Merge pull request #177 from iExecBlockchainComputing/dont-ask-replicate-if-unsync-node

Dont ask replicate if unsync node

Author: james-toussaint

src/main/java/com/iexec/worker/replicate/ReplicateDemandService.java

@@ -45,12 +45,18 @@ public ReplicateDemandService(TaskExecutorService taskExecutorService,
     @Scheduled(fixedRateString = "#{publicConfigurationService.askForReplicatePeriod}")
     public void askForReplicate() {
         // check if the worker can run a task or not
-        long lastAvailableBlockNumber = iexecHubService.getLatestBlockNumber();
-        if (!taskExecutorService.canAcceptMoreReplicates() && lastAvailableBlockNumber == 0) {
+        if (!taskExecutorService.canAcceptMoreReplicates()) {
             log.info("The worker is already full, it can't accept more tasks");
             return;
         }
 
+        long lastAvailableBlockNumber = iexecHubService.getLatestBlockNumber();
+        if (lastAvailableBlockNumber == 0) {
+            log.error("Can't askForReplicate, your blockchain node seams unsync [lastAvailableBlockNumber:{}]",
+                    lastAvailableBlockNumber);
+            return;
+        }
+
         Optional<ContributionAuthorization> oContributionAuth =
                 customFeignClient.getAvailableReplicate(lastAvailableBlockNumber);