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The following commit(s) were added to refs/heads/master by this push:
     new 915617d  NIFI-7299 Add basic OAuth2 token provider service that can 
fetch access tokens when supplied with appropriate credentials.
915617d is described below

commit 915617dbe76d6842bb971e193e7399c8eda76121
Author: Mike Thomsen <[email protected]>
AuthorDate: Sat Mar 28 10:57:11 2020 -0400

    NIFI-7299 Add basic OAuth2 token provider service that can fetch access 
tokens when supplied with appropriate credentials.
    
    Added skeleton of oauth2 provider.
    Added copy of our code.
    Refactored a few things.
    Updated apis to better match flow descriptions.
    Updated poms and other artifacts.
    Updated copyright notice.
    Updated LICENSE.
    
    This closes #4173
    
    Signed-off-by: Jeremy Dyer <[email protected]>
---
 nifi-assembly/pom.xml                              |   6 +
 .../nifi-oauth2-provider-api/pom.xml               |  40 ++++
 .../java/org/apache/nifi/oauth2/AccessToken.java   |  69 +++++++
 .../oauth2/AccessTokenAcquisitionException.java    |  28 +++
 .../apache/nifi/oauth2/OAuth2TokenProvider.java    |  58 ++++++
 .../nifi-oauth2-provider-nar/pom.xml               |  47 +++++
 .../src/main/resources/META-INF/LICENSE            | 202 +++++++++++++++++++++
 .../src/main/resources/META-INF/NOTICE             |  42 +++++
 .../nifi-oauth2-provider-service/pom.xml           |  98 ++++++++++
 .../nifi/oauth2/OAuth2TokenProviderImpl.java       | 155 ++++++++++++++++
 .../src/main/java/org/apache/nifi/oauth2/Util.java | 139 ++++++++++++++
 .../org.apache.nifi.controller.ControllerService   |  15 ++
 .../nifi/oauth2/OAuth2TokenProviderImplTest.java   | 194 ++++++++++++++++++++
 .../nifi-oauth2-provider-bundle/pom.xml            |  48 +++++
 .../nifi-standard-services-api-nar/pom.xml         |   6 +
 nifi-nar-bundles/nifi-standard-services/pom.xml    |   7 +-
 16 files changed, 1152 insertions(+), 2 deletions(-)

diff --git a/nifi-assembly/pom.xml b/nifi-assembly/pom.xml
index 7f96c87..4912c86 100644
--- a/nifi-assembly/pom.xml
+++ b/nifi-assembly/pom.xml
@@ -429,6 +429,12 @@ language governing permissions and limitations under the 
License. -->
         </dependency>
         <dependency>
             <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-oauth2-provider-nar</artifactId>
+            <version>1.12.0-SNAPSHOT</version>
+            <type>nar</type>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
             <artifactId>nifi-azure-nar</artifactId>
             <version>1.12.0-SNAPSHOT</version>
             <type>nar</type>
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/pom.xml 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/pom.xml
new file mode 100644
index 0000000..d7efc35
--- /dev/null
+++ b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/pom.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements. See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
https://maven.apache.org/xsd/maven-4.0.0.xsd";>
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.apache.nifi</groupId>
+        <artifactId>nifi-standard-services</artifactId>
+        <version>1.12.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>nifi-oauth2-provider-api</artifactId>
+    <packaging>jar</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-ssl-context-service-api</artifactId>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+</project>
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/src/main/java/org/apache/nifi/oauth2/AccessToken.java
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/src/main/java/org/apache/nifi/oauth2/AccessToken.java
new file mode 100644
index 0000000..2e261dd
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/src/main/java/org/apache/nifi/oauth2/AccessToken.java
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.nifi.oauth2;
+
+public class AccessToken {
+    private String accessToken;
+    private String refreshToken;
+    private String tokenType;
+    private Integer expires;
+    private String scope;
+
+    private Long fetchTime;
+
+    public AccessToken(String accessToken,
+                       String refreshToken,
+                       String tokenType,
+                       Integer expires,
+                       String scope) {
+        this.accessToken = accessToken;
+        this.tokenType = tokenType;
+        this.refreshToken = refreshToken;
+        this.expires = expires;
+        this.scope = scope;
+        this.fetchTime = System.currentTimeMillis();
+    }
+
+    public String getAccessToken() {
+        return accessToken;
+    }
+
+    public String getRefreshToken() {
+        return refreshToken;
+    }
+
+    public String getTokenType() {
+        return tokenType;
+    }
+
+    public Integer getExpires() {
+        return expires;
+    }
+
+    public String getScope() {
