telemt/src/api/runtime_stats.rs

572 lines
26 KiB
Rust

use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
use crate::config::ApiConfig;
use crate::stats::{MeWriterTeardownMode, Stats};
use crate::transport::upstream::IpPreference;
use crate::transport::UpstreamRouteKind;
use super::ApiShared;
use super::model::{
DcEndpointWriters, DcStatus, DcStatusData, MeWriterStatus, MeWritersData, MeWritersSummary,
MinimalAllData, MinimalAllPayload, MinimalDcPathData, MinimalMeRuntimeData,
MinimalQuarantineData, UpstreamDcStatus, UpstreamStatus, UpstreamSummaryData, UpstreamsData,
ZeroAllData, ZeroCodeCount, ZeroCoreData, ZeroDesyncData, ZeroMiddleProxyData, ZeroPoolData,
ZeroUpstreamData,
};
const FEATURE_DISABLED_REASON: &str = "feature_disabled";
const SOURCE_UNAVAILABLE_REASON: &str = "source_unavailable";
#[derive(Clone)]
pub(crate) struct MinimalCacheEntry {
pub(super) expires_at: Instant,
pub(super) payload: MinimalAllPayload,
pub(super) generated_at_epoch_secs: u64,
}
pub(super) fn build_zero_all_data(stats: &Stats, configured_users: usize) -> ZeroAllData {
let telemetry = stats.telemetry_policy();
let handshake_error_codes = stats
.get_me_handshake_error_code_counts()
.into_iter()
.map(|(code, total)| ZeroCodeCount { code, total })
.collect();
ZeroAllData {
generated_at_epoch_secs: now_epoch_secs(),
core: ZeroCoreData {
uptime_seconds: stats.uptime_secs(),
connections_total: stats.get_connects_all(),
connections_bad_total: stats.get_connects_bad(),
handshake_timeouts_total: stats.get_handshake_timeouts(),
configured_users,
telemetry_core_enabled: telemetry.core_enabled,
telemetry_user_enabled: telemetry.user_enabled,
telemetry_me_level: telemetry.me_level.to_string(),
},
upstream: build_zero_upstream_data(stats),
middle_proxy: ZeroMiddleProxyData {
keepalive_sent_total: stats.get_me_keepalive_sent(),
keepalive_failed_total: stats.get_me_keepalive_failed(),
keepalive_pong_total: stats.get_me_keepalive_pong(),
keepalive_timeout_total: stats.get_me_keepalive_timeout(),
rpc_proxy_req_signal_sent_total: stats.get_me_rpc_proxy_req_signal_sent_total(),
rpc_proxy_req_signal_failed_total: stats.get_me_rpc_proxy_req_signal_failed_total(),
rpc_proxy_req_signal_skipped_no_meta_total: stats
.get_me_rpc_proxy_req_signal_skipped_no_meta_total(),
rpc_proxy_req_signal_response_total: stats.get_me_rpc_proxy_req_signal_response_total(),
rpc_proxy_req_signal_close_sent_total: stats
.get_me_rpc_proxy_req_signal_close_sent_total(),
reconnect_attempt_total: stats.get_me_reconnect_attempts(),
reconnect_success_total: stats.get_me_reconnect_success(),
handshake_reject_total: stats.get_me_handshake_reject_total(),
handshake_error_codes,
reader_eof_total: stats.get_me_reader_eof_total(),
idle_close_by_peer_total: stats.get_me_idle_close_by_peer_total(),
route_drop_no_conn_total: stats.get_me_route_drop_no_conn(),
route_drop_channel_closed_total: stats.get_me_route_drop_channel_closed(),
route_drop_queue_full_total: stats.get_me_route_drop_queue_full(),
route_drop_queue_full_base_total: stats.get_me_route_drop_queue_full_base(),
route_drop_queue_full_high_total: stats.get_me_route_drop_queue_full_high(),
socks_kdf_strict_reject_total: stats.get_me_socks_kdf_strict_reject(),
socks_kdf_compat_fallback_total: stats.get_me_socks_kdf_compat_fallback(),
endpoint_quarantine_total: stats.get_me_endpoint_quarantine_total(),
kdf_drift_total: stats.get_me_kdf_drift_total(),
kdf_port_only_drift_total: stats.get_me_kdf_port_only_drift_total(),
hardswap_pending_reuse_total: stats.get_me_hardswap_pending_reuse_total(),
