bef9d401a4
tuwunel 1.9.4 exports no metrics. The host collector gets an httpcheck receiver on the gateway's /_matrix/client/versions (new services.hyperhive.otel.httpChecks, declared by hive-matrix), and a timer in the hive-matrix container pushes the database directory's size through the forwarder's OTLP port, as the attic cache-size unit does. The size step dereferences the state directory's symlink and pushes nothing for a result under 4096 bytes.
74 lines
2.5 KiB
Shell
74 lines
2.5 KiB
Shell
# Cases for ./database-size-push.nix. The directory is reached through a
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# symlink, as a dynamic user's state directory is. `curl` is a stub that
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# records the payload and the URL it is given.
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set -uo pipefail
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failures=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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root=$(mktemp -d)
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mkdir -p "$root/bin" "$root/private/tuwunel"
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head -c 100000 /dev/zero >"$root/private/tuwunel/db"
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ln -s "$root/private/tuwunel" "$root/tuwunel"
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cat >"$root/bin/curl" <<STUB
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#!$BASH
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printf '%s\n' "\$*" >"$root/curl.args"
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cat >"$root/curl.payload"
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STUB
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chmod +x "$root/bin/curl"
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# Runs the script for \$1, returns its status; stdout and stderr land in files.
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run() {
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rm -f "$root/curl.args" "$root/curl.payload"
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sed "s|@DIR@|$1|" "$SCRIPT_LINK" >"$root/script.sh"
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PATH="$root/bin:$PATH" bash "$root/script.sh" >"$root/out" 2>"$root/err"
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}
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case="a symlinked directory reports the target's size"
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want=$(du --summarize --bytes "$root/private/tuwunel/" | cut -f1)
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link=$(du --summarize --bytes "$root/tuwunel" | cut -f1)
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[ "$want" -ge 100000 ] || fail "fixture target is $want bytes"
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[ "$link" -lt 4096 ] || fail "fixture link measures $link bytes, so it does not tell the cases apart"
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if run "$root/tuwunel"; then
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grep -q "\"asInt\":\"$want\"" "$root/curl.payload" || fail "payload is $(cat "$root/curl.payload"), want asInt $want"
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grep -q 'hyperhive.matrix.database_bytes' "$root/curl.payload" || fail "no metric name in the payload"
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grep -q '127.0.0.1:8906/v1/metrics' "$root/curl.args" || fail "wrong url: $(cat "$root/curl.args")"
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else
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fail "the script failed: $(cat "$root/err")"
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fi
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case="a real directory reports its own size"
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if run "$root/private/tuwunel"; then
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grep -q "\"asInt\":\"$want\"" "$root/curl.payload" || fail "payload is $(cat "$root/curl.payload"), want asInt $want"
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else
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fail "the script failed: $(cat "$root/err")"
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fi
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# `du` stub answering a link-sized number, as an old command line would.
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case="an implausibly small size warns and pushes nothing"
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cat >"$root/bin/du" <<STUB
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#!$BASH
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printf '15\t%s\n' "\${@: -1}"
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STUB
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chmod +x "$root/bin/du"
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if run "$root/tuwunel"; then
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[ ! -e "$root/curl.payload" ] || fail "pushed $(cat "$root/curl.payload")"
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grep -q 'warning' "$root/err" || fail "no warning: $(cat "$root/err")"
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else
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fail "the script failed: $(cat "$root/err")"
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fi
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rm "$root/bin/du"
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case="a missing directory fails and pushes nothing"
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if run "$root/absent"; then
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fail "the script succeeded"
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fi
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[ ! -e "$root/curl.payload" ] || fail "pushed on a missing directory"
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[ "$failures" -eq 0 ] || exit 1
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echo "all cases passed"
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