Zecheng Zhang
185 lines
6.9 KiB
Python
185 lines
6.9 KiB
Python
# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
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import asyncio
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import os
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from dotenv import load_dotenv
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from mirage import MountMode, Workspace
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from mirage.resource.ram import RAMResource
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from mirage.resource.s3 import S3Config, S3Resource
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load_dotenv(".env.development")
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config = S3Config(
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bucket=os.environ["AWS_S3_BUCKET"],
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region=os.environ.get("AWS_DEFAULT_REGION", "us-east-1"),
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aws_access_key_id=os.environ["AWS_ACCESS_KEY_ID"],
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aws_secret_access_key=os.environ["AWS_SECRET_ACCESS_KEY"],
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)
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s3 = S3Resource(config)
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mem = RAMResource()
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# The stdin-piping demos below need `sys.stdin`, which only the local
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# runtime provides; the default monty sandbox has no stdin.
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ws = Workspace(
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{
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"/s3/": s3,
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# The demo scripts live under /work, so the mount carries x.
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"/work/": (mem, MountMode.EXEC),
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},
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mode=MountMode.EXEC,
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runtimes=["local", "vfs"],
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)
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def ops_summary() -> str:
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records = ws.ops.records
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total = sum(r.bytes for r in records)
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return f"{len(records)} ops, {total} bytes transferred"
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STDIN_SCRIPT = """\
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import sys, json
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for line in sys.stdin:
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rec = json.loads(line)
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print(rec.get("type", "unknown"))
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"""
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async def main():
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print("=== pipe S3 data into python3 -c via stdin ===\n")
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print("--- cat example.jsonl | python3 -c (single line) ---")
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result = await ws.execute(
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'cat /s3/data/example.jsonl | python3 -c "import sys; '
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"print(f'lines: {sum(1 for _ in sys.stdin)}')\"")
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print(await result.stdout_str())
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print(f"Exit code: {result.exit_code}")
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print(f"Stats: {ops_summary()}\n")
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print("--- head -n 3 example.jsonl | python3 -c (multiline) ---")
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result = await ws.execute('head -n 3 /s3/data/example.jsonl | '
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'python3 -c "import sys, json\n'
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'for line in sys.stdin:\n'
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' rec = json.loads(line)\n'
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" print(rec.get('type', 'unknown'))\n"
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'"')
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print(await result.stdout_str())
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print(f"Exit code: {result.exit_code}")
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print(f"Stats: {ops_summary()}\n")
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print("=== pipe S3 data into python3 -c (extract + head) ===\n")
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result = await ws.execute('cat /s3/data/example.jsonl | '
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'python3 -c "import sys, json\n'
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'for line in sys.stdin:\n'
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' rec = json.loads(line)\n'
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' print(json.dumps(rec)[:80])\n'
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'" | head -n 3')
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print(await result.stdout_str())
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print(f"Exit code: {result.exit_code}")
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print(f"Stats: {ops_summary()}\n")
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print("=== python3 script file via VFS ===\n")
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await ws.execute("mkdir /work/scripts")
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await ws.execute(f"echo '{STDIN_SCRIPT}' > /work/scripts/parse_stdin.py")
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print("--- head -n 5 example.jsonl | python3 parse_stdin.py ---")
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result = await ws.execute("head -n 5 /s3/data/example.jsonl"
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" | python3 /work/scripts/parse_stdin.py")
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print(await result.stdout_str())
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if result.stderr:
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print("STDERR:", await result.stderr_str())
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print(f"Exit code: {result.exit_code}")
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print(f"Stats: {ops_summary()}\n")
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print("=== python3 -c: count + aggregate ===\n")
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result = await ws.execute('cat /s3/data/example.jsonl | '
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'python3 -c "import sys, json\n'
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'from collections import Counter\n'
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'counts = Counter()\n'
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'for line in sys.stdin:\n'
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' rec = json.loads(line)\n'
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" counts[rec.get('type', 'unknown')] += 1\n"
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'for k, v in counts.most_common(5):\n'
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" print(f'{k}: {v}')\n"
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'"')
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print(await result.stdout_str())
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print(f"Exit code: {result.exit_code}")
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print(f"Stats: {ops_summary()}\n")
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print("=== python3 -c with session env ===\n")
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await ws.execute("export GREETING=hello_from_mirage")
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result = await ws.execute(
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'python3 -c "import os; print(os.environ.get(\'GREETING\', \'none\'))"'
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)
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print(await result.stdout_str())
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print(f"Exit code: {result.exit_code}")
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print(f"Stats: {ops_summary()}")
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# ── heredoc patterns commonly used by AI agents ──
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# These exercise the heredoc fixes: dash-strip + quoted delimiter.
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print("\n=== python3 << 'PYEOF' (quoted: $X stays literal) ===")
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await ws.execute("export X=shellval")
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result = await ws.execute("python3 << 'PYEOF'\n"
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"x = '$X' # literal, no shell expansion\n"
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"print(x)\n"
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"PYEOF")
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print(f" stdout: {(await result.stdout_str()).strip()} "
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f"(expect '$X')")
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print("\n=== python3 << PYEOF (unquoted: $X expanded) ===")
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result = await ws.execute("python3 << PYEOF\n"
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"print('$X')\n"
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"PYEOF")
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print(f" stdout: {(await result.stdout_str()).strip()} "
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f"(expect 'shellval')")
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print("\n=== python3 <<-PYEOF (dash: tabs stripped, indented body) ===")
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result = await ws.execute("python3 <<-PYEOF\n"
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"\tfor i in range(3):\n"
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"\t print(f'item-{i}')\n"
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"\tPYEOF")
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out = (await result.stdout_str()).strip()
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print(f" stdout: {out!r} (expect 3 items)")
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print("\n=== python3 << EOF | grep keep (heredoc + pipe) ===")
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result = await ws.execute("python3 << EOF | grep keep\n"
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"for i in range(5):\n"
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" print('keep' if i % 2 else 'drop', i)\n"
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"EOF")
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out = (await result.stdout_str()).strip()
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print(f" filtered: {out.splitlines()}")
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print("\n=== heredoc in for-loop (body re-fires per iter) ===")
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result = await ws.execute(
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"for name in alice bob carol; do python3 <<-PYEOF\n"
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"\tname = '$name'\n"
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"\tprint(f'hello, {name}!')\n"
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"\tPYEOF\n"
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"done")
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for line in (await result.stdout_str()).strip().splitlines():
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print(f" {line}")
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await ws.close()
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asyncio.run(main())
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