hardswap_pending_ttl_expired_total: stats.get_me_hardswap_pending_ttl_expired_total(),
single_endpoint_outage_enter_total: stats.get_me_single_endpoint_outage_enter_total(),
single_endpoint_outage_exit_total: stats.get_me_single_endpoint_outage_exit_total(),
single_endpoint_outage_reconnect_attempt_total: stats
.get_me_single_endpoint_outage_reconnect_attempt_total(),
single_endpoint_outage_reconnect_success_total: stats
.get_me_single_endpoint_outage_reconnect_success_total(),
single_endpoint_quarantine_bypass_total: stats
.get_me_single_endpoint_quarantine_bypass_total(),
single_endpoint_shadow_rotate_total: stats.get_me_single_endpoint_shadow_rotate_total(),
single_endpoint_shadow_rotate_skipped_quarantine_total: stats
.get_me_single_endpoint_shadow_rotate_skipped_quarantine_total(),
floor_mode_switch_total: stats.get_me_floor_mode_switch_total(),
floor_mode_switch_static_to_adaptive_total: stats
.get_me_floor_mode_switch_static_to_adaptive_total(),
floor_mode_switch_adaptive_to_static_total: stats
.get_me_floor_mode_switch_adaptive_to_static_total(),
},
pool: ZeroPoolData {
pool_swap_total: stats.get_pool_swap_total(),
pool_drain_active: stats.get_pool_drain_active(),
pool_force_close_total: stats.get_pool_force_close_total(),
pool_drain_soft_evict_total: stats.get_pool_drain_soft_evict_total(),
pool_drain_soft_evict_writer_total: stats.get_pool_drain_soft_evict_writer_total(),
pool_stale_pick_total: stats.get_pool_stale_pick_total(),
writer_removed_total: stats.get_me_writer_removed_total(),
writer_removed_unexpected_total: stats.get_me_writer_removed_unexpected_total(),
refill_triggered_total: stats.get_me_refill_triggered_total(),
refill_skipped_inflight_total: stats.get_me_refill_skipped_inflight_total(),
refill_failed_total: stats.get_me_refill_failed_total(),
writer_restored_same_endpoint_total: stats.get_me_writer_restored_same_endpoint_total(),
writer_restored_fallback_total: stats.get_me_writer_restored_fallback_total(),
teardown_attempt_total_normal: stats
.get_me_writer_teardown_attempt_total_by_mode(MeWriterTeardownMode::Normal),
teardown_attempt_total_hard_detach: stats
.get_me_writer_teardown_attempt_total_by_mode(MeWriterTeardownMode::HardDetach),
teardown_success_total_normal: stats
.get_me_writer_teardown_success_total(MeWriterTeardownMode::Normal),
teardown_success_total_hard_detach: stats
.get_me_writer_teardown_success_total(MeWriterTeardownMode::HardDetach),
teardown_timeout_total: stats.get_me_writer_teardown_timeout_total(),
teardown_escalation_total: stats.get_me_writer_teardown_escalation_total(),
teardown_noop_total: stats.get_me_writer_teardown_noop_total(),
teardown_cleanup_side_effect_failures_total: stats
.get_me_writer_cleanup_side_effect_failures_total_all(),
teardown_duration_count_total: stats
.get_me_writer_teardown_duration_count(MeWriterTeardownMode::Normal)
.saturating_add(
stats.get_me_writer_teardown_duration_count(MeWriterTeardownMode::HardDetach),
),
teardown_duration_sum_seconds_total: stats
.get_me_writer_teardown_duration_sum_seconds(MeWriterTeardownMode::Normal)
+ stats.get_me_writer_teardown_duration_sum_seconds(
MeWriterTeardownMode::HardDetach,
),
},
desync: ZeroDesyncData {
secure_padding_invalid_total: stats.get_secure_padding_invalid(),
desync_total: stats.get_desync_total(),
desync_full_logged_total: stats.get_desync_full_logged(),
desync_suppressed_total: stats.get_desync_suppressed(),
desync_frames_bucket_0: stats.get_desync_frames_bucket_0(),
desync_frames_bucket_1_2: stats.get_desync_frames_bucket_1_2(),
desync_frames_bucket_3_10: stats.get_desync_frames_bucket_3_10(),
