Refactor Config-file-based auth

CHANGELOG.md

@@ -5,7 +5,13 @@
 Not released yet
 
 - Make ContainerState.exitCode() return a Long instead of Integer ([1052][])
+- Refactor authentication with docker config.json file ([1051][])
+    - Add support for `credsHelper` (Fixes [1037][])
+    - Improve support for authenticating with multiple registries (Fixes [1042][])
 
+[1037]: https://github.com/spotify/docker-client/issues/1037
+[1042]: https://github.com/spotify/docker-client/issues/1042
+[1051]: https://github.com/spotify/docker-client/issues/1051
 [1052]: https://github.com/spotify/docker-client/issues/1052
 
 ## 8.11.6

src/main/java/com/spotify/docker/client/DefaultDockerClient.java

@@ -3166,14 +3166,6 @@ public RequestEntityProcessing getRequestEntityProcessing() {
     }
 
     public DefaultDockerClient build() {
-      if (dockerAuth && registryAuthSupplier == null && registryAuth == null) {
-        try {
-          registryAuth(RegistryAuth.fromDockerConfig().build());
-        } catch (IOException e) {
-          log.warn("Unable to use Docker auth info", e);
-        }
-      }
-
       // read the docker config file for auth info if nothing else was specified
       if (registryAuthSupplier == null) {
         registryAuthSupplier(new ConfigFileRegistryAuthSupplier());

src/main/java/com/spotify/docker/client/DockerConfig.java

@@ -0,0 +1,101 @@
+/*-
+ * -\-\-
+ * docker-client
+ * --
+ * Copyright (C) 2016 - 2018 Spotify AB
+ * --
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * -/-/-
+ */
+
+package com.spotify.docker.client;
+
+import static com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility.ANY;
+import static com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility.NONE;
+
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.google.auto.value.AutoValue;
+import com.google.common.collect.ImmutableMap;
+import com.spotify.docker.client.messages.RegistryAuth;
+
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Represents the contents of the docker config.json file.
+ */
+@AutoValue
+@JsonAutoDetect(fieldVisibility = ANY, getterVisibility = NONE, setterVisibility = NONE)
+public abstract class DockerConfig {
+
+  @Nullable
+  @JsonProperty("credsHelpers")
+  public abstract ImmutableMap<String, String> credsHelpers();
+
+  @Nullable
+  @JsonProperty("auths")
+  public abstract ImmutableMap<String, RegistryAuth> auths();
+
+  @Nullable
+  @JsonProperty("HttpHeaders")
+  public abstract ImmutableMap<String, String> httpHeaders();
+
+  @Nullable
+  @JsonProperty("credsStore")
+  public abstract String credsStore();
+
+  @Nullable
+  @JsonProperty("detachKeys")
+  public abstract String detachKeys();
+
+  @Nullable
+  @JsonProperty("stackOrchestrator")
+  public abstract String stackOrchestrator();
+
+  @Nullable
+  @JsonProperty("psFormat")
+  public abstract String psFormat();
+
+  @Nullable
+  @JsonProperty("imagesFormat")
+  public abstract String imagesFormat();
+
+  @JsonCreator
+  public static DockerConfig create(
+          @JsonProperty("credsHelpers") final Map<String, String> credsHelpers,
+          @JsonProperty("auths") final Map<String, RegistryAuth> auths,
+          @JsonProperty("HttpHeaders") final Map<String, String> httpHeaders,
+          @JsonProperty("credsStore") final String credsStore,
+          @JsonProperty("detachKeys") final String detachKeys,
+          @JsonProperty("stackOrchestrator") final String stackOrchestrator,
+          @JsonProperty("psFormat") final String psFormat,
+          @JsonProperty("imagesFormat") final String imagesFormat) {
+    return new AutoValue_DockerConfig(
+        credsHelpers == null
+            ? ImmutableMap.<String, String>of()
+            : ImmutableMap.copyOf(credsHelpers),
+        auths == null
+            ? ImmutableMap.<String, RegistryAuth>of()
+            : ImmutableMap.copyOf(auths),
+        httpHeaders == null
+            ? ImmutableMap.<String, String>of()
+            : ImmutableMap.copyOf(httpHeaders),
+        credsStore,
+        detachKeys,
+        stackOrchestrator,
+        psFormat,
+        imagesFormat);
+  }
+}