399 lines
14 KiB
Rust
399 lines
14 KiB
Rust
use pyo3::prelude::*;
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pub mod config;
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pub mod logging;
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use std::collections::HashMap;
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pub mod core;
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pub mod metrics;
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pub mod middleware;
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pub mod openai_api_types;
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pub mod policies;
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pub mod routers;
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pub mod server;
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pub mod service_discovery;
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pub mod tree;
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use crate::metrics::PrometheusConfig;
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#[pyclass(eq)]
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#[derive(Clone, PartialEq, Debug)]
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pub enum PolicyType {
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Random,
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RoundRobin,
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CacheAware,
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PowerOfTwo,
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}
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#[pyclass]
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#[derive(Debug, Clone, PartialEq)]
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struct Router {
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host: String,
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port: u16,
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worker_urls: Vec<String>,
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policy: PolicyType,
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worker_startup_timeout_secs: u64,
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worker_startup_check_interval: u64,
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cache_threshold: f32,
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balance_abs_threshold: usize,
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balance_rel_threshold: f32,
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eviction_interval_secs: u64,
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max_tree_size: usize,
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max_payload_size: usize,
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dp_aware: bool,
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api_key: Option<String>,
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log_dir: Option<String>,
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log_level: Option<String>,
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service_discovery: bool,
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selector: HashMap<String, String>,
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service_discovery_port: u16,
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service_discovery_namespace: Option<String>,
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prefill_selector: HashMap<String, String>,
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decode_selector: HashMap<String, String>,
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bootstrap_port_annotation: String,
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prometheus_port: Option<u16>,
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prometheus_host: Option<String>,
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request_timeout_secs: u64,
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request_id_headers: Option<Vec<String>>,
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pd_disaggregation: bool,
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prefill_urls: Option<Vec<(String, Option<u16>)>>,
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decode_urls: Option<Vec<String>>,
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prefill_policy: Option<PolicyType>,
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decode_policy: Option<PolicyType>,
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max_concurrent_requests: usize,
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cors_allowed_origins: Vec<String>,
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// Retry configuration
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retry_max_retries: u32,
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retry_initial_backoff_ms: u64,
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retry_max_backoff_ms: u64,
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retry_backoff_multiplier: f32,
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retry_jitter_factor: f32,
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disable_retries: bool,
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// Circuit breaker configuration
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cb_failure_threshold: u32,
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cb_success_threshold: u32,
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cb_timeout_duration_secs: u64,
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cb_window_duration_secs: u64,
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disable_circuit_breaker: bool,
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}
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impl Router {
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/// Convert PyO3 Router to RouterConfig
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pub fn to_router_config(&self) -> config::ConfigResult<config::RouterConfig> {
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use config::{
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DiscoveryConfig, MetricsConfig, PolicyConfig as ConfigPolicyConfig, RoutingMode,
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};
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// Convert policy helper function
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let convert_policy = |policy: &PolicyType| -> ConfigPolicyConfig {
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match policy {
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PolicyType::Random => ConfigPolicyConfig::Random,
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PolicyType::RoundRobin => ConfigPolicyConfig::RoundRobin,
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PolicyType::CacheAware => ConfigPolicyConfig::CacheAware {
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cache_threshold: self.cache_threshold,
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balance_abs_threshold: self.balance_abs_threshold,
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balance_rel_threshold: self.balance_rel_threshold,
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eviction_interval_secs: self.eviction_interval_secs,
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max_tree_size: self.max_tree_size,
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},
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PolicyType::PowerOfTwo => ConfigPolicyConfig::PowerOfTwo {
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load_check_interval_secs: 5, // Default value
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},
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}
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};
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// Determine routing mode
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let mode = if self.pd_disaggregation {
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RoutingMode::PrefillDecode {
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prefill_urls: self.prefill_urls.clone().unwrap_or_default(),
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decode_urls: self.decode_urls.clone().unwrap_or_default(),
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prefill_policy: self.prefill_policy.as_ref().map(convert_policy),
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decode_policy: self.decode_policy.as_ref().map(convert_policy),
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}
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} else {
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RoutingMode::Regular {
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worker_urls: self.worker_urls.clone(),
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}
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};
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// Convert main policy
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let policy = convert_policy(&self.policy);
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// Service discovery configuration
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let discovery = if self.service_discovery {
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Some(DiscoveryConfig {
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enabled: true,
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namespace: self.service_discovery_namespace.clone(),
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port: self.service_discovery_port,
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check_interval_secs: 60,
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selector: self.selector.clone(),
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prefill_selector: self.prefill_selector.clone(),
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decode_selector: self.decode_selector.clone(),
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bootstrap_port_annotation: self.bootstrap_port_annotation.clone(),
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})
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} else {
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None
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};
