0d619e215e
An agent's memory cap was rendered into its flake (`memoryMaxBytes` → `services.hyperhive.agent.claudeMemoryMaxBytes`), so the closure depended on it and a changed cap reached the JSC heap ceiling and the subagent `MemoryHigh=` only after a rebuild. hive-c0re now writes the effective `MemoryMax=` in bytes to the agent's runtime dir (`/run/hive/memory-max-bytes` inside) in `write_dropins`, from the same value the drop-in gets. The file is removed for `infinity` or a RAM percentage, and left alone when the drop-in is kept. Inside the container, `nix/agent-modules/memory-cap.nix` reads it at boot: an environment generator sets `BUN_JSC_forceRAMSize` (75%) for every unit and `machinectl shell`, `/etc/set-environment` exports it in login shells, and a unit generator writes `MemoryHigh=` (2/3) as a drop-in for `hive-subagent-daemon`. The render drops `memoryMaxBytes`, the agent option is removed (both spellings fail eval with a removal message), and `effective_memory_bytes_from` goes with its only caller. Part of #5081 (slice S0-2).
94 lines
3.1 KiB
Shell
94 lines
3.1 KiB
Shell
# Cases for ./agent-memory-cap.nix. Each case writes a cap file (or none), runs
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# both generators with a clean environment and compares what they produced,
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# then sources the login-shell snippet under each POSIX shell and compares what
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# a child process sees.
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set -uo pipefail
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failures=0
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count=0
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fail() {
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echo "FAILED: $case: $*" >&2
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failures=$((failures + 1))
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}
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dir=$(mktemp -d)
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cap=$dir/memory-max-bytes
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sed "s|/run/hive/memory-max-bytes|$cap|g" "$ENV_GENERATOR" >"$dir/env-generator"
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sed "s|/run/hive/memory-max-bytes|$cap|g" "$UNIT_GENERATOR" >"$dir/unit-generator"
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chmod +x "$dir/env-generator" "$dir/unit-generator"
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sed "s|$ENV_GENERATOR|$dir/env-generator|g" "$PROFILE" >"$dir/profile"
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envbin=$(command -v env)
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case="setup"
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for g in env-generator unit-generator; do
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if grep -q '/run/hive/memory-max-bytes' "$dir/$g"; then fail "$g still names /run/hive after the rewrite"; fi
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if ! grep -qF "$cap" "$dir/$g"; then fail "the rewrite did not reach $g's read"; fi
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done
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if ! grep -qF "$dir/env-generator" "$dir/profile"; then fail "the snippet does not call the rewritten generator"; fi
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if ! printf '%s\n' "$EXTRA_INIT" | grep -qxF '. /etc/hyperhive/memory-cap.sh'; then
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fail "/etc/set-environment does not source the snippet"
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fi
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# check <description> <expected BUN_JSC_forceRAMSize or ""> <expected MemoryHigh or "">
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check() {
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case=$1
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count=$((count + 1))
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local want_env=${2:+BUN_JSC_forceRAMSize=$2} want_high=$3 got
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got=$(env -i "$dir/env-generator")
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if [ "$got" != "$want_env" ]; then
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fail "environment generator printed:"$'\n'"$got"$'\n'"wanted:"$'\n'"$want_env"
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fi
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local out=$dir/generator-out
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rm -rf "$out"
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mkdir -p "$out/normal" "$out/early" "$out/late"
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env -i "$dir/unit-generator" "$out/normal" "$out/early" "$out/late"
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local dropin=$out/normal/hive-subagent-daemon.service.d/50-memory-high.conf
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if [ -z "$want_high" ]; then
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got=$(find "$out" -type f)
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if [ -n "$got" ]; then fail "unit generator wrote:"$'\n'"$got"; fi
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else
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got=$(cat "$dropin" 2>&1)
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if [ "$got" != "[Service]"$'\n'"MemoryHigh=$want_high" ]; then
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fail "unit generator's drop-in:"$'\n'"$got"
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fi
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fi
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local sh
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for sh in $SHELLS; do
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# Only what the snippet exported reaches the child's environment. No PATH:
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# the snippet must not need one.
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got=$(env -i "$sh" -c ". '$dir/profile'; exec '$envbin'" | grep -E '^(BUN_|LD_PRELOAD=|__hyperhive)')
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if [ "$got" != "$want_env" ]; then
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fail "$sh: a child of the sourcing shell saw:"$'\n'"$got"
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fi
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done
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}
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printf '8589934592\n' >"$cap"
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check "an 8G cap" 6442450944 5726623061
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printf '4294967296' >"$cap"
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check "a line without a newline is kept" 3221225472 2863311530
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printf '4294967296\nLD_PRELOAD=/x\n' >"$cap"
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check "only the first line is read" 3221225472 2863311530
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printf '8G\n' >"$cap"
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check "a size with a suffix is ignored" "" ""
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printf '0123\n' >"$cap"
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check "a leading zero is ignored" "" ""
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printf '1234567890123456\n' >"$cap"
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check "sixteen digits are ignored" "" ""
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: >"$cap"
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check "an empty file" "" ""
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rm -f "$cap"
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check "no file" "" ""
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echo "$count cases, $failures failed"
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[ "$failures" -eq 0 ]
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