ephemeral_images.py DOX

Purpose

• Own the ephemeral_images.py helper module.
• This module stores temporary image payloads by reference for safe short-lived access.
• Keep this file-level DOX profile synchronized with ephemeral_images.py because this directory is intentionally flat.

Ownership

• ephemeral_images.py owns the runtime implementation.
• ephemeral_images.py.dox.md owns durable notes about responsibilities, contracts, side effects, and verification for that implementation.
• Classes:
• EphemeralImage (no explicit base class)
  • data_url(self) -> str
  • display_name(self) -> str
• Top-level functions:
• put_image_bytes(context_id: str, mime: str, payload: bytes, name: str=..., ttl_seconds: float=...) -> str
• put_image(context_id: str, mime: str, data: str, name: str=..., ttl_seconds: float=...) -> str
• is_ref(value: object) -> bool
• display_ref(ref: str) -> str
• get_image(ref: str, context_id: str=...) -> EphemeralImage | None
• consume_image(ref: str, context_id: str=...) -> EphemeralImage | None
• delete_image(ref: str) -> None
• clear_context(context_id: str) -> None
• _resolve_image(ref: str, context_id: str=..., consume: bool) -> EphemeralImage | None
• _compact_base64(data: str) -> str
• _normalize_mime(mime: str) -> str
• _prune_expired_locked(now: float | None=...) -> None
• Notable constants/configuration names: REF_PREFIX, DEFAULT_TTL_SECONDS.

Runtime Contracts

• Helper modules own reusable framework APIs and must preserve public callers unless all callers, tests, and docs are updated together.
• Update this file whenever public functions, classes, persistence behavior, path/security assumptions, side effects, or cross-module contracts change.
• Observed side-effect areas: filesystem deletion.
• Imported dependency areas include: __future__, base64, dataclasses, threading, time, uuid.

Key Concepts

• Important called helpers/classes observed in the source: dataclass, threading.RLock, base64.b64encode.decode, put_image, _compact_base64, base64.b64decode, _normalize_mime, time.time, EphemeralImage, str.strip.startswith, str.strip, _resolve_image, join, str.strip.lower, ValueError, _prune_expired_locked, is_ref, _store.pop, value.startswith, display_ref.
• Keep request/response, tool, or helper semantics documented here at the same time as source changes.

Work Guidance

• Preserve public helper APIs used by core code and plugins unless every caller is updated.
• Keep path, auth, secret, persistence, network, and subprocess behavior explicit and bounded.
• Prefer adding cohesive helper functions here only when behavior is reused across modules.

Verification

• Run targeted tests for changed helper behavior; run security regressions for auth, filesystem, WebSocket, tunnel, upload, or secret-handling helpers.
• Related tests observed by source search:
  • tests/test_browser_agent_regressions.py

Child DOX Index

No child DOX files.