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4 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
| 4498baffe4 | |||
| fe7b2822c5 | |||
| 0179ca52ec | |||
| 522187ddd1 |
@@ -148,7 +148,25 @@ rg_install() {
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mkdir -p /mnt/server/rust-link "${plugins}"
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mkdir -p /mnt/server/rust-link "${plugins}"
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install -m 755 "${work}/rust-link-sidecar" /mnt/server/rust-link/rust-link-sidecar
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install -m 755 "${work}/rust-link-sidecar" /mnt/server/rust-link/rust-link-sidecar
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install -m 755 "${work}/with-sidecar.sh" /mnt/server/rust-link/with-sidecar.sh
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install -m 755 "${work}/with-sidecar.sh" /mnt/server/rust-link/with-sidecar.sh
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install -m 644 "${work}/runicgateway-rust-plugin/RunicGateway.cs" "${plugins}/RunicGateway.cs"
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# Every .cs the release's manifest lists: the bridge, and the helpers shipped
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# beside it (docs/modules/rust/PLAN_FIXES.md D182 - today RunicGatewayZones.cs,
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# the ZoneManager helper), each checked against its own sha256 first. A name
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# is written into the plugins directory, so only a plain <Name>.cs is taken.
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local file sha
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for file in $(jq -r '.files | keys[]' "${manifest}"); do
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case "${file}" in
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*[!A-Za-z0-9_.]* | .* | *..* | *[!s] ) echo "Runic Gateway: the plugin manifest lists ${file}, which is not a plugin file - refusing it"; return 1 ;;
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esac
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[ "${file%.cs}" != "${file}" ] || { echo "Runic Gateway: the plugin manifest lists ${file}, which is not a .cs file - refusing it"; return 1; }
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[ -f "${work}/runicgateway-rust-plugin/${file}" ] || { echo "Runic Gateway: the plugin manifest lists ${file} but the tarball has none"; return 1; }
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sha="$(jq -r --arg f "${file}" '.files[$f]' "${manifest}")"
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echo "${sha} ${work}/runicgateway-rust-plugin/${file}" | sha256sum -c --quiet - \
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|| { echo "Runic Gateway: ${file} does not match the plugin manifest's sha256 - refusing it"; return 1; }
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done
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[ -f "${work}/runicgateway-rust-plugin/RunicGateway.cs" ] || { echo "Runic Gateway: the plugin tarball has no RunicGateway.cs"; return 1; }
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for file in $(jq -r '.files | keys[]' "${manifest}"); do
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install -m 644 "${work}/runicgateway-rust-plugin/${file}" "${plugins}/${file}"
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done
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# What is installed, readable from the panel's file manager.
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# What is installed, readable from the panel's file manager.
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jq --arg framework "${FRAMEWORK}" --arg installed "$(date -u +%Y-%m-%dT%H:%M:%SZ)" \
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jq --arg framework "${FRAMEWORK}" --arg installed "$(date -u +%Y-%m-%dT%H:%M:%SZ)" \
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'{ bundle, protocol, framework: $framework, installed: $installed,
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'{ bundle, protocol, framework: $framework, installed: $installed,
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@@ -101,11 +101,9 @@ use tracing_subscriber::EnvFilter;
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/// for the reload to announce itself, and **puts the old files back automatically** if it does
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/// for the reload to announce itself, and **puts the old files back automatically** if it does
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/// not.
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/// not.
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///
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///
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/// Two things about that reach this process. The write is the only route here that causes a write
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/// The write is the only route here that causes a write on the game host. Since protocol 13 its
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/// on the game host, and it is the only one whose reply routinely spends seconds rather than
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/// reply comes back as soon as the files are on disk, marked `pending`; how the reload went follows
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/// milliseconds — the plugin holds the correlation open across a reload and, at worst, across a
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/// later as a `config.outcome` event, which this process files and feeds like any other.
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/// rollback as well. `web::CONFIG_RELOAD_WINDOW` is that budget, mirrored from the plugin, and a
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/// test asserts the pairing rather than trusting it.
