enable support of AuthenticationTokens

Author: Alexander Tkachenko

pom.xml

@@ -43,7 +43,8 @@
     <slf4j.version>1.7.25</slf4j.version>
 
     <!-- jenkins plugins versions -->
-    <jenkins-credentials.version>2.1.7</jenkins-credentials.version>
+    <jenkins-credentials.version>2.1.16</jenkins-credentials.version>
+    <jenkins-structs.version>1.19</jenkins-structs.version>
     <jenkins-plain-credentials.version>1.3</jenkins-plain-credentials.version>
 
     <!-- maven plugins versions -->
@@ -78,6 +79,22 @@
       <artifactId>plain-credentials</artifactId>
       <version>${jenkins-plain-credentials.version}</version>
     </dependency>
+    <dependency>
+      <groupId>org.jenkins-ci.plugins</groupId>
+      <artifactId>authentication-tokens</artifactId>
+      <version>1.3</version>
+    </dependency>
+    <dependency>
+      <groupId>org.jenkins-ci.plugins</groupId>
+      <artifactId>google-oauth-plugin</artifactId>
+      <version>0.8</version>
+    </dependency>
+    <dependency>
+      <groupId>org.jenkins-ci.plugins</groupId>
+      <artifactId>docker-commons</artifactId>
+      <version>1.14</version>
+    </dependency>
+
   </dependencies>
 
   <!-- just to fix enforcer RequireUpperBoundDeps -->

src/main/java/org/jenkinsci/plugins/kubernetes/auth/KubernetesAuth.java

@@ -0,0 +1,5 @@
+package org.jenkinsci.plugins.kubernetes.auth;
+
+public interface KubernetesAuth {
+
+}

src/main/java/org/jenkinsci/plugins/kubernetes/auth/KubernetesAuthCertificate.java

@@ -0,0 +1,32 @@
+package org.jenkinsci.plugins.kubernetes.auth;
+
+public class KubernetesAuthCertificate implements KubernetesAuth {
+    private final String certificate;
+
+    private final String key;
+
+    private final String password;
+
+
+   public KubernetesAuthCertificate(String certificate, String key, String password) {
+        this.certificate = certificate;
+        this.key = key;
+        this.password = password;
+    }
+
+    public KubernetesAuthCertificate(String certificate, String key) {
+        this(certificate, key, null);
+    }
+
+    public String getCertificate() {
+        return certificate;
+    }
+
+    public String getKey() {
+        return key;
+    }
+
+    public String getKeyPassword() {
+        return password;
+    }
+}

src/main/java/org/jenkinsci/plugins/kubernetes/auth/KubernetesAuthKubeconfig.java

@@ -0,0 +1,14 @@
+package org.jenkinsci.plugins.kubernetes.auth;
+
+public class KubernetesAuthKubeconfig implements KubernetesAuth {
+    private final String kubeconfig;
+
+    public KubernetesAuthKubeconfig(String kubeconfig) {
+        this.kubeconfig = kubeconfig;
+    }
+
+    public String getKubeconfig() {
+        return kubeconfig;
+    }
+
+}

src/main/java/org/jenkinsci/plugins/kubernetes/auth/KubernetesAuthToken.java

@@ -0,0 +1,13 @@
+package org.jenkinsci.plugins.kubernetes.auth;
+
+public class KubernetesAuthToken implements KubernetesAuth {
+    private final String token;
+
+    public KubernetesAuthToken(String token) {
+        this.token = token;
+    }
+
+    public String getToken() {
+        return token;
+    }
+}

src/main/java/org/jenkinsci/plugins/kubernetes/auth/KubernetesAuthUsernamePassword.java

@@ -0,0 +1,22 @@
+package org.jenkinsci.plugins.kubernetes.auth;
+
+public class KubernetesAuthUsernamePassword implements KubernetesAuth {
+    private final String username;
+
+    private final String password;
+
+
+    public KubernetesAuthUsernamePassword(String username, String password) {
+
+        this.username = username;
+        this.password = password;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+}

src/main/java/org/jenkinsci/plugins/kubernetes/credentials/GoogleRobotCredentialsTokenSource.java

@@ -0,0 +1,33 @@
+package org.jenkinsci.plugins.kubernetes.credentials;
+
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import jenkins.authentication.tokens.api.AuthenticationTokenException;
+import jenkins.authentication.tokens.api.AuthenticationTokenSource;
+import com.google.jenkins.plugins.credentials.oauth.GoogleRobotCredentials;
+import com.google.jenkins.plugins.credentials.oauth.GoogleOAuth2ScopeRequirement;
+import org.jenkinsci.plugins.kubernetes.auth.KubernetesAuthToken;
+
+import java.util.Collection;
+import java.util.Collections;
+
+/**
+ * Converts {@link GoogleRobotCredentials} to {@link String} token.
+ */
+@Extension
+public class GoogleRobotCredentialsTokenSource extends AuthenticationTokenSource<KubernetesAuthToken, GoogleRobotCredentials>  {
+    public GoogleRobotCredentialsTokenSource() {
+        super(KubernetesAuthToken.class, GoogleRobotCredentials.class);
+    }
+
+    @NonNull
+    @Override
+    public KubernetesAuthToken convert(@NonNull GoogleRobotCredentials credential) throws AuthenticationTokenException {
+        return new KubernetesAuthToken(credential.getAccessToken(new GoogleOAuth2ScopeRequirement() {
+            @Override
+            public Collection<String> getScopes() {
+                return Collections.singleton("https://www.googleapis.com/auth/cloud-platform");
+            }
+        }).getPlainText());
+    }
+}