+        return scope;
+    }
+
+    public Long getFetchTime() {
+        return fetchTime;
+    }
+
+    public boolean isExpired() {
+        return System.currentTimeMillis() >= ( fetchTime + (expires * 1000) );
+    }
+}
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/src/main/java/org/apache/nifi/oauth2/AccessTokenAcquisitionException.java
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/src/main/java/org/apache/nifi/oauth2/AccessTokenAcquisitionException.java
new file mode 100644
index 0000000..dc85a3a
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/src/main/java/org/apache/nifi/oauth2/AccessTokenAcquisitionException.java
@@ -0,0 +1,28 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.nifi.oauth2;
+
+public class AccessTokenAcquisitionException extends Exception {
+    public AccessTokenAcquisitionException(String message) {
+        super(message);
+    }
+
+    public AccessTokenAcquisitionException(Throwable t) {
+        super(t);
+    }
+}
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/src/main/java/org/apache/nifi/oauth2/OAuth2TokenProvider.java
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/src/main/java/org/apache/nifi/oauth2/OAuth2TokenProvider.java
new file mode 100644
index 0000000..964ae43
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-api/src/main/java/org/apache/nifi/oauth2/OAuth2TokenProvider.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.nifi.oauth2;
+
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.controller.ControllerService;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.ssl.SSLContextService;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Interface for defining a credential-providing controller service for oauth2 
processes.
+ */
+public interface OAuth2TokenProvider extends ControllerService {
+    PropertyDescriptor SSL_CONTEXT = new PropertyDescriptor.Builder()
+            .name("oauth2-ssl-context")
+            .displayName("SSL Context")
+            .addValidator(Validator.VALID)
+            .identifiesControllerService(SSLContextService.class)
+            .required(false)
+            .build();
+    PropertyDescriptor ACCESS_TOKEN_URL = new PropertyDescriptor.Builder()
+            .name("oauth2-access-token-url")
+            .displayName("Access Token Url")
+            .description("The full endpoint of the URL where access tokens are 
handled.")
+            .required(true)
+            .defaultValue("")
+            .addValidator(Validator.VALID)
+            
.expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
+            .build();
+
+    List<PropertyDescriptor> PROPERTIES = 
Collections.unmodifiableList(Arrays.asList(
+            SSL_CONTEXT, ACCESS_TOKEN_URL
+    ));
+
+    AccessToken getAccessTokenByPassword(String clientId, String clientSecret, 
String username, String password) throws AccessTokenAcquisitionException;
+    AccessToken getAccessTokenByClientCredentials(String clientId, String 
clientSecret) throws AccessTokenAcquisitionException;
+    AccessToken refreshToken(AccessToken refreshThis) throws 
AccessTokenAcquisitionException;
+}
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-nar/pom.xml
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-nar/pom.xml
new file mode 100644
index 0000000..6e93992
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-nar/pom.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements. See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
https://maven.apache.org/xsd/maven-4.0.0.xsd";>
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.apache.nifi</groupId>
+        <artifactId>nifi-oauth2-provider-bundle</artifactId>
+        <version>1.12.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>nifi-oauth2-provider-nar</artifactId>
+    <version>1.12.0-SNAPSHOT</version>
+    <packaging>nar</packaging>
+    <properties>
+        <maven.javadoc.skip>true</maven.javadoc.skip>
+        <source.skip>true</source.skip>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-standard-services-api-nar</artifactId>
+            <version>1.12.0-SNAPSHOT</version>
+            <type>nar</type>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-oauth2-provider-service</artifactId>
+            <version>1.12.0-SNAPSHOT</version>
+        </dependency>
+    </dependencies>
+
+</project>
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-nar/src/main/resources/META-INF/LICENSE
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-nar/src/main/resources/META-INF/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-nar/src/main/resources/META-INF/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
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diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-nar/src/main/resources/META-INF/NOTICE
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-nar/src/main/resources/META-INF/NOTICE
new file mode 100644
