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641b62c | 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 | /**
* tools/requestQueue.ts — Request queue for mobile
*
* Gestisce:
* - Concorrenza limitata
* - Timeout e retry
* - Priority queue
* - Abort support
*/
export interface QueuedRequest {
id: string;
priority: number; // 0-10, higher = more important
fn: () => Promise<unknown>;
timeout: number;
retries: number;
resolve: (value: unknown) => void;
reject: (error: Error) => void;
abortSignal?: AbortSignal;
}
export class RequestQueue {
private queue: QueuedRequest[] = [];
private running = 0;
private maxConcurrent = 2; // iPhone-friendly
private requestId = 0;
constructor(maxConcurrent: number = 2) {
this.maxConcurrent = maxConcurrent;
}
/**
* Add request to queue
*/
add<T>(
fn: () => Promise<T>,
options: {
priority?: number;
timeout?: number;
retries?: number;
abortSignal?: AbortSignal;
} = {},
): Promise<T> {
return new Promise((resolve, reject) => {
const request: QueuedRequest = {
id: `req_${++this.requestId}`,
priority: options.priority ?? 5,
fn,
timeout: options.timeout ?? 30000,
retries: options.retries ?? 1,
resolve: resolve as (value: unknown) => void,
reject,
abortSignal: options.abortSignal,
};
this.queue.push(request);
this.queue.sort((a, b) => b.priority - a.priority);
this.process();
});
}
/**
* Process queue
*/
private process(): void {
while (
this.running < this.maxConcurrent &&
this.queue.length > 0
) {
const request = this.queue.shift();
if (!request) break;
this.running++;
this.executeRequest(request);
}
}
/**
* Execute single request with retry
*/
private async executeRequest(
request: QueuedRequest,
): Promise<void> {
let lastError: Error | undefined;
for (let attempt = 0; attempt <= request.retries; attempt++) {
try {
// Check abort signal
if (request.abortSignal?.aborted) {
throw new Error("Richiesta interrotta");
}
// Execute with timeout
const result = await Promise.race([
request.fn(),
this.timeout(request.timeout),
]);
request.resolve(result);
this.running--;
this.process();
return;
} catch (error) {
lastError = error as Error;
// Don't retry on abort
if (
lastError.message === "Richiesta interrotta"
) {
break;
}
// Wait before retry
if (attempt < request.retries) {
await new Promise((resolve) =>
setTimeout(resolve, 1000 * (attempt + 1)),
);
}
}
}
request.reject(
lastError || new Error("Errore sconosciuto"),
);
this.running--;
this.process();
}
/**
* Timeout promise
*/
private timeout(ms: number): Promise<never> {
return new Promise((_, reject) =>
setTimeout(
() => reject(new Error("Timeout della richiesta")),
ms,
),
);
}
/**
* Get queue size
*/
getSize(): number {
return this.queue.length;
}
/**
* Clear queue
*/
clear(): void {
for (const request of this.queue) {
request.reject(new Error("Coda svuotata"));
}
this.queue = [];
}
/**
* Set max concurrent
*/
setMaxConcurrent(max: number): void {
this.maxConcurrent = max;
this.process();
}
}
// Global queue instance
let globalQueue: RequestQueue | null = null;
export function getGlobalQueue(): RequestQueue {
if (!globalQueue) {
globalQueue = new RequestQueue(2);
}
return globalQueue;
}
export function setGlobalQueueConcurrency(
max: number,
): void {
getGlobalQueue().setMaxConcurrent(max);
}
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