[Developer] #424 implement VPD ORDS backoffice

Refs #424

src/main/java/com/cloudhandson/vpdbackoffice/service/ProbeErrorClassifier.java

@@ -0,0 +1,36 @@
+package com.cloudhandson.vpdbackoffice.service;
+
+import com.cloudhandson.vpdbackoffice.domain.probe.ProbeStatus;
+import java.net.SocketTimeoutException;
+import org.springframework.http.HttpStatusCode;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.ResourceAccessException;
+
+@Component
+public class ProbeErrorClassifier {
+
+  public ProbeStatus classify(HttpStatusCode status, String body) {
+    String text = body == null ? "" : body;
+    if (text.contains("ORA-20002")) {
+      return ProbeStatus.INVALID_TOKEN;
+    }
+    if (text.contains("ORA-00942") || text.contains("ORA-01031")) {
+      return ProbeStatus.OBJECT_NOT_ACCESSIBLE;
+    }
+    if (status != null && (status.value() == 401 || status.value() == 403)) {
+      return ProbeStatus.INVALID_TOKEN;
+    }
+    return ProbeStatus.UNKNOWN_ERROR;
+  }
+
+  public boolean isTimeout(ResourceAccessException exception) {
+    Throwable cause = exception;
+    while (cause != null) {
+      if (cause instanceof SocketTimeoutException) {
+        return true;
+      }
+      cause = cause.getCause();
+    }
+    return false;
+  }
+}