Get domain from page for Url constructing in Eplanning Bidder (prebid#899)

Author: AndriyPavlyuk

src/main/java/org/prebid/server/bidder/eplanning/EplanningBidder.java

@@ -35,6 +35,8 @@
 import org.prebid.server.util.HttpUtil;
 
 import java.math.BigDecimal;
+import java.net.MalformedURLException;
+import java.net.URL;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -191,10 +193,19 @@ private String resolveRequestUri(BidRequest request, List<String> requestsString
         final String ip = device != null ? device.getIp() : null;
 
         final Site site = request.getSite();
-        final String pageDomain = site != null && StringUtils.isNotBlank(site.getDomain())
-                ? site.getDomain() : DEFAULT_PAGE_URL;
-        final String pageUrl = site != null && StringUtils.isNotBlank(site.getPage())
-                ? site.getPage() : DEFAULT_PAGE_URL;
+        String pageUrl = DEFAULT_PAGE_URL;
+        if (site != null && StringUtils.isNotBlank(site.getPage())) {
+            pageUrl = site.getPage();
+        }
+
+        String pageDomain = DEFAULT_PAGE_URL;
+        if (site != null) {
+            if (StringUtils.isNotBlank(site.getDomain())) {
+                pageDomain = site.getDomain();
+            } else if (StringUtils.isNotBlank(site.getPage())) {
+                pageDomain = parseUrl(site.getPage()).getHost();
+            }
+        }
 
         final App app = request.getApp();
         final String requestTarget = app != null && StringUtils.isNotBlank(app.getBundle())
@@ -239,6 +250,14 @@ private String resolveRequestUri(BidRequest request, List<String> requestsString
         return uriBuilder.toString();
     }
 
+    private static URL parseUrl(String url) {
+        try {
+            return new URL(url);
+        } catch (MalformedURLException e) {
+            throw new PreBidException(String.format("Invalid url: %s", url), e);
+        }
+    }
+
     /**
      * Converts response to {@link List} of {@link BidderBid}s with {@link List} of errors.
      * Handles cases when response status is different to OK 200.

src/test/java/org/prebid/server/bidder/eplanning/EplanningBidderTest.java

@@ -210,6 +210,25 @@ public void makeHttpRequestsShouldSetCorrectUriWithSitePageAndDomain() {
                                 + "testadun_itco_de%3A1x1");
     }
 
+    @Test
+    public void makeHttpRequestsShouldSetCorrectUriIfSiteDomainIsBlank() {
+        // given
+        final BidRequest bidRequest = givenBidRequest(
+                requestBuilder -> requestBuilder
+                        .site(Site.builder().page("https://www.example.com").domain("").build()),
+                identity());
+
+        // when
+        final Result<List<HttpRequest<Void>>> result = eplanningBidder.makeHttpRequests(bidRequest);
+
+        // then
+        assertThat(result.getErrors()).isEmpty();
+        assertThat(result.getValue()).hasSize(1)
+                .extracting(HttpRequest::getUri)
+                .containsOnly("https://eplanning.com/clientId/1/www.example.com/ROS?ct=1&r=pbs&ncb=1"
+                        + "&ur=https%3A%2F%2Fwww.example.com&e=testadun_itco_de:1x1");
+    }
+
     @Test
     public void makeHttpRequestsShouldSetCorrectUriWithSizeString() {
         // given