Merge ~cjwatson/ols-charm-deps:apache-license into ols-charm-deps:master

[Colin Watson]

Apply the Apache License, version 2.0

Canonical's internal software licensing documentation says that charms should be licensed under Apache 2.0, so do so here in preparation for open-sourcing. Some of our charm dependencies are under different licenses, so I noted that explicitly in the `LICENSE` file.

[Guillermo Gonzalez (verterok)]

Do we need to include the license header on each file?

[Colin Watson (cjwatson)]

https://sites.google.com/a/canonical.com/operations/legal/software-licensing says "Add a notice at the top of each file you create", under "Source files". But I can take it off the YAML files if you like - I suspect it isn't all that vital there?

[Guillermo Gonzalez (verterok)]

as discussed in MM, this is based on https://sites.google.com/a/canonical.com/operations/legal/software-licensing

review: Approve

diff --git a/LICENSE b/LICENSE
 new file mode 100644
index 0000000..142874e
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,215 @@
+ols-layers is Copyright (C) 2019-2023 Canonical Ltd.
+
+Canonical Ltd ("Canonical") distributes the ols-layers source code under the
+Apache License, version 2.0.  The full text of this license is given below.
+
+Note that ols-layers incorporates some components that are under different
+licenses.  The strictest of these is the GNU Affero General Public License,
+version 3 ("AGPLv3"), used by interfaces/memcache; as a result, the
+effective license of the work as a whole is currently the AGPLv3.
+
+=========================================================================
+
+                                 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.
+
+=========================================================================
diff --git a/Makefile b/Makefile
index 0937905..6badd07 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 TEST_TIMEOUT := 900
 
 # /!\ Ensure that errors early in pipes cause failures, rather than
diff --git a/charm-dependencies b/charm-dependencies
index a054042..a4de8f2 100644
--- a/charm-dependencies
+++ b/charm-dependencies
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 interface                       @
 interface/nrpe-external-master  git+https://github.com/canonical-ols/nrpe-external-master-interface.git;revno=274a6fb
 interface/http                  git+https://github.com/juju-solutions/interface-http.git;revno=5134e94
diff --git a/layer/ols-celery/config.yaml b/layer/ols-celery/config.yaml
index 0bcb178..4ab6059 100644
--- a/layer/ols-celery/config.yaml
+++ b/layer/ols-celery/config.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 options:
   celery_default_worker_concurrency:
     type: int 
diff --git a/layer/ols-celery/layer.yaml b/layer/ols-celery/layer.yaml
index 3efa8df..408cc5e 100644
--- a/layer/ols-celery/layer.yaml
+++ b/layer/ols-celery/layer.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 includes: 
     - layer:ols
     - layer:leadership
diff --git a/layer/ols-celery/lib/ols/celery.py b/layer/ols-celery/lib/ols/celery.py
index 7ba1775..978ec9e 100644
--- a/layer/ols-celery/lib/ols/celery.py
+++ b/layer/ols-celery/lib/ols/celery.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 from charmhelpers.core import hookenv, host
 
 from ols import base
diff --git a/layer/ols-celery/metadata.yaml b/layer/ols-celery/metadata.yaml
index f90a800..efb9a24 100644
--- a/layer/ols-celery/metadata.yaml
+++ b/layer/ols-celery/metadata.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 name: ols-wsgi
 summary: <Fill in summary here>
 maintainer: Guillermo Gonzalez <[e-mail]>
diff --git a/layer/ols-celery/reactive/ols_celery.py b/layer/ols-celery/reactive/ols_celery.py
index 95fa1b9..3ce96be 100644
--- a/layer/ols-celery/reactive/ols_celery.py
+++ b/layer/ols-celery/reactive/ols_celery.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import os
 import subprocess
 