index 0000000..9f75a9d
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-nar/src/main/resources/META-INF/NOTICE
@@ -0,0 +1,42 @@
+nifi-oauth2-provider-nar
+Copyright 2014-2020 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+******************
+Apache Software License v2
+******************
+
+
+  (ASLv2) Apache Commons Lang
+    The following NOTICE information applies:
+      Apache Commons Lang
+      Copyright 2001-2011 The Apache Software Foundation
+
+
+  (ASLv2) Jackson Core ASL
+      The following NOTICE information applies:
+        This product currently only contains code developed by authors
+        of specific components, as identified by the source code files;
+        if such notes are missing files have been created by
+        Tatu Saloranta.
+
+        For additional credits (generally to people who reported problems)
+        see CREDITS file.
+
+  (ASLv2) Jackson Mapper ASL
+      The following NOTICE information applies:
+        This product currently only contains code developed by authors
+        of specific components, as identified by the source code files;
+        if such notes are missing files have been created by
+        Tatu Saloranta.
+
+        For additional credits (generally to people who reported problems)
+        see CREDITS file.
+
+  (ASLv2) OkHttp Client
+         * LICENSE:
+           * okhttp/third_party/okhttp/LICENSE (Apache License 2.0)
+         * HOMEPAGE:
+           * https://github.com/square/okhttp
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/pom.xml
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/pom.xml
new file mode 100644
index 0000000..14dadf9
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/pom.xml
@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements. See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
https://maven.apache.org/xsd/maven-4.0.0.xsd";>
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.apache.nifi</groupId>
+        <artifactId>nifi-oauth2-provider-bundle</artifactId>
+        <version>1.12.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>nifi-oauth2-provider-service</artifactId>
+    <packaging>jar</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-oauth2-provider-api</artifactId>
+            <version>1.12.0-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-utils</artifactId>
+            <version>1.12.0-SNAPSHOT</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-record</artifactId>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-ssl-context-service-api</artifactId>
+            <version>1.12.0-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.9</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>log4j-over-slf4j</artifactId>
+        </dependency>
+        <!-- test dependencies -->
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-mock</artifactId>
+            <version>1.12.0-SNAPSHOT</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>okhttp</artifactId>
+            <version>3.14.4</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.10.0</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-standard-web-test-utils</artifactId>
+            <version>1.12.0-SNAPSHOT</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.jetty</groupId>
+            <artifactId>jetty-server</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+</project>
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/main/java/org/apache/nifi/oauth2/OAuth2TokenProviderImpl.java
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/main/java/org/apache/nifi/oauth2/OAuth2TokenProviderImpl.java
new file mode 100644
index 0000000..dfae289
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/main/java/org/apache/nifi/oauth2/OAuth2TokenProviderImpl.java
@@ -0,0 +1,155 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.nifi.oauth2;
+
+import okhttp3.FormBody;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.RequestBody;
+import okhttp3.Response;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnEnabled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.controller.AbstractControllerService;
+import org.apache.nifi.controller.ConfigurationContext;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.ssl.SSLContextService;
+import org.apache.nifi.security.util.SslContextFactory;
+import org.apache.nifi.util.StringUtils;
+
+import javax.net.ssl.SSLContext;
+import java.io.IOException;
+import java.util.List;
+
+import static org.apache.nifi.oauth2.Util.parseTokenResponse;
+
+@Tags({"oauth2", "provider", "authorization" })
+@CapabilityDescription("This controller service provides a way of working with 
access and refresh tokens via the " +
+        "password and client_credential grant flows in the OAuth2 
specification. It is meant to provide a way for components " +
+        "to get a token from an oauth2 provider and pass that token as a part 
of a header to another service.")
