at:
type: string
format: date-time
nullable: true
last_active_at:
type: string
format: date-time
nullable: true
last_updated:
type: string
format: date-time
ExecRequest:
type: object
required: [cmd]
properties:
cmd:
type: string
args:
type: array
items:
type: string
timeout_sec:
type: integer
default: 30
ExecResponse:
type: object
properties:
sandbox_id:
type: string
cmd:
type: string
stdout:
type: string
stderr:
type: string
exit_code:
type: integer
duration_ms:
type: integer
encoding:
type: string
enum: [utf-8, base64]
description: Output encoding. "base64" when stdout/stderr contain binary data.
ReadFileRequest:
type: object
required: [path]
properties:
path:
type: string
description: Absolute file path inside the sandbox
Error:
type: object
properties:
error:
type: object
properties:
code:
type: string
message:
type: string