allow RestClient to configure custom headers

allow RestClient to configure custom headers
always load the first implementation on the classpath

Issue-ID: SO-3495
Signed-off-by: Benjamin, Max (mb388a) <mb388a@att.com>
Change-Id: I9c433cdaed33a7db6182af259421676c088a1fae

7 files changed, 54 insertions, 33 deletions

diff --git a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIClient.java b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIClient.java
index 1f747e6c8c..fc5ef86e56 100644
--- a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIClient.java
+++ b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIClient.java
@@ -21,10 +21,11 @@
 package org.onap.aaiclient.client.aai;
 
 import java.net.URI;
-import java.util.HashMap;
-import java.util.Map;
 import javax.ws.rs.NotFoundException;
+import javax.ws.rs.core.MultivaluedHashMap;
+import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.core.UriBuilder;
+import org.javatuples.Pair;
 import org.onap.aaiclient.client.graphinventory.GraphInventoryClient;
 import org.onap.aaiclient.client.graphinventory.exceptions.GraphInventoryUriComputationException;
 import org.onap.so.client.RestClient;
@@ -38,19 +39,19 @@ public class AAIClient extends GraphInventoryClient {
     protected AAIVersion version;
 
     protected AAIClient() {
-        super(AAIProperties.class, new HashMap<String, String>());
+        super(AAIProperties.class, new MultivaluedHashMap<>());
     }
 
     protected AAIClient(AAIVersion version) {
-        super(AAIProperties.class, new HashMap<String, String>());
+        super(AAIProperties.class, new MultivaluedHashMap<>());
         this.version = version;
     }
 
-    protected AAIClient(Map<String, String> additionalHeaders) {
+    protected AAIClient(MultivaluedMap<String, Pair<String, String>> additionalHeaders) {
         super(AAIProperties.class, additionalHeaders);
     }
 
-    protected AAIClient(AAIVersion version, Map<String, String> additionalHeaders) {
+    protected AAIClient(AAIVersion version, MultivaluedMap<String, Pair<String, String>> additionalHeaders) {
         super(AAIProperties.class, additionalHeaders);
         this.version = version;
     }
diff --git a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIDSLQueryClient.java b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIDSLQueryClient.java
index 8b8707e533..d894a0fa0d 100644
--- a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIDSLQueryClient.java
+++ b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIDSLQueryClient.java
@@ -20,6 +20,8 @@
 
 package org.onap.aaiclient.client.aai;
 
+import javax.ws.rs.core.MultivaluedHashMap;
+import org.javatuples.Pair;
 import org.onap.aaiclient.client.aai.entities.AAIResultWrapper;
 import org.onap.aaiclient.client.aai.entities.uri.AAIFluentTypeReverseLookup;
 import org.onap.aaiclient.client.aai.entities.uri.AAIUriFactory;
@@ -33,11 +35,14 @@ public class AAIDSLQueryClient
         extends GraphInventoryQueryClient<AAIDSLQueryClient, DSLQuery, AAIResultWrapper, AAIObjectType> {
 
     public AAIDSLQueryClient() {
-        super(new AAIClient(ImmutableMap.of("X-DslApiVersion", "V2")));
+        super(new AAIClient(new MultivaluedHashMap<String, Pair<String, String>>(
+                ImmutableMap.of("ALL", Pair.with("X-DslApiVersion", "V2")))));
+
     }
 
     public AAIDSLQueryClient(AAIVersion version) {
-        super(new AAIClient(version, ImmutableMap.of("X-DslApiVersion", "V2")));
+        super(new AAIClient(version, new MultivaluedHashMap<String, Pair<String, String>>(
+                ImmutableMap.of("ALL", Pair.with("X-DslApiVersion", "V2")))));
     }
 
     @Override
diff --git a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIRestClient.java b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIRestClient.java
index 0f69b0cc8f..df124efe9a 100644
--- a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIRestClient.java
+++ b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/aai/AAIRestClient.java
@@ -21,8 +21,9 @@
 package org.onap.aaiclient.client.aai;
 
 import java.net.URI;
-import java.util.Map;
 import java.util.Optional;
+import javax.ws.rs.core.MultivaluedMap;
+import org.javatuples.Pair;
 import org.onap.aaiclient.client.graphinventory.GraphInventoryPatchConverter;
 import org.onap.aaiclient.client.graphinventory.GraphInventoryRestClient;
 import org.onap.logging.filter.base.ONAPComponents;
@@ -31,9 +32,10 @@ import org.onap.so.client.ResponseExceptionMapper;
 public class AAIRestClient extends GraphInventoryRestClient {
 
     private final AAIProperties aaiProperties;
-    private final Map<String, String> additionalHeaders;
+    private final MultivaluedMap<String, Pair<String, String>> additionalHeaders;
 
