Fix generating of docs

- when multiple ClassPaths pointed to the same class,
  ClassPathTypeIndex failed on duplicate key. Issue is resolved
  by ignoring other keys that refer to the same class and for every
  class key is genereated only once.


Change-Id: I67fc783a335400c936cd52a0ba9118ab53402800
Signed-off-by: Michal Cmarada <michal.cmarada@pantheon.tech>

1 files changed, 24 insertions, 3 deletions

diff --git a/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/ClassPathTypeIndex.java b/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/ClassPathTypeIndex.java
index 4eeac5953..bc068034a 100644
--- a/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/ClassPathTypeIndex.java
+++ b/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/ClassPathTypeIndex.java
@@ -22,9 +22,13 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.HashMap;
 import java.util.Map;
+import java.util.Set;
 import java.util.stream.Collectors;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Index of java classes to relative absolute paths within repository. Used to generate Git links for binding classes of
@@ -32,6 +36,8 @@ import java.util.stream.Collectors;
  */
 public class ClassPathTypeIndex implements LinkGenerator {
 
+    private static final Logger LOG = LoggerFactory.getLogger(ClassPathTypeIndex.class);
+
     private static final String JAVA_SOURCE_FOLDER = "src/main/java";
     private static final int JAVA_SOURCE_FOLDER_NAME_LENGTH = JAVA_SOURCE_FOLDER.length() + 1;
 
@@ -60,13 +66,28 @@ public class ClassPathTypeIndex implements LinkGenerator {
 
     private Map<String, String> buildIndex(final String projectRoot) {
         try {
-            return Files.walk(Paths.get(projectRoot))
+            Set<String> names =
+                Files.walk(Paths.get(projectRoot))
                     .filter(path -> path.toString().contains("src/main/java"))
                     .filter(path -> path.toString().endsWith(".java"))
                     .map(Path::toString)
                     .map(s -> s.replace(projectRoot, ""))
-                    .distinct()
-                    .collect(Collectors.toMap(ClassPathTypeIndex::key, o -> generateLink(o)));
+                    .collect(Collectors.toSet());
+
+            Map<String, String> register = new HashMap<>();
+            for (String name : names) {
+                String key = key(name);
+                if (register.containsKey(key)) {
+                    /* expected duplicates e.g. In MPLS and SRV6 modules several same types are used
+                       (like ipv6-multicast-source-address). We don`t need to create another link for the same class
+                       so we can skip these duplicates */
+
+                    LOG.trace("Duplicate key found for name: {}. Skip generating new link for the same class", name);
+                } else {
+                    register.put(key, generateLink(name));
+                }
+            }
+            return register;
         } catch (IOException e) {
             throw new IllegalStateException(format("%s not found", projectRoot), e);
         }