diff --git a/layer/ols-http/config.yaml b/layer/ols-http/config.yaml
index c8b894c..69631b5 100644
--- a/layer/ols-http/config.yaml
+++ b/layer/ols-http/config.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 options:
   # expose haproxy options for ops benefit
   haproxy_service_options:
diff --git a/layer/ols-http/layer.yaml b/layer/ols-http/layer.yaml
index 222e156..dd91b10 100644
--- a/layer/ols-http/layer.yaml
+++ b/layer/ols-http/layer.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 includes: 
     - layer:ols
     - interface:http
diff --git a/layer/ols-http/lib/ols/http.py b/layer/ols-http/lib/ols/http.py
index aec57f7..7ecc058 100644
--- a/layer/ols-http/lib/ols/http.py
+++ b/layer/ols-http/lib/ols/http.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import time
 import urllib.request
 
diff --git a/layer/ols-http/metadata.yaml b/layer/ols-http/metadata.yaml
index cf42356..0238aad 100644
--- a/layer/ols-http/metadata.yaml
+++ b/layer/ols-http/metadata.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 name: ols-http
 summary: <Fill in summary here>
 maintainer: Guillermo Gonzalez <[e-mail]>
diff --git a/layer/ols-http/reactive/ols_http.py b/layer/ols-http/reactive/ols_http.py
index 64ac372..d04c174 100644
--- a/layer/ols-http/reactive/ols_http.py
+++ b/layer/ols-http/reactive/ols_http.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import yaml
 
 from charms.reactive import remove_state, when, when_not
diff --git a/layer/ols-http/unit_tests/test_ols_http.py b/layer/ols-http/unit_tests/test_ols_http.py
index e40f6c1..f50c5eb 100644
--- a/layer/ols-http/unit_tests/test_ols_http.py
+++ b/layer/ols-http/unit_tests/test_ols_http.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import urllib
 
 import yaml
diff --git a/layer/ols-pg/actions.yaml b/layer/ols-pg/actions.yaml
index d3846d7..9bd549e 100644
--- a/layer/ols-pg/actions.yaml
+++ b/layer/ols-pg/actions.yaml
@@ -1,2 +1,16 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 migrate:
   description: Run all pending migrations.
diff --git a/layer/ols-pg/actions/migrate b/layer/ols-pg/actions/migrate
index 5083330..0520d08 100755
--- a/layer/ols-pg/actions/migrate
+++ b/layer/ols-pg/actions/migrate
@@ -1,5 +1,19 @@
 #!/usr/bin/env python3
 
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 # Load modules from $CHARM_DIR/lib
 import sys
 sys.path.append('lib')
diff --git a/layer/ols-pg/config.yaml b/layer/ols-pg/config.yaml
index 817aeb1..65b4fd3 100644
--- a/layer/ols-pg/config.yaml
+++ b/layer/ols-pg/config.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 options:
   db_name:
     type: string
diff --git a/layer/ols-pg/layer.yaml b/layer/ols-pg/layer.yaml
index acb1c0a..482ec63 100644
--- a/layer/ols-pg/layer.yaml
+++ b/layer/ols-pg/layer.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 includes: 
     - layer:ols
     - interface:pgsql
@@ -7,4 +21,4 @@ options:
             - libpq5
             - libpq-dev
             - gcc
-            - python3-dev
 \ No newline at end of file
+            - python3-dev
diff --git a/layer/ols-pg/lib/ols/postgres.py b/layer/ols-pg/lib/ols/postgres.py
index 58d4727..29fc6fa 100644
--- a/layer/ols-pg/lib/ols/postgres.py
+++ b/layer/ols-pg/lib/ols/postgres.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import os
 import yaml
 import subprocess
diff --git a/layer/ols-pg/metadata.yaml b/layer/ols-pg/metadata.yaml
index e659b07..d169879 100644
--- a/layer/ols-pg/metadata.yaml
+++ b/layer/ols-pg/metadata.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 name: ols-pg
 summary: <Fill in summary here>
 maintainer: Guillermo Gonzalez <[e-mail]>
diff --git a/layer/ols-pg/reactive/ols_pg.py b/layer/ols-pg/reactive/ols_pg.py
index 9ac4e4c..cd9b0f8 100644
--- a/layer/ols-pg/reactive/ols_pg.py
+++ b/layer/ols-pg/reactive/ols_pg.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 from charms.reactive import when_any, RelationBase
 from ols import postgres
 