desync_frames_bucket_gt_10: stats.get_desync_frames_bucket_gt_10(),
},
}
}
fn build_zero_upstream_data(stats: &Stats) -> ZeroUpstreamData {
ZeroUpstreamData {
connect_attempt_total: stats.get_upstream_connect_attempt_total(),
connect_success_total: stats.get_upstream_connect_success_total(),
connect_fail_total: stats.get_upstream_connect_fail_total(),
connect_failfast_hard_error_total: stats.get_upstream_connect_failfast_hard_error_total(),
connect_attempts_bucket_1: stats.get_upstream_connect_attempts_bucket_1(),
connect_attempts_bucket_2: stats.get_upstream_connect_attempts_bucket_2(),
connect_attempts_bucket_3_4: stats.get_upstream_connect_attempts_bucket_3_4(),
connect_attempts_bucket_gt_4: stats.get_upstream_connect_attempts_bucket_gt_4(),
connect_duration_success_bucket_le_100ms: stats
.get_upstream_connect_duration_success_bucket_le_100ms(),
connect_duration_success_bucket_101_500ms: stats
.get_upstream_connect_duration_success_bucket_101_500ms(),
connect_duration_success_bucket_501_1000ms: stats
.get_upstream_connect_duration_success_bucket_501_1000ms(),
connect_duration_success_bucket_gt_1000ms: stats
.get_upstream_connect_duration_success_bucket_gt_1000ms(),
connect_duration_fail_bucket_le_100ms: stats
.get_upstream_connect_duration_fail_bucket_le_100ms(),
connect_duration_fail_bucket_101_500ms: stats
.get_upstream_connect_duration_fail_bucket_101_500ms(),
connect_duration_fail_bucket_501_1000ms: stats
.get_upstream_connect_duration_fail_bucket_501_1000ms(),
connect_duration_fail_bucket_gt_1000ms: stats
.get_upstream_connect_duration_fail_bucket_gt_1000ms(),
}
}
pub(super) fn build_upstreams_data(shared: &ApiShared, api_cfg: &ApiConfig) -> UpstreamsData {
let generated_at_epoch_secs = now_epoch_secs();
let zero = build_zero_upstream_data(&shared.stats);
if !api_cfg.minimal_runtime_enabled {
return UpstreamsData {
enabled: false,
reason: Some(FEATURE_DISABLED_REASON),
generated_at_epoch_secs,
zero,
summary: None,
upstreams: None,
};
}
let Some(snapshot) = shared.upstream_manager.try_api_snapshot() else {
return UpstreamsData {
enabled: true,
reason: Some(SOURCE_UNAVAILABLE_REASON),
generated_at_epoch_secs,
zero,
summary: None,
upstreams: None,
};
};
let summary = UpstreamSummaryData {
configured_total: snapshot.summary.configured_total,
healthy_total: snapshot.summary.healthy_total,
unhealthy_total: snapshot.summary.unhealthy_total,
direct_total: snapshot.summary.direct_total,
socks4_total: snapshot.summary.socks4_total,
socks5_total: snapshot.summary.socks5_total,
shadowsocks_total: snapshot.summary.shadowsocks_total,
};
let upstreams = snapshot
.upstreams
.into_iter()
.map(|upstream| UpstreamStatus {
upstream_id: upstream.upstream_id,
route_kind: map_route_kind(upstream.route_kind),
address: upstream.address,
weight: upstream.weight,
scopes: upstream.scopes,
healthy: upstream.healthy,
fails: upstream.fails,
last_check_age_secs: upstream.last_check_age_secs,
effective_latency_ms: upstream.effective_latency_ms,
dc: upstream
.dc
.into_iter()
.map(|dc| UpstreamDcStatus {
dc: dc.dc,
latency_ema_ms: dc.latency_ema_ms,
ip_preference: map_ip_preference(dc.ip_preference),
})
.collect(),
})
.collect();
UpstreamsData {
enabled: true,
reason: None,
generated_at_epoch_secs,
zero,
summary: Some(summary),
upstreams: Some(upstreams),
}
}
pub(super) async fn build_minimal_all_data(
shared: &ApiShared,
api_cfg: &ApiConfig,
) -> MinimalAllData {
let now = now_epoch_secs();
if !api_cfg.minimal_runtime_enabled {
return MinimalAllData {
enabled: false,
reason: Some(FEATURE_DISABLED_REASON),
generated_at_epoch_secs: now,
data: None,
