Add HW 3

2026-09-24 21:30:37 +03:00
parent 0a1eb51bf8
commit 6210b46c1f
35 changed files with 4012 additions and 0 deletions
@@ -0,0 +1,128 @@
+#!/bin/bash
+
+set -u
+set -o pipefail
+
+fatal() {
+    printf 'harness: %s\n' "$*" >&2
+    exit 1
+}
+
+wait_for_docker() {
+    attempts=30
+    while [ "$attempts" -gt 0 ]; do
+        docker info >/dev/null 2>&1 && return 0
+        attempts=$((attempts - 1))
+        sleep 1
+    done
+    return 1
+}
+
+cleanup() {
+    docker ps -q --filter ancestor=hw3img | while IFS= read -r container_id; do
+        [ -n "$container_id" ] || continue
+        docker rm --force "$container_id" >/dev/null 2>&1 || true
+    done
+}
+
+run_tests() {
+    local arg
+    local -a original_args=("$@")
+    local -a test_args=(-docker -test.timeout=10m)
+    while (($#)); do
+        arg="$1"
+        shift
+        case "$arg" in
+            -run|-count|-timeout|-parallel|-skip)
+                if (($# == 0)); then
+                    fatal "$arg requires a value"
+                fi
+                test_args+=("-test.${arg#-}" "$1")
+                shift
+                ;;
+            -run=*|-count=*|-timeout=*|-parallel=*|-skip=*)
+                test_args+=("-test.${arg#-}")
+                ;;
+            -v|-short|-failfast|-v=*|-short=*|-failfast=*)
+                test_args+=("-test.${arg#-}")
+                ;;
+            -test.*|-docker)
+                test_args+=("$arg")
+                ;;
+            *)
+                # Keep Go's flag handling for less common test and build options.
+                go test --docker -timeout 10m "${original_args[@]}"
+                return $?
+                ;;
+        esac
+    done
+    /usr/local/bin/hw3test "${test_args[@]}"
+}
+
+validate_score_file() {
+    score_lines="$(grep -c '^SCORE:' "$1" || true)"
+    valid_score_lines="$(grep -Ec '^SCORE: [0-9]+([.][0-9]{1,2})?$' "$1" || true)"
+    [ "$score_lines" -eq 1 ] && [ "$valid_score_lines" -eq 1 ] \
+        || fatal "test command must report exactly one valid SCORE line"
+}
+
+configure_registry_proxy() {
+    proxy_url="${DISTSYS_REGISTRY_PROXY_URL:-}"
+    ca_file="/run/distsys-registry-proxy/ca.crt"
+
+    [ -n "$proxy_url" ] || return 1
+    printf '%s' "$proxy_url" | grep -Eq '^http://[A-Za-z0-9.-]+(:[0-9]+)?$' || {
+        printf 'warning: invalid registry proxy URL; using direct Docker pulls\n' >&2
+        return 1
+    }
+    [ -f "$ca_file" ] && [ ! -L "$ca_file" ] || {
+        printf 'warning: registry proxy CA is unavailable; using direct Docker pulls\n' >&2
+        return 1
+    }
+
+    downloaded_ca="$(mktemp)" || return 1
+    if ! wget -q -T 5 -O "$downloaded_ca" "${proxy_url}/ca.crt" \
+        || ! cmp -s "$ca_file" "$downloaded_ca"; then
+        rm -f "$downloaded_ca"
+        printf 'warning: registry proxy is unavailable or its CA differs; using direct Docker pulls\n' >&2
+        return 1
+    fi
+    rm -f "$downloaded_ca"
+
+    cp "$ca_file" /usr/local/share/ca-certificates/distsys-registry-proxy.crt
+    update-ca-certificates >/dev/null
+    proxy_no_proxy='localhost,127.0.0.1,::1,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16'
+    export HTTP_PROXY="$proxy_url" HTTPS_PROXY="$proxy_url" NO_PROXY="$proxy_no_proxy"
+    export http_proxy="$proxy_url" https_proxy="$proxy_url" no_proxy="$proxy_no_proxy"
+}
+
+configure_registry_proxy || unset HTTP_PROXY HTTPS_PROXY NO_PROXY http_proxy https_proxy no_proxy
+
+if [ "${HW3_REQUIRE_ZRAM:-0}" = 1 ]; then
+    /usr/local/bin/verify-zram-scratch.sh || fatal "HW3_REQUIRE_ZRAM=1 but /hw/tests/tmp is not mounted from a zram ext4 device"
+fi
+
+# Start docker daemon
+trap cleanup EXIT
+dockerd-entrypoint.sh --storage-driver=overlay2 >/var/log/dockerd-entrypoint.log 2>&1 &
+if ! wait_for_docker; then
+    tail -n 200 /var/log/dockerd-entrypoint.log >&2 || true
+    fatal "inner Docker daemon did not become ready"
+fi
+
+# Build server image
+docker build solution -t hw3img || fatal "could not build solution image"
+
+# Run tests
+cd tests
+export NO_COLOR=1
+test_status=0
+run_tests "$@" 2>&1 | tee tests.log || test_status=$?
+validate_score_file tests.log
+
+# Go reports a non-zero status when some grading groups fail. A valid score is
+# the grading result; absence of a score remains an infrastructure failure.
+if [ "$test_status" -ne 0 ]; then
+    printf 'harness: grading tests exited with status %s after reporting a score\n' \
+        "$test_status" >&2
+fi