Add jinja2 instrumentation

docs/ext/jinja2/jinja2.rst

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+OpenTelemetry Jinja2 Instrumentation
+====================================
+
+.. automodule:: opentelemetry.ext.jinja2
+    :members:
+    :undoc-members:
+    :show-inheritance:

ext/opentelemetry-ext-jinja2/CHANGELOG.md

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+# Changelog
+
+## Unreleased
+
+- Add jinja2 instrumentation ([#643](https://github.com/open-telemetry/opentelemetry-python/pull/643))

ext/opentelemetry-ext-jinja2/LICENSE

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ext/opentelemetry-ext-jinja2/MANIFEST.in

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+graft src
+graft tests
+global-exclude *.pyc
+global-exclude *.pyo
+global-exclude __pycache__/*
+include CHANGELOG.md
+include MANIFEST.in
+include README.rst
+include LICENSE

ext/opentelemetry-ext-jinja2/README.rst

@@ -0,0 +1,21 @@
+OpenTelemetry jinja2 integration
+================================
+
+|pypi|
+
+.. |pypi| image:: https://badge.fury.io/py/opentelemetry-ext-jinja2.svg
+   :target: https://pypi.org/project/opentelemetry-ext-jinja2/
+
+Installation
+------------
+
+::
+
+    pip install opentelemetry-ext-jinja2
+
+
+References
+----------
+
+* `OpenTelemetry jinja2 integration <https://opentelemetry-python.readthedocs.io/en/latest/ext/jinja2/jinja2.html>`_
+* `OpenTelemetry Project <https://opentelemetry.io/>`_

ext/opentelemetry-ext-jinja2/setup.cfg

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+# Copyright The OpenTelemetry Authors
+#
+# 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.
+#
+[metadata]
+name = opentelemetry-ext-jinja2
+description = OpenTelemetry jinja2 integration
+long_description = file: README.rst
+long_description_content_type = text/x-rst
+author = OpenTelemetry Authors
+author_email = cncf-opentelemetry-contributors@lists.cncf.io
+url = https://github.com/open-telemetry/opentelemetry-python/tree/master/ext/opentelemetry-ext-jinja2
+platforms = any
+license = Apache-2.0
+classifiers =
+    Development Status :: 4 - Beta
+    Intended Audience :: Developers
+    License :: OSI Approved :: Apache Software License
+    Programming Language :: Python
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+
+[options]
+package_dir=
+    =src
+packages=find_namespace:
+install_requires =
+    opentelemetry-api == 0.7.dev0
+    opentelemetry-auto-instrumentation == 0.7.dev0
+    jinja2~=2.7
+    wrapt >= 1.0.0, < 2.0.0
+
+[options.extras_require]
+test =
+    opentelemetry-test == 0.7.dev0
+
+[options.packages.find]
+where = src
+
+[options.entry_points]
+opentelemetry_instrumentor =
+    jinja2 = opentelemetry.ext.jinja2:Jinja2Instrumentor

ext/opentelemetry-ext-jinja2/setup.py

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+# Copyright The OpenTelemetry Authors
+#
+# 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.
+import os
+
+import setuptools
+
+BASE_DIR = os.path.dirname(__file__)
+VERSION_FILENAME = os.path.join(
+    BASE_DIR, "src", "opentelemetry", "ext", "jinja2", "version.py"
+)
+PACKAGE_INFO = {}
+with open(VERSION_FILENAME) as f:
+    exec(f.read(), PACKAGE_INFO)
+
+setuptools.setup(version=PACKAGE_INFO["__version__"])