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// Metrics configuration
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let metrics = match (self.prometheus_port, self.prometheus_host.as_ref()) {
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(Some(port), Some(host)) => Some(MetricsConfig {
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port,
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host: host.clone(),
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}),
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_ => None,
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};
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Ok(config::RouterConfig {
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mode,
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policy,
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host: self.host.clone(),
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port: self.port,
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max_payload_size: self.max_payload_size,
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request_timeout_secs: self.request_timeout_secs,
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worker_startup_timeout_secs: self.worker_startup_timeout_secs,
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worker_startup_check_interval_secs: self.worker_startup_check_interval,
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dp_aware: self.dp_aware,
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api_key: self.api_key.clone(),
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discovery,
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metrics,
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log_dir: self.log_dir.clone(),
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log_level: self.log_level.clone(),
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request_id_headers: self.request_id_headers.clone(),
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max_concurrent_requests: self.max_concurrent_requests,
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cors_allowed_origins: self.cors_allowed_origins.clone(),
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retry: config::RetryConfig {
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max_retries: self.retry_max_retries,
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initial_backoff_ms: self.retry_initial_backoff_ms,
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max_backoff_ms: self.retry_max_backoff_ms,
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backoff_multiplier: self.retry_backoff_multiplier,
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jitter_factor: self.retry_jitter_factor,
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},
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circuit_breaker: config::CircuitBreakerConfig {
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failure_threshold: self.cb_failure_threshold,
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success_threshold: self.cb_success_threshold,
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timeout_duration_secs: self.cb_timeout_duration_secs,
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window_duration_secs: self.cb_window_duration_secs,
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},
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disable_retries: false,
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disable_circuit_breaker: false,
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})
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}
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}
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#[pymethods]
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impl Router {
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#[new]
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#[pyo3(signature = (
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worker_urls,
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policy = PolicyType::RoundRobin,
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host = String::from("127.0.0.1"),
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port = 3001,
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worker_startup_timeout_secs = 300,
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worker_startup_check_interval = 10,
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cache_threshold = 0.50,
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balance_abs_threshold = 32,
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balance_rel_threshold = 1.0001,
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eviction_interval_secs = 60,
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max_tree_size = 2usize.pow(24),
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max_payload_size = 256 * 1024 * 1024, // 256MB default for large batches
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dp_aware = false,
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api_key = None,
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log_dir = None,
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log_level = None,
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service_discovery = false,
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selector = HashMap::new(),
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service_discovery_port = 80,
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service_discovery_namespace = None,
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prefill_selector = HashMap::new(),
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decode_selector = HashMap::new(),
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bootstrap_port_annotation = String::from("sglang.ai/bootstrap-port"),
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prometheus_port = None,
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prometheus_host = None,
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request_timeout_secs = 600, // Add configurable request timeout
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request_id_headers = None, // Custom request ID headers
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pd_disaggregation = false, // New flag for PD mode
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prefill_urls = None,
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decode_urls = None,
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prefill_policy = None,
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decode_policy = None,
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max_concurrent_requests = 64,
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cors_allowed_origins = vec![],
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// Retry defaults
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retry_max_retries = 3,
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retry_initial_backoff_ms = 100,
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retry_max_backoff_ms = 10_000,
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retry_backoff_multiplier = 2.0,
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retry_jitter_factor = 0.1,
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disable_retries = false,
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// Circuit breaker defaults
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cb_failure_threshold = 5,
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cb_success_threshold = 2,
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cb_timeout_duration_secs = 30,
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cb_window_duration_secs = 60,
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disable_circuit_breaker = false,
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))]
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fn new(
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worker_urls: Vec<String>,
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policy: PolicyType,
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host: String,
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port: u16,
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worker_startup_timeout_secs: u64,
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worker_startup_check_interval: u64,
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cache_threshold: f32,
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balance_abs_threshold: usize,
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balance_rel_threshold: f32,
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eviction_interval_secs: u64,
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max_tree_size: usize,
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max_payload_size: usize,
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dp_aware: bool,
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api_key: Option<String>,
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log_dir: Option<String>,
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log_level: Option<String>,
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service_discovery: bool,
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selector: HashMap<String, String>,
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service_discovery_port: u16,
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service_discovery_namespace: Option<String>,
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prefill_selector: HashMap<String, String>,
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decode_selector: HashMap<String, String>,
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bootstrap_port_annotation: String,
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prometheus_port: Option<u16>,
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prometheus_host: Option<String>,
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request_timeout_secs: u64,
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request_id_headers: Option<Vec<String>>,
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pd_disaggregation: bool,
