Reorganize license files

This commit moves the apache and elastic license files into a new
root level `licenses` directory and rewrites the top level LICENSE.txt
to clarify the repository has a mix of apache and elastic licensed code.

Author: rjernst

LICENSE.txt

@@ -1,202 +1,13 @@
-
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
-      replaced with your own identifying information. (Don't include
-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
-      same "printed page" as the copyright notice for easier
-      identification within third-party archives.
-
-   Copyright [yyyy] [name of copyright owner]
-
-   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.
+Source code in this repository is variously licensed under the Apache License
+Version 2.0, an Apache compatible license, or the Elastic License. Outside of
+the "x-pack" folder, source code in a given file is licensed under the Apache
+License Version 2.0, unless otherwise noted at the beginning of the file or a
+LICENSE file present in the directory subtree declares a separate license.
+Within the "x-pack" folder, source code in a given file is licensed under the
+Elastic License, unless otherwise noted at the beginning of the file or a
+LICENSE file present in the directory subtree declares a separate license.
+
+The build produces two sets of binaries - one set that falls under the Elastic
+License and another set that falls under Apache License Version 2.0. The
+binaries that contain `-oss` in the artifact name are licensed under the Apache
+License Version 2.0.

build.gradle

@@ -40,10 +40,9 @@ subprojects {
   description = "Elasticsearch subproject ${project.path}"
 }
 
-Path rootPath = rootDir.toPath()
-// setup pom license info, but only for artifacts that are part of elasticsearch
-configure(subprojects.findAll { it.projectDir.toPath().startsWith(rootPath) }) {
-
+subprojects {
+  project.ext.licenseName = 'The Apache Software License, Version 2.0'
+  project.ext.licenseUrl = 'http://www.apache.org/licenses/LICENSE-2.0.txt'
   // we only use maven publish to add tasks for pom generation
   plugins.withType(MavenPublishPlugin).whenPluginAdded {
     publishing {
@@ -55,8 +54,8 @@ configure(subprojects.findAll { it.projectDir.toPath().startsWith(rootPath) }) {
             node.appendNode('inceptionYear', '2009')
 
             Node license = node.appendNode('licenses').appendNode('license')
-            license.appendNode('name', 'The Apache Software License, Version 2.0')
-            license.appendNode('url', 'http://www.apache.org/licenses/LICENSE-2.0.txt')
+            license.appendNode('name', project.licenseName)
+            license.appendNode('url', project.licenseUrl)
             license.appendNode('distribution', 'repo')
 
             Node developer = node.appendNode('developers').appendNode('developer')
@@ -68,7 +67,7 @@ configure(subprojects.findAll { it.projectDir.toPath().startsWith(rootPath) }) {
     }
   }
   plugins.withType(BuildPlugin).whenPluginAdded {
-    project.licenseFile = project.rootProject.file('LICENSE.txt')
+    project.licenseFile = project.rootProject.file('licenses/APACHE-LICENSE-2.0.txt')
     project.noticeFile = project.rootProject.file('NOTICE.txt')
   }
 }

buildSrc/src/main/groovy/org/elasticsearch/gradle/BuildPlugin.groovy

@@ -619,6 +619,7 @@ class BuildPlugin implements Plugin<Project> {
                 jarTask.metaInf {
                     from(project.licenseFile.parent) {
                         include project.licenseFile.name
+                        rename { 'LICENSE.txt' }
                     }
                     from(project.noticeFile.parent) {
                         include project.noticeFile.name

buildSrc/src/main/groovy/org/elasticsearch/gradle/plugin/PluginBuildPlugin.groovy

@@ -261,6 +261,7 @@ public class PluginBuildPlugin extends BuildPlugin {
         if (licenseFile != null) {
             project.bundlePlugin.from(licenseFile.parentFile) {
                 include(licenseFile.name)
+                rename { 'LICENSE.txt' }
             }
         }
         File noticeFile = project.pluginProperties.extension.noticeFile

distribution/archives/build.gradle

@@ -73,7 +73,14 @@ CopySpec archiveFiles(CopySpec modulesFiles, boolean oss) {
           pluginsDir.getParent()
         }
       }
-      with commonFiles
+      from(rootProject.projectDir) {
+        include 'README.textile'
+      }
+      from(rootProject.file('licenses')) {
+        include oss ? 'APACHE-LICENSE-2.0.txt' : 'ELASTIC-LICENSE.txt'
+        rename { 'LICENSE.txt' }
+      }
+
       with noticeFile
       from('../src') {
         include 'bin/*.exe'

distribution/build.gradle

@@ -303,12 +303,6 @@ configure(subprojects.findAll { ['archives', 'packages'].contains(it.name) }) {
       }
     }
 
-    commonFiles = copySpec {
-      from rootProject.projectDir
-      include 'LICENSE.txt'
-      include 'README.textile'
-    }
-
     noticeFile = copySpec {
       if (project.name == 'integ-test-zip') {
         from buildServerNotice
@@ -364,9 +358,9 @@ subprojects {
 
     String licenseText
     if (oss) {
-      licenseText = rootProject.file('LICENSE.txt').getText('UTF-8')
+      licenseText = rootProject.file('licenses/APACHE-LICENSE-2.0.txt').getText('UTF-8')
     } else {
-      licenseText = rootProject.file('x-pack/LICENSE.txt').getText('UTF-8')
+      licenseText = rootProject.file('licenses/ELASTIC-LICENSE.txt').getText('UTF-8')
     }
     // license text needs to be indented with a single space
     licenseText = ' ' + licenseText.replace('\n', '\n ') 

distribution/packages/build.gradle

@@ -114,11 +114,14 @@ Closure commonPackageConfig(String type, boolean oss) {
       into('bin') {
         with binFiles(type, oss)
       }
-      with copySpec {
-        with commonFiles
-        if (type == 'deb') {
-          // Deb gets a copyright file instead.
-          exclude 'LICENSE.txt'
+      from(rootProject.projectDir) {
+        include 'README.textile'
+      }
+      // Deb gets a copyright file instead.
+      if (type == 'rpm') {
+        from(rootProject.file('licenses')) {
+          include oss ? 'APACHE-LICENSE-2.0.txt' : 'ELASTIC-LICENSE.txt'
+          rename { 'LICENSE.txt' }
         }
       }
       into('modules') {