diff --git a/layer/ols-wsgi/config.yaml b/layer/ols-wsgi/config.yaml
index 3c52197..df316d9 100644
--- a/layer/ols-wsgi/config.yaml
+++ b/layer/ols-wsgi/config.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 options:
   wsgi_workers:
     type: int
diff --git a/layer/ols-wsgi/layer.yaml b/layer/ols-wsgi/layer.yaml
index 0bd5517..19b7adb 100644
--- a/layer/ols-wsgi/layer.yaml
+++ b/layer/ols-wsgi/layer.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 includes: 
     - layer:ols-http
 options:
diff --git a/layer/ols-wsgi/lib/ols/gunicorn.py b/layer/ols-wsgi/lib/ols/gunicorn.py
index afa315a..b5520db 100755
--- a/layer/ols-wsgi/lib/ols/gunicorn.py
+++ b/layer/ols-wsgi/lib/ols/gunicorn.py
@@ -1,6 +1,20 @@
 #!/usr/bin/env python
 # vim: et ai ts=4 sw=4:
 
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import os
 import random
 import subprocess
diff --git a/layer/ols-wsgi/lib/ols/wsgi.py b/layer/ols-wsgi/lib/ols/wsgi.py
index 200e67c..0ec5e9f 100644
--- a/layer/ols-wsgi/lib/ols/wsgi.py
+++ b/layer/ols-wsgi/lib/ols/wsgi.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 from ols import base
 
 # derived configs #
diff --git a/layer/ols-wsgi/metadata.yaml b/layer/ols-wsgi/metadata.yaml
index 2a5c5cb..372f060 100644
--- a/layer/ols-wsgi/metadata.yaml
+++ b/layer/ols-wsgi/metadata.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 name: ols-wsgi
 summary: <Fill in summary here>
 maintainer: Guillermo Gonzalez <[e-mail]>
diff --git a/layer/ols-wsgi/reactive/ols_wsgi.py b/layer/ols-wsgi/reactive/ols_wsgi.py
index 5170371..fa1bbfe 100644
--- a/layer/ols-wsgi/reactive/ols_wsgi.py
+++ b/layer/ols-wsgi/reactive/ols_wsgi.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 from charms.reactive import helpers, hook, when, set_state, remove_state
 
 from ols import gunicorn, wsgi, base, http
diff --git a/layer/ols-wsgi/unit_tests/test_ols_wsgi.py b/layer/ols-wsgi/unit_tests/test_ols_wsgi.py
index 6fcaf66..2f3f2e7 100644
--- a/layer/ols-wsgi/unit_tests/test_ols_wsgi.py
+++ b/layer/ols-wsgi/unit_tests/test_ols_wsgi.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 from unittest.mock import patch, call
 
 from charms import layer
diff --git a/layer/ols/actions.yaml b/layer/ols/actions.yaml
index 652a6ef..2bb7002 100644
--- a/layer/ols/actions.yaml
+++ b/layer/ols/actions.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 debug:
   description: print the state of all relations
 show-config:
diff --git a/layer/ols/actions/debug b/layer/ols/actions/debug
index 106d567..f60b16d 100755
--- a/layer/ols/actions/debug
+++ b/layer/ols/actions/debug
@@ -1,6 +1,19 @@
 #!../.venv/bin/python
 # the above is hack. I think reactive should activate the venv before running
 # actions.
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
 
 from pprint import pformat
 from charmhelpers.core import hookenv
diff --git a/layer/ols/actions/show-config b/layer/ols/actions/show-config
index 5ea46c2..636e3cf 100755
--- a/layer/ols/actions/show-config
+++ b/layer/ols/actions/show-config
@@ -1,5 +1,19 @@
 #!../.venv/bin/python
 # the above is hack, reactive should activate the venv before running actions.
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import os
 import sys
 