+public class OAuth2TokenProviderImpl extends AbstractControllerService 
implements OAuth2TokenProvider {
+    @Override
+    public List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+        return PROPERTIES;
+    }
+
+    private String resourceServerUrl;
+    private SSLContext sslContext;
+    private SSLContextService sslContextService;
+
+    @OnEnabled
+    public void onEnabled(ConfigurationContext context) {
+        resourceServerUrl = 
context.getProperty(ACCESS_TOKEN_URL).evaluateAttributeExpressions().getValue();
+
+        sslContextService = 
context.getProperty(SSL_CONTEXT).asControllerService(SSLContextService.class);
+
+        sslContext = sslContextService == null ? null : 
sslContextService.createSSLContext(SslContextFactory.ClientAuth.NONE);
+    }
+
+
+    @Override
+    public AccessToken getAccessTokenByPassword(String clientId, String 
clientSecret,
+                                                String username, String 
password) throws AccessTokenAcquisitionException {
+        OkHttpClient.Builder builder = getClientBuilder();
+        OkHttpClient client = builder.build();
+
+        RequestBody body = new FormBody.Builder()
+                .add("username", username)
+                .add("password", password)
+                .add("client_id", clientId)
+                .add("client_secret", clientSecret)
+                .add("grant_type", "password")
+                .build();
+
+        Request newRequest = new Request.Builder()
+                .url(resourceServerUrl)
+                .post(body)
+                .build();
+
+        return executePost(client, newRequest);
+    }
+
+    private OkHttpClient.Builder getClientBuilder() {
+        OkHttpClient.Builder clientBuilder = new OkHttpClient.Builder();
+
+        if (sslContext != null) {
+            try {
+                Util.setSslSocketFactory(clientBuilder, sslContextService, 
sslContext, false);
+            } catch (Exception e) {
+                throw new ProcessException(e);
+            }
+        }
+
+        return clientBuilder;
+    }
+
+    private AccessToken executePost(OkHttpClient httpClient, Request 
newRequest) throws AccessTokenAcquisitionException {
+        try {
+            Response response = httpClient.newCall(newRequest).execute();
+            String body = response.body().string();
+            if (response.code() >= 300) {
+                getLogger().error(String.format("Bad response from the server 
during oauth2 request:\n%s", body));
+                throw new AccessTokenAcquisitionException(String.format("Got 
HTTP %d during oauth2 request.", response.code()));
+            }
+
+            return parseTokenResponse(body);
+        } catch (IOException e) {
+            throw new AccessTokenAcquisitionException(e);
+        }
+    }
+
+    @Override
+    public AccessToken getAccessTokenByClientCredentials(String clientId, 
String clientSecret) throws AccessTokenAcquisitionException {
+        OkHttpClient.Builder builder = getClientBuilder();
+        OkHttpClient client = builder.build();
+
+        RequestBody body = new FormBody.Builder()
+                .add("grant_type", "client_credentials")
+                .add("client_id", clientId)
+                .add("client_secret", clientSecret)
+                .build();
+
+        Request newRequest = new Request.Builder()
+                .url(resourceServerUrl)
+                .post(body)
+                .build();
+
+        return executePost(client, newRequest);
+    }
+
+    @Override
+    public AccessToken refreshToken(AccessToken refreshThis) throws 
AccessTokenAcquisitionException {
+        if (StringUtils.isEmpty(refreshThis.getRefreshToken())) {
+            throw new ProcessException("Missing refresh token. Refresh cannot 
happen.");
+        }
+        OkHttpClient.Builder builder = getClientBuilder();
+        OkHttpClient client = builder.build();
+        RequestBody body = new FormBody.Builder()
+            .add("grant_type", "refresh_token")
+            .add("refresh_token", refreshThis.getRefreshToken())
+            .build();
+
+        Request newRequest = new Request.Builder()