-    protected AAIRestClient(AAIProperties props, URI uri, Map<String, String> additionalHeaders) {
+    protected AAIRestClient(AAIProperties props, URI uri,
+            MultivaluedMap<String, Pair<String, String>> additionalHeaders) {
         super(props, uri);
         this.aaiProperties = props;
         this.additionalHeaders = additionalHeaders;
@@ -45,16 +47,24 @@ public class AAIRestClient extends GraphInventoryRestClient {
     }
 
     @Override
-    protected void initializeHeaderMap(Map<String, String> headerMap) {
-        headerMap.put("X-FromAppId", aaiProperties.getSystemName());
-        headerMap.put("X-TransactionId", requestId);
-        headerMap.putAll(additionalHeaders);
+    protected void initializeHeaderMap(MultivaluedMap<String, Pair<String, String>> headerMap) {
+        headerMap.add("ALL", Pair.with("X-FromAppId", aaiProperties.getSystemName()));
+        headerMap.add("ALL", Pair.with("X-TransactionId", requestId));
+        additionalHeaders.forEach((k, v) -> {
+            headerMap.addAll(k, v);
+        });
         String auth = aaiProperties.getAuth();
         String key = aaiProperties.getKey();
 
         if (auth != null && !auth.isEmpty() && key != null && !key.isEmpty()) {
             addBasicAuthHeader(auth, key);
         }
+
+        if (!aaiProperties.additionalHeaders().isEmpty()) {
+            aaiProperties.additionalHeaders().forEach((k, v) -> {
+                headerMap.addAll(k, v);
+            });
+        }
     }
 
     @Override
diff --git a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/graphinventory/GraphInventoryClient.java b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/graphinventory/GraphInventoryClient.java
index f8f977d117..af875fa274 100644
--- a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/graphinventory/GraphInventoryClient.java
+++ b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/graphinventory/GraphInventoryClient.java
@@ -21,22 +21,22 @@
 package org.onap.aaiclient.client.graphinventory;
 
 import java.net.URI;
-import java.util.Map;
+import javax.ws.rs.core.MultivaluedHashMap;
+import javax.ws.rs.core.MultivaluedMap;
+import org.javatuples.Pair;
 import org.onap.aaiclient.client.graphinventory.entities.uri.GraphInventoryUri;
 import org.onap.aaiclient.client.graphinventory.entities.uri.HttpAwareUri;
 import org.onap.so.client.RestClient;
 import org.onap.so.client.RestProperties;
 import org.onap.so.client.RestPropertiesLoader;
-import com.google.common.collect.ImmutableMap;
 
 public abstract class GraphInventoryClient {
 
     private RestProperties props;
-    protected final Map<String, String> additionalHeaders;
+    protected final MultivaluedMap<String, Pair<String, String>> additionalHeaders;
 
     protected GraphInventoryClient(Class<? extends RestProperties> propertiesClass,
-            Map<String, String> additionalHeaders) {
-
+            MultivaluedMap<String, Pair<String, String>> additionalHeaders) {
         RestProperties props = RestPropertiesLoader.getInstance().getNewImpl(propertiesClass);
         this.props = props;
         this.additionalHeaders = additionalHeaders;
@@ -70,7 +70,7 @@ public abstract class GraphInventoryClient {
 
     public abstract String getGraphDBName();
 
-    public Map<String, String> getAdditionalHeaders() {
-        return ImmutableMap.copyOf(this.additionalHeaders);
+    public MultivaluedMap<String, Pair<String, String>> getAdditionalHeaders() {
+        return new MultivaluedHashMap<>(this.additionalHeaders);
     }
 }
diff --git a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/graphinventory/GraphInventoryRestClient.java b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/graphinventory/GraphInventoryRestClient.java
index c22f2f5f8e..6ccd1a2cab 100644
--- a/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/graphinventory/GraphInventoryRestClient.java
+++ b/graph-inventory/aai-client/src/main/java/org/onap/aaiclient/client/graphinventory/GraphInventoryRestClient.java
@@ -21,10 +21,11 @@
 package org.onap.aaiclient.client.graphinventory;
 
 import java.net.URI;
-import java.util.Map;
 import java.util.Optional;
 import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.core.Response;
+import org.javatuples.Pair;
 import org.onap.aaiclient.client.CacheControlFeature;
 import org.onap.aaiclient.client.FlushCache;
 import org.onap.logging.filter.base.ONAPComponentsList;
@@ -65,7 +66,7 @@ public abstract class GraphInventoryRestClient extends RestClientSSL {
     public abstract ONAPComponentsList getTargetEntity();
 
     @Override
-    protected abstract void initializeHeaderMap(Map<String, String> headerMap);
+    protected abstract void initializeHeaderMap(MultivaluedMap<String, Pair<String, String>> headerMap);
 
