add shedlock for revocation list sync

ch-covidcertificate-backend-verifier/ch-covidcertificate-backend-verifier-ws/src/main/java/ch/admin/bag/covidcertificate/backend/verifier/ws/config/SchedulingConfig.java

@@ -11,6 +11,9 @@
 package ch.admin.bag.covidcertificate.backend.verifier.ws.config;
 
 import ch.admin.bag.covidcertificate.backend.verifier.ws.client.RevocationListSyncer;
+import net.javacrumbs.shedlock.core.LockAssert;
+import net.javacrumbs.shedlock.spring.annotation.EnableSchedulerLock;
+import net.javacrumbs.shedlock.spring.annotation.SchedulerLock;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Configuration;
@@ -19,6 +22,7 @@
 
 @Configuration
 @EnableScheduling
+@EnableSchedulerLock(defaultLockAtMostFor = "PT10M")
 public class SchedulingConfig {
 
     private static final Logger logger = LoggerFactory.getLogger(SchedulingConfig.class);
@@ -31,7 +35,9 @@ public SchedulingConfig(RevocationListSyncer revocationListSyncer) {
 
     // Sync revocation list every full hour (default)
     @Scheduled(cron = "${revocationList.sync.cron:0 0 * ? * *}")
+    @SchedulerLock(name = "revocation_list_sync", lockAtLeastFor = "PT15S")
     public void syncRevocationList() {
+        LockAssert.assertLocked();
         revocationListSyncer.updateRevokedCerts();
     }
 }

ch-covidcertificate-backend-verifier/ch-covidcertificate-backend-verifier-ws/src/main/java/ch/admin/bag/covidcertificate/backend/verifier/ws/config/WsBaseConfig.java

@@ -39,13 +39,16 @@
 import java.util.List;
 import java.util.Map;
 import javax.sql.DataSource;
+import net.javacrumbs.shedlock.core.LockProvider;
+import net.javacrumbs.shedlock.provider.jdbctemplate.JdbcTemplateLockProvider;
 import org.flywaydb.core.Flyway;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.converter.HttpMessageConverter;
+import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.web.client.RestTemplate;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@@ -192,4 +195,15 @@ public ValueSetsController valueSetsController() throws IOException, NoSuchAlgor
     public RestTemplate restTemplate() {
         return RestTemplateHelper.getRestTemplate();
     }
+
+    @Bean
+    public LockProvider lockProvider(DataSource dataSource) {
+        return new JdbcTemplateLockProvider(
+                JdbcTemplateLockProvider.Configuration.builder()
+                        .withTableName("t_shedlock")
+                        .withJdbcTemplate(new JdbcTemplate(dataSource))
+                        // Works on Postgres, MySQL, MariaDb, MS SQL, Oracle, DB2, HSQL and H2
+                        .usingDbTime()
+                        .build());
+    }
 }