+                .url(resourceServerUrl)
+                .post(body)
+                .build();
+
+        return executePost(client, newRequest);
+    }
+}
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/main/java/org/apache/nifi/oauth2/Util.java
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/main/java/org/apache/nifi/oauth2/Util.java
new file mode 100644
index 0000000..9ef0038
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/main/java/org/apache/nifi/oauth2/Util.java
@@ -0,0 +1,139 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.nifi.oauth2;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import okhttp3.OkHttpClient;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.ssl.SSLContextService;
+import org.apache.nifi.util.StringUtils;
+
+import javax.net.ssl.KeyManager;
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLSocketFactory;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.TrustManagerFactory;
+import javax.net.ssl.X509TrustManager;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.security.KeyManagementException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.CertificateException;
+import java.util.Map;
+
+public class Util {
+    private static final ObjectMapper MAPPER = new ObjectMapper();
+
+    /**
+     * This code as taken from the InvokeHttp processor from Apache NiFi 
1.10-SNAPSHOT found here:
+     *
+     * 
https://github.com/apache/nifi/blob/1cadc722229ad50cf569ee107eaeeb95dc216ea2/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/InvokeHTTP.java
+     */
+    public static void setSslSocketFactory(OkHttpClient.Builder 
okHttpClientBuilder, SSLContextService sslService, SSLContext sslContext, 
boolean setAsSocketFactory)
+            throws IOException, KeyStoreException, CertificateException, 
NoSuchAlgorithmException, UnrecoverableKeyException, KeyManagementException {
+
+        final KeyManagerFactory keyManagerFactory = 
KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
+        final TrustManagerFactory trustManagerFactory = 
TrustManagerFactory.getInstance("X509");
+        // initialize the KeyManager array to null and we will overwrite later 
if a keystore is loaded
+        KeyManager[] keyManagers = null;
+
+        // we will only initialize the keystore if properties have been 
supplied by the SSLContextService
+        if (sslService.isKeyStoreConfigured()) {
+            final String keystoreLocation = sslService.getKeyStoreFile();
+            final String keystorePass = sslService.getKeyStorePassword();
+            final String keystoreType = sslService.getKeyStoreType();
+
+            // prepare the keystore
+            final KeyStore keyStore = KeyStore.getInstance(keystoreType);
+
+            try (FileInputStream keyStoreStream = new 
FileInputStream(keystoreLocation)) {
+                keyStore.load(keyStoreStream, keystorePass.toCharArray());
+            }
+
+            keyManagerFactory.init(keyStore, keystorePass.toCharArray());
+            keyManagers = keyManagerFactory.getKeyManagers();
+        }
+
+        // we will only initialize the truststure if properties have been 
supplied by the SSLContextService
+        if (sslService.isTrustStoreConfigured()) {
+            // load truststore
+            final String truststoreLocation = sslService.getTrustStoreFile();
+            final String truststorePass = sslService.getTrustStorePassword();
+            final String truststoreType = sslService.getTrustStoreType();
+
+            KeyStore truststore = KeyStore.getInstance(truststoreType);
+            truststore.load(new FileInputStream(truststoreLocation), 
truststorePass.toCharArray());
+            trustManagerFactory.init(truststore);
+        }
+
+         /*
+            TrustManagerFactory.getTrustManagers returns a trust manager for 
each type of trust material. Since we are getting a trust manager factory that 
uses "X509"
+            as it's trust management algorithm, we are able to grab the first 
(and thus the most preferred) and use it as our x509 Trust Manager
+            
https://docs.oracle.com/javase/8/docs/api/javax/net/ssl/TrustManagerFactory.html#getTrustManagers--
