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
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+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+   Copyright [yyyy] [name of copyright owner]
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+   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
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+       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.
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+=========================================================================
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 (