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prefill_urls: Option<Vec<(String, Option<u16>)>>,
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decode_urls: Option<Vec<String>>,
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prefill_policy: Option<PolicyType>,
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decode_policy: Option<PolicyType>,
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max_concurrent_requests: usize,
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cors_allowed_origins: Vec<String>,
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retry_max_retries: u32,
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retry_initial_backoff_ms: u64,
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retry_max_backoff_ms: u64,
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retry_backoff_multiplier: f32,
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retry_jitter_factor: f32,
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disable_retries: bool,
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cb_failure_threshold: u32,
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cb_success_threshold: u32,
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cb_timeout_duration_secs: u64,
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cb_window_duration_secs: u64,
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disable_circuit_breaker: bool,
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) -> PyResult<Self> {
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Ok(Router {
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host,
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port,
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worker_urls,
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policy,
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worker_startup_timeout_secs,
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worker_startup_check_interval,
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cache_threshold,
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balance_abs_threshold,
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balance_rel_threshold,
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eviction_interval_secs,
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max_tree_size,
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max_payload_size,
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dp_aware,
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api_key,
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log_dir,
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log_level,
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service_discovery,
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selector,
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service_discovery_port,
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service_discovery_namespace,
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prefill_selector,
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decode_selector,
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bootstrap_port_annotation,
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prometheus_port,
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prometheus_host,
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request_timeout_secs,
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request_id_headers,
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pd_disaggregation,
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prefill_urls,
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decode_urls,
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prefill_policy,
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decode_policy,
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max_concurrent_requests,
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cors_allowed_origins,
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retry_max_retries,
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retry_initial_backoff_ms,
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retry_max_backoff_ms,
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retry_backoff_multiplier,
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retry_jitter_factor,
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disable_retries,
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cb_failure_threshold,
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cb_success_threshold,
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cb_timeout_duration_secs,
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cb_window_duration_secs,
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disable_circuit_breaker,
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})
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}
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fn start(&self) -> PyResult<()> {
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// Convert to RouterConfig and validate
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let router_config = self.to_router_config().map_err(|e| {
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pyo3::exceptions::PyValueError::new_err(format!("Configuration error: {}", e))
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})?;
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// Validate the configuration
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router_config.validate().map_err(|e| {
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pyo3::exceptions::PyValueError::new_err(format!(
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"Configuration validation failed: {}",
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e
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))
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})?;
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// Create service discovery config if enabled
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let service_discovery_config = if self.service_discovery {
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Some(service_discovery::ServiceDiscoveryConfig {
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enabled: true,
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selector: self.selector.clone(),
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check_interval: std::time::Duration::from_secs(60),
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port: self.service_discovery_port,
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namespace: self.service_discovery_namespace.clone(),
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pd_mode: self.pd_disaggregation,
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prefill_selector: self.prefill_selector.clone(),
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decode_selector: self.decode_selector.clone(),
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bootstrap_port_annotation: self.bootstrap_port_annotation.clone(),
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})
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} else {
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None
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};
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// Create Prometheus config if enabled
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let prometheus_config = Some(PrometheusConfig {
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port: self.prometheus_port.unwrap_or(29000),
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host: self
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.prometheus_host
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.clone()
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.unwrap_or_else(|| "127.0.0.1".to_string()),
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});
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// Use tokio runtime instead of actix-web System for better compatibility
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let runtime = tokio::runtime::Runtime::new()
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.map_err(|e| pyo3::exceptions::PyRuntimeError::new_err(e.to_string()))?;
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// Block on the async startup function
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runtime.block_on(async move {
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server::startup(server::ServerConfig {
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host: self.host.clone(),
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port: self.port,
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router_config,
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max_payload_size: self.max_payload_size,
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log_dir: self.log_dir.clone(),
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log_level: self.log_level.clone(),
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service_discovery_config,
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prometheus_config,
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request_timeout_secs: self.request_timeout_secs,
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request_id_headers: self.request_id_headers.clone(),
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})
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.await
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.map_err(|e| pyo3::exceptions::PyRuntimeError::new_err(e.to_string()))
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})
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}
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}
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#[pymodule]
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fn sglang_router_rs(m: &Bound<'_, PyModule>) -> PyResult<()> {
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m.add_class::<PolicyType>()?;
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m.add_class::<Router>()?;
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Ok(())
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}
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