+         */
+        final X509TrustManager x509TrustManager;
+        TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
+        if (trustManagers[0] != null) {
+            x509TrustManager = (X509TrustManager) trustManagers[0];
+        } else {
+            throw new IllegalStateException("List of trust managers is null");
+        }
+
+        // if keystore properties were not supplied, the keyManagers array 
will be null
+        sslContext.init(keyManagers, trustManagerFactory.getTrustManagers(), 
null);
+
+        final SSLSocketFactory sslSocketFactory = 
sslContext.getSocketFactory();
+        okHttpClientBuilder.sslSocketFactory(sslSocketFactory, 
x509TrustManager);
+        if (setAsSocketFactory) {
+            okHttpClientBuilder.socketFactory(sslSocketFactory);
+        }
+    }
+
+    public static final String KEY_ACCESS_TOKEN = "access_token";
+    public static final String KEY_REFRESH_TOKEN = "refresh_token";
+    public static final String KEY_EXPIRES = "expires_in";
+    public static final String KEY_TOKEN_TYPE = "token_type";
+    public static final String KEY_SCOPE = "scope";
+
+    public static AccessToken parseTokenResponse(String rawResponse) {
+        try {
+            Map<String, Object> parsed = MAPPER.readValue(rawResponse, 
Map.class);
+            String accessToken = (String)parsed.get(KEY_ACCESS_TOKEN);
+            String refreshToken = (String)parsed.get(KEY_REFRESH_TOKEN);
+            Integer expires = (Integer)parsed.get(KEY_EXPIRES);
+            String tokenType = (String)parsed.get(KEY_TOKEN_TYPE);
+            String scope = (String)parsed.get(KEY_SCOPE);
+
+            if (StringUtils.isEmpty(accessToken)) {
+                throw new Exception(String.format("Missing value for %s", 
KEY_ACCESS_TOKEN));
+            }
+
+            if (StringUtils.isEmpty(tokenType)) {
+                throw new Exception(String.format("Missing value for %s", 
KEY_TOKEN_TYPE));
+            }
+
+            return new AccessToken(accessToken, refreshToken, tokenType, 
expires, scope);
+        } catch (Exception ex) {
+            throw new ProcessException(ex);
+        }
+    }
+}
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/main/resources/META-INF/services/org.apache.nifi.controller.ControllerService
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/main/resources/META-INF/services/org.apache.nifi.controller.ControllerService
new file mode 100644
index 0000000..75e29d0
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/main/resources/META-INF/services/org.apache.nifi.controller.ControllerService
@@ -0,0 +1,15 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+org.apache.nifi.oauth2.OAuth2TokenProviderImpl
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/test/java/org/apache/nifi/oauth2/OAuth2TokenProviderImplTest.java
 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/test/java/org/apache/nifi/oauth2/OAuth2TokenProviderImplTest.java
new file mode 100644
index 0000000..83d56d3
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/nifi-oauth2-provider-service/src/test/java/org/apache/nifi/oauth2/OAuth2TokenProviderImplTest.java
@@ -0,0 +1,194 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.nifi.oauth2;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.commons.lang3.SystemUtils;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.util.TestRunner;
+import org.apache.nifi.util.TestRunners;
+import org.apache.nifi.web.util.TestServer;
+import org.eclipse.jetty.server.Request;
+import org.junit.Assume;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.eclipse.jetty.server.handler.AbstractHandler;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+public class OAuth2TokenProviderImplTest {
+    private TestRunner runner;
+    private static TestServer server;
+    private static String url;
+    private OAuth2TokenProvider oAuth2TokenProvider;
+
+    private static FakeOAuth2Server handler;
+
+    @BeforeClass
+    public static void beforeClass() throws Exception {
+        Assume.assumeTrue("Test only runs on *nix", 
!SystemUtils.IS_OS_WINDOWS);
