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feat(orchestrator+egress): slice 8 — multi-tenant egress via the resolver (#352)
The egress addon now selects each request's Config by the calling bottle's
source IP, so one shared sidecar serves every bottle. Opt-in and fail-closed;
single-tenant behaviour is unchanged.

Orchestrator side (source-IP-primary attribution, per the PRD invariant):
  * registry: `by_source_ip` (the single active bottle at a source IP —
    network-layer attribution); `attribute` now composes it + the token.
  * service: `resolve(source_ip, token="")` — with a token, strict
    attribution; without, source IP alone.
  * control_plane: `POST /resolve`'s identity_token is now OPTIONAL (absent
    → source-IP-only); split cleanly from the token-required `/attribute`.
  * policy_resolver: `resolve` token now optional.

Egress side:
  * egress_addon_core: `resolve_client_config(resolver, client_ip, token)` —
    fetches + parses the client's Config, **fail-closed**: unattributed, a
    resolver error, or an unparseable policy all yield deny-all (no routes).
    Host-testable; `PolicyResolverLike` Protocol keeps it import-free.
  * egress_addon: consolidated mode when `BOT_BOTTLE_ORCHESTRATOR_URL` is
    set → `_active_config(flow)` resolves per client IP (reads + strips the
    `x-bot-bottle-identity` header); `request()` uses it. Unset → the static
    routes file, exactly as before. `PolicyResolver` added to the bundle.

Security note: source-IP-only resolution is safe where the IP is unspoofable
(Firecracker /31 + nft) AND the control plane is reachable only by the
trusted sidecar; the identity token, when the agent injects it, strengthens
it on weaker backends.

Scope note: the egress data plane is now multi-tenant. Remaining to be fully
live: the network topology routing every bottle's proxy to the one shared
sidecar, git-gate multitenancy, and agent-side identity-token injection.

Tests: registry by_source_ip; orchestrator resolve (with/without token);
control-plane /resolve token-optional; resolver token-optional;
resolve_client_config fail-closed matrix. All 182 egress tests still pass
(single-tenant unchanged). Full suite green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WBMWTEtQdJ4W5UrWuLHCck
2026-07-13 17:48:46 -04:00

106 lines
4.7 KiB
Docker

# Per-bottle sidecar bundle image (PRD 0024).
#
# Collapses the prior per-sidecar images (egress, git-gate,
# supervise) into one. A small stdlib-Python init supervisor at
# /app/sidecar_init.py spawns all daemons, forwards SIGTERM, and
# propagates per-daemon stdout/stderr to the container log with a
# `[name]` prefix. See PRD 0024 for the rationale.
#
# Layout:
#
# /usr/bin/gitleaks gitleaks binary
# /app/egress_addon.py + siblings mitmproxy addon (egress)
# /app/egress-entrypoint.sh mitmdump launcher
# /app/supervise_server.py + .py supervise MCP server
# /app/sidecar_init.py PID 1 supervisor
# /etc/egress/routes.yaml bind-mounted at run time
# /etc/git-gate/pre-receive docker-cp'd at start time
# /git-gate-entrypoint.sh docker-cp'd at start time
# /git-gate/creds/* docker-cp'd at start time
# /git/* bare repos, populated at runtime
# /run/supervise/bot-bottle.db bind-mounted at run time
# /home/mitmproxy/.mitmproxy/ mitmproxy CA dir
#
# Exposed ports inside the container:
# 9099 egress (mitmproxy, agent-facing HTTPS proxy)
# 9418 git-gate (git-daemon)
# 9420 git-gate smart HTTP (VM-backend agent-facing transport)
# 9100 supervise (MCP HTTP)
# Stage 1: gitleaks binary. The upstream gitleaks image is alpine
# with the binary at /usr/bin/gitleaks. Pinned by digest in lockstep
# with Dockerfile.git-gate's prior base (now deleted at chunk 3).
FROM zricethezav/gitleaks@sha256:c00b6bd0aeb3071cbcb79009cb16a60dd9e0a7c60e2be9ab65d25e6bc8abbb7f AS gitleaks-src
# Stage 2: assembly. mitmproxy/mitmproxy is debian-slim-based with
# Python + mitmdump pre-installed — heavier than the others, so
# this stage starts there and pulls the standalone binaries in.
FROM mitmproxy/mitmproxy:11.1.3
# Run as root inside the bundle. The bundle is the isolation
# boundary; per-daemon user separation inside it is not load-bearing
# and complicates the supervisor's spawn path.
USER root
# Runtime system deps:
# git supplies the `git daemon` subcommand (no separate package)
# plus the core `git` binary the pre-receive hook invokes.
# openssh-client supplies the upstream SSH transport the
# pre-receive hook uses to forward accepted refs.
# ca-certificates is needed for mitmdump upstream TLS (the
# base image already has it; listed for explicitness).
RUN apt-get update \
&& apt-get install -y --no-install-recommends \
git openssh-client ca-certificates \
&& rm -rf /var/lib/apt/lists/*
# Pull the standalone binaries into the final image.
COPY --from=gitleaks-src /usr/bin/gitleaks /usr/bin/gitleaks
# Project Python: addon + server modules + the init supervisor.
# Kept flat under /app/ so mitmdump's loader resolves them as
# top-level siblings (absolute imports), matching the prior
# Dockerfile.egress / Dockerfile.supervise layout.
COPY bot_bottle/egress_addon_core.py /app/egress_addon_core.py
COPY bot_bottle/egress_dlp_config.py /app/egress_dlp_config.py
COPY bot_bottle/egress_addon.py /app/egress_addon.py
COPY bot_bottle/policy_resolver.py /app/policy_resolver.py
COPY bot_bottle/dlp_detectors.py /app/dlp_detectors.py
COPY bot_bottle/yaml_subset.py /app/yaml_subset.py
COPY bot_bottle/paths.py /app/paths.py
COPY bot_bottle/migrations.py /app/migrations.py
COPY bot_bottle/db_store.py /app/db_store.py
COPY bot_bottle/supervise_types.py /app/supervise_types.py
COPY bot_bottle/queue_store.py /app/queue_store.py
COPY bot_bottle/audit_store.py /app/audit_store.py
COPY bot_bottle/store_manager.py /app/store_manager.py
COPY bot_bottle/supervise.py /app/supervise.py
COPY bot_bottle/supervise_server.py /app/supervise_server.py
COPY bot_bottle/sidecar_init.py /app/sidecar_init.py
COPY bot_bottle/git_http_backend.py /app/git_http_backend.py
COPY bot_bottle/egress_entrypoint.sh /app/egress-entrypoint.sh
RUN chmod +x /app/egress-entrypoint.sh
# Pre-create runtime directories the compose renderer + start
# step expect to exist. `docker cp` does not create intermediate
# dirs, and bind mounts won't either if the parent is missing.
RUN mkdir -p \
/etc/egress \
/etc/git-gate \
/git-gate/creds \
/git \
/run/supervise \
/home/mitmproxy/.mitmproxy
# Documentation only — the compose renderer publishes whichever
# subset the bottle uses.
EXPOSE 8888 9099 9418 9420 9100
# WORKDIR matches Dockerfile.supervise's prior layout so the
# in-app same-dir import in supervise_server.py stays deterministic.
WORKDIR /app
# PID 1 is the supervisor. It owns signal handling and exit-code
# propagation; no `exec` chain in the entrypoint itself.
ENTRYPOINT ["python3", "/app/sidecar_init.py"]