ATLAS-4845 : Atlas Import is failing with fetchType: Incremental if there are no changes between two consecutive runs
Signed-off-by: Pinal Shah <pinal.shah@freestoneinfotech.com>
diff --git a/intg/src/main/java/org/apache/atlas/model/impexp/AtlasExportRequest.java b/intg/src/main/java/org/apache/atlas/model/impexp/AtlasExportRequest.java
index b03b386..878b1d8 100644
--- a/intg/src/main/java/org/apache/atlas/model/impexp/AtlasExportRequest.java
+++ b/intg/src/main/java/org/apache/atlas/model/impexp/AtlasExportRequest.java
@@ -62,6 +62,7 @@
public static final String MATCH_TYPE_CONTAINS = "contains";
public static final String MATCH_TYPE_MATCHES = "matches";
public static final String MATCH_TYPE_FOR_TYPE = "forType";
+ public static final String OMIT_ZIP_RESPONSE_FOR_EMPTY_EXPORT = "omitZipResponseForEmptyExport";
private List<AtlasObjectId> itemsToExport = new ArrayList<>();
private Map<String, Object> options = new HashMap<>();
@@ -151,6 +152,25 @@
}
}
+ public Boolean getOmitZipResponseForEmptyExport() {
+
+ if (MapUtils.isEmpty(getOptions()) ||
+ !getOptions().containsKey(AtlasExportRequest.OMIT_ZIP_RESPONSE_FOR_EMPTY_EXPORT)) {
+ return false;
+ }
+
+ Object o = getOptions().get(AtlasExportRequest.OMIT_ZIP_RESPONSE_FOR_EMPTY_EXPORT);
+ if (o instanceof String) {
+ return Boolean.parseBoolean((String) o);
+ }
+
+ if (o instanceof Boolean) {
+ return (Boolean) o;
+ }
+
+ return false;
+ }
+
public StringBuilder toString(StringBuilder sb) {
if (sb == null) {
sb = new StringBuilder();
diff --git a/repository/src/main/java/org/apache/atlas/repository/impexp/ZipSink.java b/repository/src/main/java/org/apache/atlas/repository/impexp/ZipSink.java
index 5cec39d..4bb7313 100644
--- a/repository/src/main/java/org/apache/atlas/repository/impexp/ZipSink.java
+++ b/repository/src/main/java/org/apache/atlas/repository/impexp/ZipSink.java
@@ -127,4 +127,8 @@
private void recordAddedEntityGuids(AtlasEntity entity) {
guids.add(entity.getGuid());
}
+
+ public Set<String> getGuids() {
+ return guids;
+ }
}
diff --git a/webapp/src/main/java/org/apache/atlas/web/resources/AdminResource.java b/webapp/src/main/java/org/apache/atlas/web/resources/AdminResource.java
index 3a7777a..89d1dd3 100755
--- a/webapp/src/main/java/org/apache/atlas/web/resources/AdminResource.java
+++ b/webapp/src/main/java/org/apache/atlas/web/resources/AdminResource.java
@@ -127,6 +127,7 @@
import java.util.stream.Collectors;
import static org.apache.atlas.web.filters.AtlasCSRFPreventionFilter.CSRF_TOKEN;
+import static javax.servlet.http.HttpServletResponse.SC_NO_CONTENT;
/**
@@ -624,7 +625,6 @@
Servlets.getHostName(httpServletRequest),
AtlasAuthorizationUtils.getRequestIpAddress(httpServletRequest));
- exportSink.close();
httpServletResponse.addHeader("Content-Encoding","gzip");
httpServletResponse.setContentType("application/zip");
@@ -632,9 +632,20 @@
"attachment; filename=" + result.getClass().getSimpleName());
httpServletResponse.setHeader("Transfer-Encoding", "chunked");
- httpServletResponse.getOutputStream().flush();
isSuccessful = true;
- return Response.ok().build();
+ if (CollectionUtils.isNotEmpty(exportSink.getGuids())) {
+ httpServletResponse.getOutputStream().flush();
+ return Response.ok().build();
+ } else {
+ if (request.getOmitZipResponseForEmptyExport()) {
+ httpServletResponse.setStatus(SC_NO_CONTENT);
+ httpServletResponse.getOutputStream().flush();
+ return Response.status(Response.Status.NO_CONTENT).build();
+ } else {
+ httpServletResponse.getOutputStream().flush();
+ return Response.ok().build();
+ }
+ }
} catch (IOException excp) {
LOG.error("export() failed", excp);