+        // useful for verbose logging output
+        // don't commit this with this property enabled, or any 'mvn test' 
will be really verbose
+        // 
System.setProperty("org.slf4j.simpleLogger.log.nifi.processors.standard", 
"debug");
+
+        // create a Jetty server on a random port
+        server = new TestServer();
+        server.startServer();
+
+        // this is the base url with the random port
+        url = server.getUrl();
+
+        handler = new FakeOAuth2Server();
+
+        server.addHandler(handler);
+    }
+
+    @Before
+    public void setup() throws Exception {
+        runner = TestRunners.newTestRunner(new AbstractProcessor() {
+            @Override
+            public void onTrigger(ProcessContext context, ProcessSession 
session) throws ProcessException {
+
+            }
+        });
+        oAuth2TokenProvider = new OAuth2TokenProviderImpl();
+        runner.addControllerService("provider", oAuth2TokenProvider);
+        runner.setProperty(oAuth2TokenProvider, 
OAuth2TokenProvider.ACCESS_TOKEN_URL, url);
+        runner.enableControllerService(oAuth2TokenProvider);
+        runner.assertValid();
+    }
+
+    @Test
+    public void testClientCredentialGrant() {
+        Exception ex = null;
+        AccessToken token = null;
+        try {
+            token = oAuth2TokenProvider.getAccessTokenByClientCredentials(
+                    "test-client",
+                    UUID.randomUUID().toString()
+            );
+        } catch (AccessTokenAcquisitionException e) {
+            ex = e;
+        } finally {
+            commonTest(ex, token);
+        }
+    }
+
+    @Test
+    public void testErrorHandler() {
+        Exception ex = null;
+
+        try {
+            handler.setThrowException(true);
+            oAuth2TokenProvider.getAccessTokenByClientCredentials(
+                    "test-client",
+                    UUID.randomUUID().toString()
+            );
+        } catch (AccessTokenAcquisitionException e) {
+            ex = e;
+        } finally {
+            handler.setThrowException(false);
+            assertTrue(ex instanceof AccessTokenAcquisitionException);
+        }
+    }
+
+    @Test
+    public void testPasswordGrant() {
+        Exception ex = null;
+        AccessToken token = null;
+        try {
+            token = oAuth2TokenProvider.getAccessTokenByPassword(
+                    "test-client",
+                    UUID.randomUUID().toString(),
+                    "user",
+                    "password"
+            );
+        } catch (AccessTokenAcquisitionException e) {
+            ex = e;
+        } finally {
+            commonTest(ex, token);
+        }
+    }
+
+    @Test
+    public void testRefreshToken() {
+        Exception ex = null;
+        AccessToken token = null;
+        try {
+            token = oAuth2TokenProvider.refreshToken(
+                    new AccessToken("token", "refresh", "BEARER", 300, "test")
+            );
+        } catch (AccessTokenAcquisitionException e) {
+            ex = e;
+        } finally {
+            commonTest(ex, token);
+        }
+    }
+
+    private void commonTest(Exception ex, AccessToken token) {
+        assertNull(ex);
+        assertNotNull(token);
+        assertEquals("access token", token.getAccessToken());
+        assertEquals(300, token.getExpires().intValue());
+        assertEquals("BEARER", token.getTokenType());
+        assertFalse(token.isExpired());
+    }
+
+    public static final class FakeOAuth2Server extends AbstractHandler {
+        boolean throwException = false;
+
+        public void setThrowException(boolean throwException) {
+            this.throwException = throwException;
+        }
+
+        @Override
+        public void handle(String target, Request baseRequest, 
HttpServletRequest request, HttpServletResponse response) throws IOException, 
ServletException {
+            baseRequest.setHandled(true);
+
+            if (throwException) {
+                response.setStatus(500);
+            } else {
+                Map<String, Object> token = new HashMap<>();
+                token.put("access_token", "access token");