};
}
let Some((generated_at_epoch_secs, payload)) =
get_minimal_payload_cached(shared, api_cfg.minimal_runtime_cache_ttl_ms).await
else {
return MinimalAllData {
enabled: true,
reason: Some(SOURCE_UNAVAILABLE_REASON),
generated_at_epoch_secs: now,
data: Some(MinimalAllPayload {
me_writers: disabled_me_writers(now, SOURCE_UNAVAILABLE_REASON),
dcs: disabled_dcs(now, SOURCE_UNAVAILABLE_REASON),
me_runtime: None,
network_path: Vec::new(),
}),
};
};
MinimalAllData {
enabled: true,
reason: None,
generated_at_epoch_secs,
data: Some(payload),
}
}
pub(super) async fn build_me_writers_data(
shared: &ApiShared,
api_cfg: &ApiConfig,
) -> MeWritersData {
let now = now_epoch_secs();
if !api_cfg.minimal_runtime_enabled {
return disabled_me_writers(now, FEATURE_DISABLED_REASON);
}
let Some((_, payload)) =
get_minimal_payload_cached(shared, api_cfg.minimal_runtime_cache_ttl_ms).await
else {
return disabled_me_writers(now, SOURCE_UNAVAILABLE_REASON);
};
payload.me_writers
}
pub(super) async fn build_dcs_data(shared: &ApiShared, api_cfg: &ApiConfig) -> DcStatusData {
let now = now_epoch_secs();
if !api_cfg.minimal_runtime_enabled {
return disabled_dcs(now, FEATURE_DISABLED_REASON);
}
let Some((_, payload)) =
get_minimal_payload_cached(shared, api_cfg.minimal_runtime_cache_ttl_ms).await
else {
return disabled_dcs(now, SOURCE_UNAVAILABLE_REASON);
};
payload.dcs
}
async fn get_minimal_payload_cached(
shared: &ApiShared,
cache_ttl_ms: u64,
) -> Option<(u64, MinimalAllPayload)> {
if cache_ttl_ms > 0 {
let now = Instant::now();
let cached = shared.minimal_cache.lock().await.clone();
if let Some(entry) = cached
&& now < entry.expires_at
{
return Some((entry.generated_at_epoch_secs, entry.payload));
}
}
let pool = shared.me_pool.read().await.clone()?;
let status = pool.api_status_snapshot().await;
let runtime = pool.api_runtime_snapshot().await;
let generated_at_epoch_secs = status.generated_at_epoch_secs;
let me_writers = MeWritersData {
middle_proxy_enabled: true,
reason: None,
generated_at_epoch_secs,
summary: MeWritersSummary {
configured_dc_groups: status.configured_dc_groups,
configured_endpoints: status.configured_endpoints,
available_endpoints: status.available_endpoints,
available_pct: status.available_pct,
required_writers: status.required_writers,
alive_writers: status.alive_writers,
coverage_ratio: status.coverage_ratio,
coverage_pct: status.coverage_pct,
fresh_alive_writers: status.fresh_alive_writers,
fresh_coverage_pct: status.fresh_coverage_pct,
},
writers: status
.writers
.into_iter()
.map(|entry| MeWriterStatus {
writer_id: entry.writer_id,
dc: entry.dc,
endpoint: entry.endpoint.to_string(),
generation: entry.generation,
state: entry.state,
draining: entry.draining,
degraded: entry.degraded,
bound_clients: entry.bound_clients,
idle_for_secs: entry.idle_for_secs,
rtt_ema_ms: entry.rtt_ema_ms,
matches_active_generation: entry.matches_active_generation,
in_desired_map: entry.in_desired_map,
allow_drain_fallback: entry.allow_drain_fallback,
drain_started_at_epoch_secs: entry.drain_started_at_epoch_secs,
drain_deadline_epoch_secs: entry.drain_deadline_epoch_secs,
drain_over_ttl: entry.drain_over_ttl,
})
.collect(),
};
let dcs = DcStatusData {
middle_proxy_enabled: true,
reason: None,
generated_at_epoch_secs,
dcs: status
.dcs
.into_iter()
.map(|entry| DcStatus {
dc: entry.dc,
endpoints: entry
.endpoints
.into_iter()
.map(|value| value.to_string())
.collect(),
endpoint_writers: entry
.endpoint_writers
.into_iter()
.map(|coverage| DcEndpointWriters {
endpoint: coverage.endpoint.to_string(),
active_writers: coverage.active_writers,
