X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.cms%2Fsrc%2Forg%2Fargeo%2Fcms%2Fintegration%2FCmsExceptionsChain.java;fp=org.argeo.cms%2Fsrc%2Forg%2Fargeo%2Fcms%2Fintegration%2FCmsExceptionsChain.java;h=d7a51b74a96f6770bdf8b82620aa3d2fee73f90e;hb=cd49755b0b4d287d7bc3bb91e1eb6cb3dc70c561;hp=0000000000000000000000000000000000000000;hpb=74787102ae9a8533927cee62238d7e78a22dff63;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.cms/src/org/argeo/cms/integration/CmsExceptionsChain.java b/org.argeo.cms/src/org/argeo/cms/integration/CmsExceptionsChain.java
new file mode 100644
index 000000000..d7a51b74a
--- /dev/null
+++ b/org.argeo.cms/src/org/argeo/cms/integration/CmsExceptionsChain.java
@@ -0,0 +1,74 @@
+package org.argeo.cms.integration;
+
+import java.io.IOException;
+import java.io.Writer;
+
+import javax.servlet.http.HttpServletResponse;
+
+import org.argeo.util.ExceptionsChain;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+/** Serialisable wrapper of a {@link Throwable}. */
+public class CmsExceptionsChain extends ExceptionsChain {
+	public CmsExceptionsChain() {
+		super();
+	}
+
+	public CmsExceptionsChain(Throwable exception) {
+		super(exception);
+	}
+
+	public String toJsonString(ObjectMapper objectMapper) {
+		try {
+			return objectMapper.writeValueAsString(this);
+		} catch (JsonProcessingException e) {
+			throw new IllegalStateException("Cannot write system exceptions " + toString(), e);
+		}
+	}
+
+	public void writeAsJson(ObjectMapper objectMapper, Writer writer) {
+		try {
+			JsonGenerator jg = objectMapper.getFactory().createGenerator(writer);
+			jg.writeObject(this);
+		} catch (IOException e) {
+			throw new IllegalStateException("Cannot write system exceptions " + toString(), e);
+		}
+	}
+
+	public void writeAsJson(ObjectMapper objectMapper, HttpServletResponse resp) {
+		try {
+			resp.setContentType("application/json");
+			resp.setStatus(500);
+			writeAsJson(objectMapper, resp.getWriter());
+		} catch (IOException e) {
+			throw new IllegalStateException("Cannot write system exceptions " + toString(), e);
+		}
+	}
+
+	public static void main(String[] args) throws Exception {
+		try {
+			try {
+				try {
+					testDeeper();
+				} catch (Exception e) {
+					throw new Exception("Less deep exception", e);
+				}
+			} catch (Exception e) {
+				throw new RuntimeException("Top exception", e);
+			}
+		} catch (Exception e) {
+			CmsExceptionsChain vjeSystemErrors = new CmsExceptionsChain(e);
+			ObjectMapper objectMapper = new ObjectMapper();
+			System.out.println(objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(vjeSystemErrors));
+			e.printStackTrace();
+		}
+	}
+
+	static void testDeeper() throws Exception {
+		throw new IllegalStateException("Deep exception");
+	}
+
+}