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///
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///
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/// # Protocol 6 — first-party clans
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/// # Protocol 6 — first-party clans
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///
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///
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@@ -165,10 +163,19 @@ use tracing_subscriber::EnvFilter;
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/// keeps it, and positions are asked for while somebody is looking and never touch the database
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/// keeps it, and positions are asked for while somebody is looking and never touch the database
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/// (D111). Which layer a viewer may see is decided on the website, never here.
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/// (D111). Which layer a viewer may see is decided on the website, never here.
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///
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///
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/// # Protocol 13 — the first player walk's fixes
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///
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/// Opened by the configuration save (the module's PLAN_FIXES.md F9, D177): `POST /config/write`
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/// answers `pending` at once instead of holding the RPC across a reload, and the outcome arrives
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/// as a `config.outcome` event. Nothing new to route — an event is filed and fed by its `type`,
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/// whatever its kind — so what changes here is what no longer has to fit: the reload window that
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/// had to sit inside [`rpc::REPLY_TIMEOUT`] is gone.
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///
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/// `docs/rust-link/PROTOCOL.md` is the specification — §8 the read path, §9 identity, §10 the
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/// `docs/rust-link/PROTOCOL.md` is the specification — §8 the read path, §9 identity, §10 the
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/// mirror, §11 configuration, §12 clans, §13 the raid frame, §14 the leases, §15 the world verbs,
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/// mirror, §11 configuration, §12 clans, §13 the raid frame, §14 the leases, §15 the world verbs,
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/// §16 the rewards, §17 the map, §18 the optional mods; this constant is one of its four declaration sites.
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/// §16 the rewards, §17 the map, §18 the optional mods, §19 the walk's fixes; this constant is one
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pub const PROTOCOL_VERSION: u32 = 12;
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/// of its four declaration sites.
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pub const PROTOCOL_VERSION: u32 = 13;
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fn main() -> anyhow::Result<()> {
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fn main() -> anyhow::Result<()> {
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let args = match cli::parse(std::env::args().skip(1)) {
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let args = match cli::parse(std::env::args().skip(1)) {
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@@ -102,9 +102,8 @@ pub async fn serve(addr: &str, state: AppState) -> anyhow::Result<()> {
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// an operator edited over SSH and the website then overwrote.
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// an operator edited over SSH and the website then overwrote.
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.route("/config/files", get(config_files))
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.route("/config/files", get(config_files))
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.route("/config/file", get(config_file))
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.route("/config/file", get(config_file))
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// The only route on this sidecar that causes a WRITE on the game host, and the only one
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// The only route on this sidecar that causes a WRITE on the game host. It answers once the
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// whose reply can take most of the RPC budget: the plugin holds it open across a reload
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// files are on disk; the reload's outcome follows as a `config.outcome` event (protocol 13).
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// and, at worst, across a rollback as well. See `CONFIG_RELOAD_WINDOW`.
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.route("/config/write", post(config_write))
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.route("/config/write", post(config_write))
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// Protocol 8 (the module's PLAN.md §27): an event borrowing a value and giving it back.
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// Protocol 8 (the module's PLAN.md §27): an event borrowing a value and giving it back.
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// Three correlated round trips, and the sidecar knows nothing about any of them — not
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// Three correlated round trips, and the sidecar knows nothing about any of them — not
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@@ -694,19 +693,14 @@ async fn config_file(State(st): State<AppState>, Query(q): Query<ConfigPathQuery
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respond(st.rpc.call(&st.game, command, &req_id).await)
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respond(st.rpc.call(&st.game, command, &req_id).await)
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}
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}
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/// The window the plugin gives a reload to announce itself, mirrored here from
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/// `ConfigReloadWindowSeconds` in `overlay/oxide/plugins/RunicGateway.cs`.
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///
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/// It is duplicated rather than negotiated because the two numbers are a *pairing*, like the
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/// protocol version: the plugin owns the behaviour and this end owns the budget it has to fit in.
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/// The test below is what keeps them honest — a worst-case write is two windows, and a
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/// [`REPLY_TIMEOUT`](crate::rpc::REPLY_TIMEOUT) that does not cover both would abandon the caller
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/// precisely when a rollback had just saved them, leaving the website to report a timeout over a
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/// server that is perfectly healthy.
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pub const CONFIG_RELOAD_WINDOW: Duration = Duration::from_secs(4);
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/// Replace a set of configuration files and reload whatever owns them.
