File size: 5,485 Bytes
3374e90 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 | use bex_types::plugin_info::PluginInfo;
use bex_types::{Capabilities, Manifest};
use indexmap::IndexMap;
use std::sync::atomic::{AtomicU32, AtomicU64, AtomicU8, Ordering};
use std::sync::Arc;
use wasmtime::component::Component;
/// Health tracking for circuit breaker pattern.
/// States: 0 = closed (healthy), 1 = open (broken), 2 = half-open (testing)
pub struct PluginHealth {
consecutive_failures: AtomicU32,
last_failure_at: AtomicU64,
circuit_state: AtomicU8,
threshold: u32,
cooldown_ms: u64,
}
impl PluginHealth {
pub fn new(threshold: u32, cooldown_ms: u64) -> Self {
Self {
consecutive_failures: AtomicU32::new(0),
last_failure_at: AtomicU64::new(0),
circuit_state: AtomicU8::new(0),
threshold,
cooldown_ms,
}
}
pub fn record_success(&self) {
self.consecutive_failures.store(0, Ordering::Relaxed);
self.circuit_state.store(0, Ordering::Relaxed);
}
pub fn record_failure(&self) {
let count = self.consecutive_failures.fetch_add(1, Ordering::Relaxed) + 1;
self.last_failure_at.store(now_ms(), Ordering::Relaxed);
if count >= self.threshold {
self.circuit_state.store(1, Ordering::Relaxed);
}
}
pub fn is_available(&self) -> bool {
match self.circuit_state.load(Ordering::Relaxed) {
0 => true,
1 => {
if now_ms() - self.last_failure_at.load(Ordering::Relaxed) > self.cooldown_ms {
self.circuit_state.store(2, Ordering::Relaxed);
true
} else {
false
}
}
2 => true,
_ => false,
}
}
}
fn now_ms() -> u64 {
std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.unwrap_or_default()
.as_millis() as u64
}
pub struct PluginRecord {
pub id: String,
pub manifest: Arc<Manifest>,
pub capabilities: Capabilities,
pub enabled: bool,
pub installed_at: u64,
pub component: Arc<Component>,
pub health: PluginHealth,
}
impl PluginRecord {
pub fn new(manifest: Manifest, component: Arc<Component>, threshold: u32, cooldown_ms: u64) -> Self {
let id = manifest.id.clone();
let capabilities = manifest.capabilities();
let installed_at = std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.unwrap_or_default()
.as_millis() as u64;
Self {
id,
manifest: Arc::new(manifest),
capabilities,
enabled: true,
installed_at,
component,
health: PluginHealth::new(threshold, cooldown_ms),
}
}
pub fn to_plugin_info(&self) -> PluginInfo {
PluginInfo {
id: self.id.clone(),
name: self.manifest.name.clone(),
version: self.manifest.version.clone(),
capabilities: self.capabilities.bits(),
description: self.manifest.display.description.clone().unwrap_or_default(),
tags: self.manifest.display.tags.clone(),
priority: self.manifest.display.priority,
enabled: self.enabled,
installed_at: self.installed_at,
}
}
/// Returns sorted-by-priority list of enabled plugins with the given capability
pub fn matches_capability(&self, cap: Capabilities) -> bool {
self.enabled && self.capabilities.has(cap)
}
}
/// Plugin registry with deterministic insertion order via IndexMap.
pub struct PluginRegistry {
by_id: IndexMap<String, Arc<PluginRecord>>,
}
impl PluginRegistry {
pub fn new() -> Self {
Self {
by_id: IndexMap::new(),
}
}
pub fn insert(&mut self, record: Arc<PluginRecord>) {
self.by_id.insert(record.id.clone(), record);
}
pub fn remove(&mut self, id: &str) -> Option<Arc<PluginRecord>> {
self.by_id.shift_remove(id)
}
pub fn get(&self, id: &str) -> Option<&Arc<PluginRecord>> {
self.by_id.get(id)
}
/// Returns list in deterministic insertion order
pub fn list(&self) -> Vec<PluginInfo> {
self.by_id.values().map(|r| r.to_plugin_info()).collect()
}
/// Returns plugins sorted by priority (highest first), then by ID for stable tiebreak
pub fn list_sorted_by_priority(&self) -> Vec<Arc<PluginRecord>> {
let mut plugins: Vec<_> = self.by_id.values().cloned().collect();
plugins.sort_by(|a, b| {
b.manifest.display.priority
.cmp(&a.manifest.display.priority)
.then_with(|| a.id.cmp(&b.id))
});
plugins
}
/// List enabled plugins with the given capability, sorted by priority
pub fn list_with_cap(&self, cap: Capabilities) -> Vec<Arc<PluginRecord>> {
let mut plugins: Vec<_> = self
.by_id
.values()
.filter(|r| r.matches_capability(cap))
.cloned()
.collect();
plugins.sort_by(|a, b| {
b.manifest.display.priority
.cmp(&a.manifest.display.priority)
.then_with(|| a.id.cmp(&b.id))
});
plugins
}
/// Get mutable reference — needed for enable/disable
pub fn get_arc_mut(&mut self, id: &str) -> Option<&mut Arc<PluginRecord>> {
self.by_id.get_mut(id)
}
}
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