Add authconfigs to client, add logging

Author: BarDweller

client/src/main/java/dev/snowdrop/buildpack/docker/AuthDelegatingDockerClientConfig.java

@@ -2,6 +2,9 @@
 
 import java.util.List;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.github.dockerjava.api.model.AuthConfig;
 import com.github.dockerjava.core.DockerClientConfig;
 import com.github.dockerjava.core.DockerClientConfigDelegate;
@@ -11,6 +14,8 @@
 
 class AuthDelegatingDockerClientConfig extends DockerClientConfigDelegate {
 
+    private static final Logger log = LoggerFactory.getLogger(AuthDelegatingDockerClientConfig.class);
+
     private List<RegistryAuthConfig> registryAuthInfo;
 
     public AuthDelegatingDockerClientConfig(DockerClientConfig delegate) {
@@ -23,20 +28,26 @@ public void setRegistryAuthConfigs(List<RegistryAuthConfig> registryAuthInfo) {
 
     @Override
     public AuthConfig effectiveAuthConfig(String imageName) {
+        log.debug("Resolving authentication configuration for image "+imageName);
         AuthConfig fallbackAuthConfig;
         try {
             fallbackAuthConfig = super.effectiveAuthConfig(imageName);
+            log.debug("fallback config retrieved");
         } catch (Exception e) {
             fallbackAuthConfig = new AuthConfig();
+            log.debug("no fallback config available");
         }
 
         // try and obtain more accurate auth config using our resolution
         final ImageReference parsed = new ImageReference(imageName);
         String address = parsed.getPort()!=null ? parsed.getHost()+":"+parsed.getPort() : parsed.getHost();
+
+        log.debug("Checking configuration for auth config for address "+address);
 
         if(registryAuthInfo!=null) {
             for(RegistryAuthConfig rac : registryAuthInfo){
                 if(address.equals(rac.getRegistryAddress())){
+                    log.debug("found match, configuring");
                     return new AuthConfig()
                                     .withAuth(rac.getAuth())
                                     .withEmail(rac.getEmail())
@@ -49,6 +60,7 @@ public AuthConfig effectiveAuthConfig(String imageName) {
             }
         }
 
+        log.debug("no match, using fallback if available");
         return fallbackAuthConfig;
     }
 }

client/src/main/java/dev/snowdrop/buildpack/docker/DockerClientUtils.java

@@ -55,6 +55,7 @@ public static DockerClient getDockerClient(HostAndSocket runtimeInfo, List<Regis
         .build();
 
     AuthDelegatingDockerClientConfig addcc = new AuthDelegatingDockerClientConfig(config);
+    addcc.setRegistryAuthConfigs(authConfigs);
 
     DockerHttpClient httpClient = new ApacheDockerHttpClient.Builder()
         .dockerHost(config.getDockerHost())