risingwave_frontend/

lib.rs

// Copyright 2024 RisingWave Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#![feature(async_closure)]
#![allow(clippy::derive_partial_eq_without_eq)]
#![feature(map_try_insert)]
#![feature(negative_impls)]
#![feature(coroutines)]
#![feature(proc_macro_hygiene, stmt_expr_attributes)]
#![feature(trait_alias)]
#![feature(extract_if)]
#![feature(if_let_guard)]
#![feature(let_chains)]
#![feature(assert_matches)]
#![feature(box_patterns)]
#![feature(macro_metavar_expr)]
#![feature(min_specialization)]
#![feature(extend_one)]
#![feature(type_alias_impl_trait)]
#![feature(impl_trait_in_assoc_type)]
#![feature(result_flattening)]
#![feature(error_generic_member_access)]
#![feature(iterator_try_collect)]
#![feature(used_with_arg)]
#![feature(try_trait_v2)]
#![recursion_limit = "256"]

#[cfg(test)]
risingwave_expr_impl::enable!();

#[macro_use]
mod catalog;

use std::collections::HashSet;
use std::time::Duration;

pub use catalog::TableCatalog;
mod binder;
pub use binder::{bind_data_type, Binder};
pub mod expr;
pub mod handler;
pub use handler::PgResponseStream;
mod observer;
pub mod optimizer;
pub use optimizer::{Explain, OptimizerContext, OptimizerContextRef, PlanRef};
mod planner;
use pgwire::net::TcpKeepalive;
pub use planner::Planner;
mod scheduler;
pub mod session;
mod stream_fragmenter;
use risingwave_common::config::{MetricLevel, OverrideConfig};
use risingwave_common::util::meta_addr::MetaAddressStrategy;
use risingwave_common::util::resource_util::memory::system_memory_available_bytes;
use risingwave_common::util::tokio_util::sync::CancellationToken;
pub use stream_fragmenter::build_graph;
mod utils;
pub use utils::{explain_stream_graph, WithOptions, WithOptionsSecResolved};
pub(crate) mod error;
mod meta_client;
pub mod test_utils;
mod user;

pub mod health_service;
mod monitor;

pub mod rpc;
mod telemetry;

use std::ffi::OsString;
use std::iter;
use std::sync::Arc;

use clap::Parser;
use pgwire::pg_server::pg_serve;
use session::SessionManagerImpl;

/// Command-line arguments for frontend-node.
#[derive(Parser, Clone, Debug, OverrideConfig)]
#[command(
    version,
    about = "The stateless proxy that parses SQL queries and performs planning and optimizations of query jobs"
)]
pub struct FrontendOpts {
    // TODO: rename to listen_addr and separate out the port.
    /// The address that this service listens to.
    /// Usually the localhost + desired port.
    #[clap(long, env = "RW_LISTEN_ADDR", default_value = "0.0.0.0:4566")]
    pub listen_addr: String,

    /// The amount of time with no network activity after which the server will send a
    /// TCP keepalive message to the client.
    #[clap(long, env = "RW_TCP_KEEPALIVE_IDLE_SECS", default_value = "300")]
    pub tcp_keepalive_idle_secs: usize,

    /// The address for contacting this instance of the service.
    /// This would be synonymous with the service's "public address"
    /// or "identifying address".
    /// Optional, we will use `listen_addr` if not specified.
    #[clap(long, env = "RW_ADVERTISE_ADDR")]
    pub advertise_addr: Option<String>,

    /// The address via which we will attempt to connect to a leader meta node.
    #[clap(long, env = "RW_META_ADDR", default_value = "http://127.0.0.1:5690")]
    pub meta_addr: MetaAddressStrategy,

    /// We will start a http server at this address via `MetricsManager`.
    /// Then the prometheus instance will poll the metrics from this address.
    #[clap(
        long,
        env = "RW_PROMETHEUS_LISTENER_ADDR",
        default_value = "127.0.0.1:2222"
    )]
    pub prometheus_listener_addr: String,

    #[clap(
        long,
        alias = "health-check-listener-addr",
        env = "RW_HEALTH_CHECK_LISTENER_ADDR",
        default_value = "127.0.0.1:6786"
    )]
    pub frontend_rpc_listener_addr: String,

    /// The path of `risingwave.toml` configuration file.
    ///
    /// If empty, default configuration values will be used.
    ///
    /// Note that internal system parameters should be defined in the configuration file at
    /// [`risingwave_common::config`] instead of command line arguments.
    #[clap(long, env = "RW_CONFIG_PATH", default_value = "")]
    pub config_path: String,

    /// Used for control the metrics level, similar to log level.
    ///
    /// level = 0: disable metrics
    /// level > 0: enable metrics
    #[clap(long, hide = true, env = "RW_METRICS_LEVEL")]
    #[override_opts(path = server.metrics_level)]
    pub metrics_level: Option<MetricLevel>,

    #[clap(long, hide = true, env = "ENABLE_BARRIER_READ")]
    #[override_opts(path = batch.enable_barrier_read)]
    pub enable_barrier_read: Option<bool>,

    /// The path of the temp secret file directory.
    #[clap(
        long,
        hide = true,
        env = "RW_TEMP_SECRET_FILE_DIR",
        default_value = "./secrets"
    )]
    pub temp_secret_file_dir: String,

    /// Total available memory for the frontend node in bytes. Used for batch computing.
    #[clap(long, env = "RW_FRONTEND_TOTAL_MEMORY_BYTES", default_value_t = default_frontend_total_memory_bytes())]
    pub frontend_total_memory_bytes: usize,
}

impl risingwave_common::opts::Opts for FrontendOpts {
    fn name() -> &'static str {
        "frontend"
    }

    fn meta_addr(&self) -> MetaAddressStrategy {
        self.meta_addr.clone()
    }
}

impl Default for FrontendOpts {
    fn default() -> Self {
        FrontendOpts::parse_from(iter::empty::<OsString>())
    }
}

use std::future::Future;
use std::pin::Pin;

use pgwire::pg_protocol::TlsConfig;

use crate::session::SESSION_MANAGER;

/// Start frontend
pub fn start(
    opts: FrontendOpts,
    shutdown: CancellationToken,
) -> Pin<Box<dyn Future<Output = ()> + Send>> {
    // WARNING: don't change the function signature. Making it `async fn` will cause
    // slow compile in release mode.
    Box::pin(async move {
        let listen_addr = opts.listen_addr.clone();
        let tcp_keepalive =
            TcpKeepalive::new().with_time(Duration::from_secs(opts.tcp_keepalive_idle_secs as _));

        let session_mgr = Arc::new(SessionManagerImpl::new(opts).await.unwrap());
        SESSION_MANAGER.get_or_init(|| session_mgr.clone());
        let redact_sql_option_keywords = Arc::new(
            session_mgr
                .env()
                .batch_config()
                .redact_sql_option_keywords
                .iter()
                .map(|s| s.to_lowercase())
                .collect::<HashSet<_>>(),
        );

        pg_serve(
            &listen_addr,
            tcp_keepalive,
            session_mgr.clone(),
            TlsConfig::new_default(),
            Some(redact_sql_option_keywords),
            shutdown,
        )
        .await
        .unwrap()
    })
}

pub fn default_frontend_total_memory_bytes() -> usize {
    system_memory_available_bytes()
}