})
.collect(),
available_endpoints: entry.available_endpoints,
available_pct: entry.available_pct,
required_writers: entry.required_writers,
floor_min: entry.floor_min,
floor_target: entry.floor_target,
floor_max: entry.floor_max,
floor_capped: entry.floor_capped,
alive_writers: entry.alive_writers,
coverage_ratio: entry.coverage_ratio,
coverage_pct: entry.coverage_pct,
fresh_alive_writers: entry.fresh_alive_writers,
fresh_coverage_pct: entry.fresh_coverage_pct,
rtt_ms: entry.rtt_ms,
load: entry.load,
})
.collect(),
};
let me_runtime = MinimalMeRuntimeData {
active_generation: runtime.active_generation,
warm_generation: runtime.warm_generation,
pending_hardswap_generation: runtime.pending_hardswap_generation,
pending_hardswap_age_secs: runtime.pending_hardswap_age_secs,
hardswap_enabled: runtime.hardswap_enabled,
floor_mode: runtime.floor_mode,
adaptive_floor_idle_secs: runtime.adaptive_floor_idle_secs,
adaptive_floor_min_writers_single_endpoint: runtime
.adaptive_floor_min_writers_single_endpoint,
adaptive_floor_min_writers_multi_endpoint: runtime
.adaptive_floor_min_writers_multi_endpoint,
adaptive_floor_recover_grace_secs: runtime.adaptive_floor_recover_grace_secs,
adaptive_floor_writers_per_core_total: runtime.adaptive_floor_writers_per_core_total,
adaptive_floor_cpu_cores_override: runtime.adaptive_floor_cpu_cores_override,
adaptive_floor_max_extra_writers_single_per_core: runtime
.adaptive_floor_max_extra_writers_single_per_core,
adaptive_floor_max_extra_writers_multi_per_core: runtime
.adaptive_floor_max_extra_writers_multi_per_core,
adaptive_floor_max_active_writers_per_core: runtime
.adaptive_floor_max_active_writers_per_core,
adaptive_floor_max_warm_writers_per_core: runtime.adaptive_floor_max_warm_writers_per_core,
adaptive_floor_max_active_writers_global: runtime.adaptive_floor_max_active_writers_global,
adaptive_floor_max_warm_writers_global: runtime.adaptive_floor_max_warm_writers_global,
adaptive_floor_cpu_cores_detected: runtime.adaptive_floor_cpu_cores_detected,
adaptive_floor_cpu_cores_effective: runtime.adaptive_floor_cpu_cores_effective,
adaptive_floor_global_cap_raw: runtime.adaptive_floor_global_cap_raw,
adaptive_floor_global_cap_effective: runtime.adaptive_floor_global_cap_effective,
adaptive_floor_target_writers_total: runtime.adaptive_floor_target_writers_total,
adaptive_floor_active_cap_configured: runtime.adaptive_floor_active_cap_configured,
adaptive_floor_active_cap_effective: runtime.adaptive_floor_active_cap_effective,
adaptive_floor_warm_cap_configured: runtime.adaptive_floor_warm_cap_configured,
adaptive_floor_warm_cap_effective: runtime.adaptive_floor_warm_cap_effective,
adaptive_floor_active_writers_current: runtime.adaptive_floor_active_writers_current,
adaptive_floor_warm_writers_current: runtime.adaptive_floor_warm_writers_current,
me_keepalive_enabled: runtime.me_keepalive_enabled,
me_keepalive_interval_secs: runtime.me_keepalive_interval_secs,
me_keepalive_jitter_secs: runtime.me_keepalive_jitter_secs,
me_keepalive_payload_random: runtime.me_keepalive_payload_random,
rpc_proxy_req_every_secs: runtime.rpc_proxy_req_every_secs,
me_reconnect_max_concurrent_per_dc: runtime.me_reconnect_max_concurrent_per_dc,
me_reconnect_backoff_base_ms: runtime.me_reconnect_backoff_base_ms,
me_reconnect_backoff_cap_ms: runtime.me_reconnect_backoff_cap_ms,
me_reconnect_fast_retry_count: runtime.me_reconnect_fast_retry_count,
me_pool_drain_ttl_secs: runtime.me_pool_drain_ttl_secs,
me_instadrain: runtime.me_instadrain,
me_pool_drain_soft_evict_enabled: runtime.me_pool_drain_soft_evict_enabled,