     @Override
     protected abstract Optional<ResponseExceptionMapper> addResponseExceptionMapper();
diff --git a/graph-inventory/aai-client/src/test/java/org/onap/aaiclient/client/aai/AAIDSLQueryClientTest.java b/graph-inventory/aai-client/src/test/java/org/onap/aaiclient/client/aai/AAIDSLQueryClientTest.java
index 36fc1db57c..68858de9a4 100644
--- a/graph-inventory/aai-client/src/test/java/org/onap/aaiclient/client/aai/AAIDSLQueryClientTest.java
+++ b/graph-inventory/aai-client/src/test/java/org/onap/aaiclient/client/aai/AAIDSLQueryClientTest.java
@@ -1,7 +1,8 @@
 package org.onap.aaiclient.client.aai;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 import java.net.URISyntaxException;
+import org.javatuples.Pair;
 import org.junit.Test;
 
 public class AAIDSLQueryClientTest {
@@ -12,6 +13,6 @@ public class AAIDSLQueryClientTest {
     public void verifyHeadersTest() throws URISyntaxException {
 
         AAIDSLQueryClient client = new AAIDSLQueryClient();
-        assertEquals("V2", client.getClient().getAdditionalHeaders().get("X-DslApiVersion"));
+        assertTrue(client.getClient().getAdditionalHeaders().get("ALL").contains(Pair.with("X-DslApiVersion", "V2")));
     }
 }
diff --git a/graph-inventory/aai-client/src/test/java/org/onap/aaiclient/client/aai/AAIRestClientTest.java b/graph-inventory/aai-client/src/test/java/org/onap/aaiclient/client/aai/AAIRestClientTest.java
index d0f7847726..9b34095a23 100644
--- a/graph-inventory/aai-client/src/test/java/org/onap/aaiclient/client/aai/AAIRestClientTest.java
+++ b/graph-inventory/aai-client/src/test/java/org/onap/aaiclient/client/aai/AAIRestClientTest.java
@@ -43,8 +43,9 @@ import java.net.MalformedURLException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
-import java.util.HashMap;
+import javax.ws.rs.core.MultivaluedHashMap;
 import javax.ws.rs.core.Response;
+import org.javatuples.Pair;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
@@ -75,7 +76,7 @@ public class AAIRestClientTest {
 
     @Test
     public void failPatchOnComplexObject() throws URISyntaxException {
-        AAIRestClient client = new AAIRestClient(props, new URI(""), new HashMap<String, String>());
+        AAIRestClient client = new AAIRestClient(props, new URI(""), new MultivaluedHashMap<>());
         this.thrown.expect(GraphInventoryPatchDepthExceededException.class);
         this.thrown.expectMessage(containsString("Object exceeds allowed depth for update action"));
         client.patch(
@@ -84,7 +85,7 @@ public class AAIRestClientTest {
 
     @Test
     public void verifyPatchValidation() throws URISyntaxException {
-        AAIRestClient client = new AAIRestClient(props, new URI(""), new HashMap<String, String>());
+        AAIRestClient client = new AAIRestClient(props, new URI(""), new MultivaluedHashMap<>());
         AAIRestClient spy = spy(client);
         GraphInventoryPatchConverter patchValidatorMock = mock(GraphInventoryPatchConverter.class);
         doReturn(patchValidatorMock).when(spy).getPatchConverter();
@@ -97,11 +98,13 @@ public class AAIRestClientTest {
     @Test
     public void verifyAdditionalHeadersTest() throws URISyntaxException {
         AAIRestClient client = new AAIRestClient(new DefaultAAIPropertiesImpl(wireMockRule.port()), new URI("/test"),
-                ImmutableMap.of("test", "value"));
+                new MultivaluedHashMap<String, Pair<String, String>>(
+                        ImmutableMap.of("ALL", Pair.with("test", "value"), "GET", Pair.with("get test", "value"))));
         wireMockRule.stubFor(get(urlPathEqualTo("/test")).willReturn(aResponse().withStatus(200)));
         client.get();
         wireMockRule.verify(getRequestedFor(urlPathEqualTo("/test")).withHeader("X-FromAppId", equalTo("MSO"))
-                .withHeader("X-TransactionId", matching(".*")).withHeader("test", equalTo("value")));
+                .withHeader("X-TransactionId", matching(".*")).withHeader("test", equalTo("value"))
+                .withHeader("get test", equalTo("value")));
     }
 
 
@@ -145,7 +148,7 @@ public class AAIRestClientTest {
             }
 
         };
-        RestClient client = new AAIRestClient(props, new URI("/cached"), new HashMap<String, String>());
+        RestClient client = new AAIRestClient(props, new URI("/cached"), new MultivaluedHashMap<>());
 
         Response response = client.get();
 
@@ -199,7 +202,7 @@ public class AAIRestClientTest {
 
         };
 
-        RestClient client = new AAIRestClient(props, new URI("/cached/1"), new HashMap<String, String>());
+        RestClient client = new AAIRestClient(props, new URI("/cached/1"), new MultivaluedHashMap<>());
 
 
         Response response = client.get();