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/// Replace a set of configuration files and reload whatever owns them.
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///
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///
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/// Since protocol 13 the reply does not wait for the reload. The plugin answers once the files are
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/// on disk (`pending: true`, a `writeId`, and the `ceilingMs` it will wait), and reports the reload
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/// as a `config.outcome` event when it settles. Protocol 12 held this RPC across the reload, which
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/// forced the plugin's window under [`REPLY_TIMEOUT`](crate::rpc::REPLY_TIMEOUT) — and a cold
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/// compile outlasted it and had a valid edit rolled back (the module's PLAN_FIXES.md F9).
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///
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/// Opaque body, exactly as `/permissions/sync`: `cmd` and `reqId` are written over whatever the
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/// Opaque body, exactly as `/permissions/sync`: `cmd` and `reqId` are written over whatever the
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/// caller sent, and nothing else about the object is read here. What the website sends is whole
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/// caller sent, and nothing else about the object is read here. What the website sends is whole
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/// file *text* rather than a key and a value (D35), so there is nothing on this hop that could
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/// file *text* rather than a key and a value (D35), so there is nothing on this hop that could
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@@ -750,16 +744,15 @@ async fn config_write(State(st): State<AppState>, Json(body): Json<Value>) -> Re
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let result = st.rpc.call(&st.game, command, &req_id).await;
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let result = st.rpc.call(&st.game, command, &req_id).await;
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if matches!(result, Err(RpcError::Timeout)) {
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if matches!(result, Err(RpcError::Timeout)) {
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// A bare `504` on a route that writes reads as "did my change land, and is the plugin
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// A bare `504` on a route that writes reads as "did my change land?" — and unlike every
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// still up?" — and unlike every other timeout on this sidecar, that question has a good
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// other timeout on this sidecar, that question has a good answer. The plugin writes a
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// answer. The plugin writes a whole set or restores a whole set, never half of either, so
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// whole set or none of it, and restores a whole set or none of it, so a re-read settles
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// a re-read settles it; and a write that is still in flight is most likely inside the
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// it. Since protocol 13 the reply no longer waits for a reload, so this is a slow host or
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// rollback this window pays for.
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// a busy main thread, not a rollback in progress.
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return (
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return (
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StatusCode::GATEWAY_TIMEOUT,
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StatusCode::GATEWAY_TIMEOUT,
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Json(json!({
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Json(json!({
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"error": "the plugin did not report within the write budget",
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"error": "the plugin did not report within the write budget",
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"reloadWindowSeconds": CONFIG_RELOAD_WINDOW.as_secs(),
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"hint": "re-read the files: the plugin writes the whole set or restores it",
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"hint": "re-read the files: the plugin writes the whole set or restores it",
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})),
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})),
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)
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)
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@@ -1037,25 +1030,6 @@ mod tests {
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assert_eq!(command["grants"], json!([]));
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assert_eq!(command["grants"], json!([]));
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}
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}
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/// A command larger than the game link's own line cap is refused here, where the caller learns
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/// why. Forwarded, it would be discarded by both ends without a word and present as a `504`.
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/// The pairing in `CONFIG_RELOAD_WINDOW`'s own words, asserted rather than trusted.
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///
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/// The worst path through one configuration write is two windows — wait for the edited
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/// plugin's reload, give up, restore the files, reload again — plus the write, the reads and
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/// a line each way. If that does not fit inside the RPC timeout, the caller is abandoned at
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/// exactly the moment the rollback saved it, and the website reports a timeout over a server
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/// that is healthy and has the old config back.
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#[test]
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fn a_rollback_fits_inside_the_rpc_budget() {
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let worst = CONFIG_RELOAD_WINDOW * 2;
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assert!(
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worst + Duration::from_secs(1) <= crate::rpc::REPLY_TIMEOUT,
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"two reload windows ({worst:?}) plus a second of slack must fit in {:?}",
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crate::rpc::REPLY_TIMEOUT
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);
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}
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/// Protocol 8's routes cannot choose their own command or correlation id either, and they keep
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/// Protocol 8's routes cannot choose their own command or correlation id either, and they keep
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/// everything else the caller sent, unread.
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/// everything else the caller sent, unread.
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#[test]
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#[test]
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