+                token.put("refresh_token", "refresh token");
+                token.put("token_type", "BEARER");
+                token.put("expires_in", 300);
+                token.put("scope", "test scope");
+
+                response.setContentType("application/json");
+                response.getWriter().write(new 
ObjectMapper().writeValueAsString(token));
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/pom.xml 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/pom.xml
new file mode 100644
index 0000000..e851fa6
--- /dev/null
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-oauth2-provider-bundle/pom.xml
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements. See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
https://maven.apache.org/xsd/maven-4.0.0.xsd";>
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.nifi</groupId>
+        <artifactId>nifi-standard-services</artifactId>
+        <version>1.12.0-SNAPSHOT</version>
+    </parent>
+
+    <groupId>org.apache.nifi</groupId>
+    <artifactId>nifi-oauth2-provider-bundle</artifactId>
+    <version>1.12.0-SNAPSHOT</version>
+    <packaging>pom</packaging>
+
+    <modules>
+        <module>nifi-oauth2-provider-service</module>
+        <module>nifi-oauth2-provider-nar</module>
+    </modules>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.rat</groupId>
+                <artifactId>apache-rat-plugin</artifactId>
+                <configuration>
+                    <excludes combine.children="append">
+                        <exclude>src/test/resources/fake.keytab</exclude>
+                        <exclude>src/test/resources/krb5.conf</exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>
diff --git 
a/nifi-nar-bundles/nifi-standard-services/nifi-standard-services-api-nar/pom.xml
 
b/nifi-nar-bundles/nifi-standard-services/nifi-standard-services-api-nar/pom.xml
index acec0ad..3e66118 100644
--- 
a/nifi-nar-bundles/nifi-standard-services/nifi-standard-services-api-nar/pom.xml
+++ 
b/nifi-nar-bundles/nifi-standard-services/nifi-standard-services-api-nar/pom.xml
@@ -66,6 +66,12 @@
         </dependency>
         <dependency>
             <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-oauth2-provider-api</artifactId>
+            <version>1.12.0-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
             <artifactId>nifi-rules-engine-service-api</artifactId>
             <version>1.12.0-SNAPSHOT</version>
             <scope>compile</scope>
diff --git a/nifi-nar-bundles/nifi-standard-services/pom.xml 
b/nifi-nar-bundles/nifi-standard-services/pom.xml
index aecf01e..b148513 100644
--- a/nifi-nar-bundles/nifi-standard-services/pom.xml
+++ b/nifi-nar-bundles/nifi-standard-services/pom.xml
@@ -13,7 +13,8 @@
   See the License for the specific language governing permissions and
   limitations under the License.
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
https://maven.apache.org/xsd/maven-4.0.0.xsd";>
+<project xmlns="http://maven.apache.org/POM/4.0.0"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
https://maven.apache.org/xsd/maven-4.0.0.xsd";>
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.apache.nifi</groupId>
@@ -23,6 +24,8 @@
     <artifactId>nifi-standard-services</artifactId>
     <packaging>pom</packaging>
     <modules>
+        <module>nifi-oauth2-provider-api</module>
+        <module>nifi-oauth2-provider-bundle</module>
         <module>nifi-distributed-cache-client-service-api</module>
         <module>nifi-distributed-cache-services-bundle</module>
         <module>nifi-load-distribution-service-api</module>
@@ -37,7 +40,7 @@
         <module>nifi-dbcp-service-bundle</module>
         <module>nifi-hbase-client-service-api</module>
         <module>nifi-hbase_1_1_2-client-service-bundle</module>
-       <module>nifi-hbase_2-client-service-bundle</module>
+        <module>nifi-hbase_2-client-service-bundle</module>
         <module>nifi-schema-registry-service-api</module>
         <module>nifi-record-serialization-service-api</module>
         <module>nifi-record-serialization-services-bundle</module>

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