[collector]fix jdbc spi并发加载死锁 (#40)

collector/src/main/java/com/usthe/collector/collect/database/JdbcSpiLoader.java

@@ -0,0 +1,31 @@
+package com.usthe.collector.collect.database;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Service;
+
+/**
+ * 预加载jdbc驱动包 避免spi并发加载造成死锁
+ * @author tom
+ * @date 2022/3/19 15:39
+ */
+@Service
+@Slf4j
+@Order(value = 0)
+public class JdbcSpiLoader implements CommandLineRunner {
+
+
+    @Override
+    public void run(String... args) throws Exception {
+        log.info("start load jdbc drivers");
+        try {
+            Class.forName("com.mysql.cj.jdbc.Driver");
+            Class.forName("org.postgresql.Driver");
+            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
+        } catch (Exception e) {
+            log.error("load jdbc error: {}", e.getMessage(), e);
+        }
+        log.info("end load jdbc drivers");
+    }
+}

collector/src/main/resources/META-INF/spring.factories

@@ -6,4 +6,5 @@ com.usthe.collector.dispatch.MetricsCollectorQueue,\
 com.usthe.collector.dispatch.WorkerPool,\
 com.usthe.collector.dispatch.entrance.internal.CollectJobService,\
 com.usthe.collector.dispatch.export.MetricsDataExporter,\
-com.usthe.collector.util.SpringContextHolder
+com.usthe.collector.util.SpringContextHolder,\
+com.usthe.collector.collect.database.JdbcSpiLoader