fix(demand): defined minimum expiration value for demand

src/market/market.module.ts

@@ -285,9 +285,26 @@ export class MarketModuleImpl implements MarketModule {
       ? await this.applyLocalGVMIServeSupport(demandOptions.workload)
       : demandOptions.workload;
 
+    /**
+     * We need to publish a demand with a minimum expiration time of no less than 5 minutes.
+     *
+     * When negotiating an offer and sending a counter proposal, providers (on default settings)
+     * reject offers with an expirationSec of less than 5 minutes.
+     * By default, the expirationSec in CounterProposal value is copied from the value defined in the demand.
+     *
+     * Additionally, we want to avoid a situation when the demand expires before finding and signing
+     * an agreement with the provider. Therefore, we assume a minimum time of 15 minutes,
+     * if the value calculated based on the user-defined rentHourse is less.
+     */
+    const MIN_EXPIRATION_SEC = 15;
+
+    const expirationSecBasedOnRentTime = orderOptions.rentHours * 3600;
+    const expirationSec =
+      expirationSecBasedOnRentTime < MIN_EXPIRATION_SEC ? MIN_EXPIRATION_SEC : expirationSecBasedOnRentTime;
+
     const workloadConfig = new WorkloadDemandDirectorConfig({
       ...workloadOptions,
-      expirationSec: orderOptions.rentHours * 60 * 60, // hours to seconds
+      expirationSec,
     });
     const workloadDirector = new WorkloadDemandDirector(workloadConfig);
     await workloadDirector.apply(builder);