+ private static Set<String> createAllShardNames(Iterable<ModuleShard> moduleShards) {
+ final com.google.common.collect.ImmutableSet.Builder<String> b = ImmutableSet.builder();
+ for(ModuleShard ms : moduleShards){
+ for(Shard s : ms.getShards()) {
+ b.add(s.getName());
+ }
+ }
+ return b.build();
+ }
+
+ private static Map<String, ShardStrategy> createModuleNameToStrategy(Iterable<Module> modules) {
+ final com.google.common.collect.ImmutableMap.Builder<String, ShardStrategy> b = ImmutableMap.builder();
+ for (Module m : modules) {
+ b.put(m.getName(), m.getShardStrategy());
+ }
+ return b.build();
+ }
+
+ private static Map<String, String> createNamespaceToModuleName(Iterable<Module> modules) {
+ final com.google.common.collect.ImmutableMap.Builder<String, String> b = ImmutableMap.builder();
+ for (Module m : modules) {
+ b.put(m.getNameSpace(), m.getName());
+ }
+ return b.build();
+ }
+
+ private static ListMultimap<String, String> createModuleNameToShardName(Iterable<ModuleShard> moduleShards) {
+ final com.google.common.collect.ImmutableListMultimap.Builder<String, String> b = ImmutableListMultimap.builder();
+
+ for (ModuleShard m : moduleShards) {
+ for (Shard s : m.getShards()) {
+ b.put(m.getModuleName(), s.getName());
+ }
+ }
+
+ return b.build();
+ }
+
+ @Override public List<String> getMemberShardNames(final String memberName){
+
+ Preconditions.checkNotNull(memberName, "memberName should not be null");
+
+ if(memberShardNames.containsKey(memberName)){
+ return memberShardNames.get(memberName);
+ }
+
+ List<String> shards = new ArrayList<>();