diff --git a/layer/ols/config.yaml b/layer/ols/config.yaml
index c009768..4e0b685 100644
--- a/layer/ols/config.yaml
+++ b/layer/ols/config.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 options:
   install_sources:
     # description and type comes from the apt layer.
diff --git a/layer/ols/layer.yaml b/layer/ols/layer.yaml
index a9ab78c..a923980 100644
--- a/layer/ols/layer.yaml
+++ b/layer/ols/layer.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 includes: 
     - layer:basic
     - layer:apt
diff --git a/layer/ols/lib/ols/base.py b/layer/ols/lib/ols/base.py
index 5d3b74f..a3c4dc0 100644
--- a/layer/ols/lib/ols/base.py
+++ b/layer/ols/lib/ols/base.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import ast
 from collections import OrderedDict
 import errno
diff --git a/layer/ols/lib/ols/render.py b/layer/ols/lib/ols/render.py
index 2a6731c..1638811 100644
--- a/layer/ols/lib/ols/render.py
+++ b/layer/ols/lib/ols/render.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import os
 import subprocess
 
diff --git a/layer/ols/metadata.yaml b/layer/ols/metadata.yaml
index 3636e96..14e96ef 100644
--- a/layer/ols/metadata.yaml
+++ b/layer/ols/metadata.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 name: ols
 summary: <Fill in summary here>
 maintainer: Guillermo Gonzalez <[e-mail]>
diff --git a/layer/ols/reactive/ols.py b/layer/ols/reactive/ols.py
index 3463b8b..9b6a179 100644
--- a/layer/ols/reactive/ols.py
+++ b/layer/ols/reactive/ols.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import os
 from charms.reactive import hook, when, when_not, set_state, remove_state
 
diff --git a/layer/ols/unit_tests/base_fixtures.py b/layer/ols/unit_tests/base_fixtures.py
index cb49df6..33f45d1 100644
--- a/layer/ols/unit_tests/base_fixtures.py
+++ b/layer/ols/unit_tests/base_fixtures.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import os
 import shutil
 import sys
diff --git a/layer/ols/unit_tests/test_ols.py b/layer/ols/unit_tests/test_ols.py
index d0b386f..eede4ad 100644
--- a/layer/ols/unit_tests/test_ols.py
+++ b/layer/ols/unit_tests/test_ols.py
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 import io
 import os
 import subprocess
diff --git a/ols-vms.conf b/ols-vms.conf
index 1451513..ff6add3 100644
--- a/ols-vms.conf
+++ b/ols-vms.conf
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 vm.architecture = amd64
 vm.release = focal
 
diff --git a/pyproject.toml b/pyproject.toml
index da38ae0..120a19d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,17 @@
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 [tool.black]
 skip-string-normalization = true
 skip-magic-trailing-comma = true
diff --git a/setup-container b/setup-container
index 5a9dfe5..2e4a994 100755
--- a/setup-container
+++ b/setup-container
@@ -1,4 +1,18 @@
 #!/bin/sh
+# Copyright 2019-2023 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 # Do all the necessary magic to prepare and bootstrap the container
 
 # Barf if not uid 0
diff --git a/stubcharm/files/testservice/webapp.py b/stubcharm/files/testservice/webapp.py
index 0df6e43..b566fb4 100644
--- a/stubcharm/files/testservice/webapp.py
+++ b/stubcharm/files/testservice/webapp.py
@@ -1,5 +1,17 @@
 # -*- coding: utf-8 -*-
 # Copyright 2019 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
 
 
 def app(env, start_response):
diff --git a/stubcharm/layer.yaml b/stubcharm/layer.yaml
index 5624641..0d80408 100644
--- a/stubcharm/layer.yaml
+++ b/stubcharm/layer.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 repo: lp:stubcharm
 includes: 
     - layer:ols-wsgi
diff --git a/stubcharm/metadata.yaml b/stubcharm/metadata.yaml
index 5d29f16..4d1c10e 100644
--- a/stubcharm/metadata.yaml
+++ b/stubcharm/metadata.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 name: stubcharm
 summary: To test layers
 maintainer: Onlines Services <[e-mail]>
diff --git a/stubcharm/reactive/testservice.py b/stubcharm/reactive/testservice.py
index ff4e16a..0757645 100644
--- a/stubcharm/reactive/testservice.py
+++ b/stubcharm/reactive/testservice.py
@@ -1,3 +1,17 @@
+# Copyright 2019 Canonical Ltd.
+#
+# 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
+#
+#     https://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.
+
 from ols import base, postgres, celery
 
 from charms.reactive import (