Use HTTPClient that's included in the JDK

.gitignore

@@ -2,7 +2,11 @@
 # Ignore Gradle project-specific cache directory
 .gradle
 
+
 # Ignore Gradle build output directory
 build
 lib/build
-.idea
+lib/bin
+.idea
+
+.DS_Store

lib/build.gradle

@@ -15,7 +15,7 @@ plugins {
     id("maven-publish")
 }
 
-version = '0.1.1'
+version = '0.0.11'
 
 java {
     toolchain {
@@ -48,12 +48,7 @@ publishing {
 
 dependencies {
     // This dependency is exported to consumers, that is to say found on their compile classpath.
-    api 'org.apache.commons:commons-math3:3.6.1'
     api 'com.google.protobuf:protobuf-java:3.23.0'
-    api 'org.apache.httpcomponents.client5:httpclient5-fluent:5.2.1'
-
-    // This dependency is used internally, and not exposed to consumers on their own compile classpath.
-    implementation 'com.google.guava:guava:31.1-jre'
 }
 
 protobuf {
@@ -102,10 +97,11 @@ spotless {
 }
 
 
-tasks.named('jar') {
+jar {
     manifest {
         attributes('Implementation-Title': project.name,
                 'Implementation-Version': project.version)
     }
+    archiveBaseName = 'pbrawclient'
 }
 

lib/src/main/java/org/epics/archiverappliance/retrieval/client/RawDataRetrieval.java

@@ -8,7 +8,9 @@
 package org.epics.archiverappliance.retrieval.client;
 
 import java.io.BufferedInputStream;
+import java.io.InputStream;
 import java.io.StringWriter;
+import java.net.URI;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
@@ -17,7 +19,11 @@
 import java.util.Map;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import org.apache.hc.client5.http.fluent.Request;
+import java.net.http.HttpClient;
+import java.net.http.HttpClient.Redirect;
+import java.net.http.HttpResponse.BodyHandlers;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
 
 /**
  * Client side class for retrieving data from the appliance archiver using the PB over HTTP protocol.
@@ -27,9 +33,13 @@
 public class RawDataRetrieval extends DataRetrieval {
     private static final Logger logger = Logger.getLogger(RawDataRetrieval.class.getName());
     private final String accessURL;
+    private HttpClient theClient;
 
     public RawDataRetrieval(String accessURL) {
         this.accessURL = accessURL;
+        this.theClient = HttpClient.newBuilder()
+            .followRedirects(Redirect.NORMAL)
+            .build();
     }
 
     private static String convertToUTC(Timestamp time) {
@@ -69,15 +79,15 @@ public final GenMsgIterator getDataForPVs(
             });
         }
         String getURL = buf.toString();
-        logger.info("URL to fetch data is " + getURL);
+        logger.info("URL to fetch data is " + getURL);        
         try {
-            URL url = new URL(getURL);
-            var data = Request.get(url.toURI()).execute().returnContent();
-
-            BufferedInputStream is = new BufferedInputStream(data.asStream());
-
-            if (is.available() <= 0) return null;
-            return new InputStreamBackedGenMsg(is);
+            HttpRequest request = HttpRequest.newBuilder().uri(URI.create(getURL)).build();
+            HttpResponse<InputStream> response = this.theClient.send(request, BodyHandlers.ofInputStream());
+            if(response.statusCode() != 200) {
+                logger.warning("Invalid status code from server " + response.statusCode() + " when fetching data from " + getURL);
+                return null;
+            }
+            return new InputStreamBackedGenMsg(response.body());
 
         } catch (Exception ex) {
             logger.log(Level.SEVERE, "Exception fetching data from URL " + getURL, ex);

lib/src/test/java/org/epics/archiverappliance/retrieval/client/CheckArchApplPing.java

@@ -8,7 +8,7 @@ public class CheckArchApplPing {
      * @param args
      */
     public static void main(String[] args) throws Exception {
-        String serverURL = "http://cdlx27.slac.stanford.edu:17665/retrieval";
+        String serverURL = "http://localhost:17665/retrieval";
         if (args.length > 1) {
             serverURL = args[0];
         }