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Docker Tool - Wrap docker CLI for container/image management.
Author: Hieu Louis (2026)
"""
from __future__ import annotations
import os
import shlex
import subprocess
from typing import Dict, Any, List, Optional
from .base import Tool, ToolResult, ToolContext, ToolCategory, ToolSafety
# Operations cho phép // Allowed operations
DOCKER_OPERATIONS = {
"build", "run", "ps", "images", "stop", "rm", "rmi",
"exec", "logs", "compose",
}
# Read-only ops (không cần dry_run simulate) // read-only ops
READONLY_OPS = {"ps", "images", "logs"}
# State-changing ops // state-changing ops (cần confirmation & dry_run)
WRITE_OPS = {"build", "run", "stop", "rm", "rmi", "exec", "compose"}
class DockerTool(Tool):
"""Wrap `docker` CLI: build/run/ps/images/stop/rm/rmi/exec/logs/compose."""
category = ToolCategory.DEVOPS
safety = ToolSafety.DANGEROUS
requires_confirmation = True
@property
def name(self) -> str:
return "docker"
@property
def description(self) -> str:
return (
"Wrap docker CLI: build, run, ps, images, stop, rm, rmi, exec, "
"logs, compose up/down. Có dry_run support."
)
@property
def parameters(self) -> Dict[str, Any]:
return {
"type": "object",
"properties": {
"operation": {
"type": "string",
"enum": sorted(DOCKER_OPERATIONS),
"description": "Docker operation",
},
"args": {
"type": "array",
"items": {"type": "string"},
"description": "Tham số bổ sung / extra CLI args",
},
"image": {"type": "string", "description": "Image name (build/run/rmi)"},
"container": {"type": "string", "description": "Container name/id (stop/rm/exec/logs)"},
"file": {"type": "string", "description": "Dockerfile path (build) hoặc compose file (compose)"},
"tag": {"type": "string", "description": "Tag (build)"},
"command": {"type": "string", "description": "Command (run/exec/compose)"},
},
"required": ["operation"],
}
def validate_args(self, args: Dict[str, Any]) -> Optional[str]:
op = args.get("operation")
if not op:
return "Missing required arg: operation"
if op not in DOCKER_OPERATIONS:
return f"Unsupported operation: {op}"
# Validate required contextual args
if op in {"stop", "rm", "exec", "logs"} and not args.get("container"):
return f"Operation '{op}' requires 'container' arg"
if op in {"run", "build", "rmi"} and not (args.get("image") or args.get("file")):
return f"Operation '{op}' requires 'image' or 'file' arg"
return None
def _build_command(self, args: Dict[str, Any]) -> List[str]:
"""Build docker CLI argv list."""
op = args["operation"]
extra: List[str] = list(args.get("args", []) or [])
if op == "build":
cmd = ["docker", "build"]
if args.get("file"):
cmd += ["-f", args["file"]]
if args.get("tag"):
cmd += ["-t", args["tag"]]
return cmd + extra + [args.get("file") or "."]
if op == "run":
cmd = ["docker", "run", "-d"]
return cmd + [args.get("image")] + extra + (
shlex.split(args["command"]) if args.get("command") else []
)
if op == "ps":
return ["docker", "ps"] + extra
if op == "images":
return ["docker", "images"] + extra
if op == "stop":
return ["docker", "stop"] + [args["container"]] + extra
if op == "rm":
return ["docker", "rm", "-f"] + [args["container"]] + extra
if op == "rmi":
return ["docker", "rmi"] + [args.get("image")] + extra
if op == "exec":
cmd = ["docker", "exec"]
return cmd + [args["container"]] + (
shlex.split(args["command"]) if args.get("command") else extra
)
if op == "logs":
return ["docker", "logs", "--tail", "500"] + [args["container"]] + extra
if op == "compose":
sub = args.get("command", "up -d")
cmd = ["docker", "compose"]
if args.get("file"):
cmd += ["-f", args["file"]]
return cmd + shlex.split(sub)
return ["docker"]
def execute(self, args: Dict[str, Any], context: ToolContext) -> ToolResult:
cmd = self._build_command(args)
op = args["operation"]
cwd = args.get("file") and os.path.dirname(args["file"]) or context.working_dir
# Resolve file dir nếu là compose/build
if op in {"compose", "build"} and args.get("file"):
cwd = os.path.dirname(os.path.abspath(args["file"])) or context.working_dir
# Dry-run: simulate // dry-run simulation
if context.dry_run and op in WRITE_OPS:
return ToolResult(
success=True,
output=f"[dry-run] Would execute: {' '.join(cmd)}",
metadata={
"dry_run": True,
"command": cmd,
"operation": op,
"cwd": cwd,
},
)
env = dict(os.environ)
env.update(context.env)
try:
result = subprocess.run(
cmd,
cwd=cwd,
env=env,
capture_output=True,
text=True,
timeout=context.timeout,
check=False,
)
return ToolResult(
success=(result.returncode == 0),
output=result.stdout,
error=result.stderr or None,
return_code=result.returncode,
metadata={
"operation": op,
"command": cmd,
"cwd": cwd,
"dry_run": False,
},
)
except FileNotFoundError:
return ToolResult(
success=False,
error="docker CLI not found. Install Docker hoặc cấu hình PATH.",
return_code=127,
)
except subprocess.TimeoutExpired:
return ToolResult(
success=False,
error=f"Docker command timed out after {context.timeout}s",
return_code=124,
)
except Exception as e:
return ToolResult(success=False, error=str(e), return_code=1)
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