me_pool_drain_soft_evict_grace_secs: runtime.me_pool_drain_soft_evict_grace_secs,
me_pool_drain_soft_evict_per_writer: runtime.me_pool_drain_soft_evict_per_writer,
me_pool_drain_soft_evict_budget_per_core: runtime.me_pool_drain_soft_evict_budget_per_core,
me_pool_drain_soft_evict_cooldown_ms: runtime.me_pool_drain_soft_evict_cooldown_ms,
me_pool_force_close_secs: runtime.me_pool_force_close_secs,
me_pool_min_fresh_ratio: runtime.me_pool_min_fresh_ratio,
me_bind_stale_mode: runtime.me_bind_stale_mode,
me_bind_stale_ttl_secs: runtime.me_bind_stale_ttl_secs,
me_single_endpoint_shadow_writers: runtime.me_single_endpoint_shadow_writers,
me_single_endpoint_outage_mode_enabled: runtime.me_single_endpoint_outage_mode_enabled,
me_single_endpoint_outage_disable_quarantine: runtime
.me_single_endpoint_outage_disable_quarantine,
me_single_endpoint_outage_backoff_min_ms: runtime.me_single_endpoint_outage_backoff_min_ms,
me_single_endpoint_outage_backoff_max_ms: runtime.me_single_endpoint_outage_backoff_max_ms,
me_single_endpoint_shadow_rotate_every_secs: runtime
.me_single_endpoint_shadow_rotate_every_secs,
me_deterministic_writer_sort: runtime.me_deterministic_writer_sort,
me_writer_pick_mode: runtime.me_writer_pick_mode,
me_writer_pick_sample_size: runtime.me_writer_pick_sample_size,
me_socks_kdf_policy: runtime.me_socks_kdf_policy,
quarantined_endpoints_total: runtime.quarantined_endpoints.len(),
quarantined_endpoints: runtime
.quarantined_endpoints
.into_iter()
.map(|entry| MinimalQuarantineData {
endpoint: entry.endpoint.to_string(),
remaining_ms: entry.remaining_ms,
})
.collect(),
};
let network_path = runtime
.network_path
.into_iter()
.map(|entry| MinimalDcPathData {
dc: entry.dc,
ip_preference: entry.ip_preference,
selected_addr_v4: entry.selected_addr_v4.map(|value| value.to_string()),
selected_addr_v6: entry.selected_addr_v6.map(|value| value.to_string()),
})
.collect();
let payload = MinimalAllPayload {
me_writers,
dcs,
me_runtime: Some(me_runtime),
network_path,
};
if cache_ttl_ms > 0 {
let entry = MinimalCacheEntry {
expires_at: Instant::now() + Duration::from_millis(cache_ttl_ms),
payload: payload.clone(),
generated_at_epoch_secs,
};
*shared.minimal_cache.lock().await = Some(entry);
}
Some((generated_at_epoch_secs, payload))
}
fn disabled_me_writers(now_epoch_secs: u64, reason: &'static str) -> MeWritersData {
MeWritersData {
middle_proxy_enabled: false,
reason: Some(reason),
generated_at_epoch_secs: now_epoch_secs,
summary: MeWritersSummary {
configured_dc_groups: 0,
configured_endpoints: 0,
available_endpoints: 0,
available_pct: 0.0,
required_writers: 0,
alive_writers: 0,
coverage_ratio: 0.0,
coverage_pct: 0.0,
fresh_alive_writers: 0,
fresh_coverage_pct: 0.0,
},
writers: Vec::new(),
}
}
fn disabled_dcs(now_epoch_secs: u64, reason: &'static str) -> DcStatusData {
DcStatusData {
middle_proxy_enabled: false,
reason: Some(reason),
generated_at_epoch_secs: now_epoch_secs,
dcs: Vec::new(),
}
}
fn map_route_kind(value: UpstreamRouteKind) -> &'static str {
match value {
UpstreamRouteKind::Direct => "direct",
UpstreamRouteKind::Socks4 => "socks4",
UpstreamRouteKind::Socks5 => "socks5",
UpstreamRouteKind::Shadowsocks => "shadowsocks",
}
}
fn map_ip_preference(value: IpPreference) -> &'static str {
match value {
IpPreference::Unknown => "unknown",
IpPreference::PreferV6 => "prefer_v6",
IpPreference::PreferV4 => "prefer_v4",
IpPreference::BothWork => "both_work",
IpPreference::Unavailable => "unavailable",
}
}
fn now_epoch_secs() -> u64 {
SystemTime::now()
.duration_since(UNIX_EPOCH)
.unwrap_or_default()
.as_secs()
}