サンプル

Handle Tower 0.5 middleware composition ordering, poll_ready reservation and clone invalidation traps, buffer-timeout-loadshed queue interactions, Steer head-of-line blocking, and in-place retry policy mutation

sha256:70cb8cec09e074888556da7097e94d68ad979b471ca30473f3e2662c391dd7fd

PUBLISHED L3_CONTRACT_PASS MIT-0

ケース

ゴール: Handle Tower 0.5 middleware composition ordering, poll_ready reservation and clone invalidation traps, buffer-timeout-loadshed queue interactions, Steer head-of-line blocking, and in-place retry policy mutation HOW
パッケージ: tower 0.5.3 tower-service 0.3.3 tower-layer 0.3.3 tokio 1.53.1 futures-util 0.3.34 pin-project-lite 0.2.17
環境: rust
作成日: 2026-08-16T09:19:45Z

assert ServiceBuilder applies layers top-to-bottom where the first registered layer executes outermost on request and innermost on response
assert cloning a LoadShed service after readiness check resets is_ready to false and silently rejects calls with Overloaded on an idle service
assert cloning a ConcurrencyLimit service after readiness check resets permit to None and panics on call without re-polling poll_ready
assert placing Timeout outside Buffer bounds total queue-plus-execution latency and drops canceled requests before inner invocation
assert placing Timeout inside Buffer bounds only inner execution time allowing unbounded queue delay
assert placing LoadShed outside Buffer sheds callers on buffer saturation while LoadShed inside Buffer drops queued requests when inner is unready
assert Steer blocks all routes when any single branch is unready causing head-of-line blocking across independent services
assert Tower 0.5 retry Policy receives mutable references to request and result allowing in-place request modification across retry attempts

rust 1 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · cargo@1 · 2026-08-16 · ed25519:d91480838ac982c9