redis: Porting redis instrumentation from contrib repo (open-telemetry#595)

Porting the existing redis instrumentation from the contrib repo to using the OpenTelemetry API and the OpenTelemetry Auto-instrumentation Instrumentor interface.

Similiar to the sqlalchemy PR, the main thing that will need updating is to remove the patch/unpatch methods once the instrumentor interface changes have been merged.

This is replacing open-telemetry#21

Co-authored-by: Mauricio Vásquez <[email protected]>
Co-authored-by: Leighton Chen <[email protected]>
Co-authored-by: Diego Hurtado <[email protected]>
Co-authored-by: Chris Kleinknecht <[email protected]>

Author: 5 people

.isort.cfg

@@ -15,4 +15,4 @@ multi_line_output=3
 skip=target
 skip_glob=**/gen/*,.venv*/*,venv*/*
 known_first_party=opentelemetry,opentelemetry_example_app
-known_third_party=psutil,pytest
+known_third_party=psutil,pytest,redis,redis_opentracing

tox.ini

@@ -87,6 +87,10 @@ envlist =
     ; opentelemetry-ext-grpc
     py3{4,5,6,7,8}-test-ext-grpc
 
+    ; opentelemetry-ext-redis
+    py3{4,5,6,7,8}-test-ext-redis
+    pypy3-test-ext-redis
+
     ; Coverage is temporarily disabled for pypy3 due to the pytest bug.
     ; pypy3-coverage
 
@@ -132,6 +136,7 @@ changedir =
   test-example-basic-tracer: docs/examples/basic_tracer/tests
   test-example-http: docs/examples/http/tests
   test-opentracing-shim: ext/opentelemetry-ext-opentracing-shim/tests
+  test-ext-redis: ext/opentelemetry-ext-redis/tests
 
 commands_pre =
 ; Install without -e to test the actual installation
@@ -179,6 +184,9 @@ commands_pre =
   pymysql: pip install {toxinidir}/ext/opentelemetry-ext-dbapi
   pymysql: pip install {toxinidir}/ext/opentelemetry-ext-pymysql
 
+  redis: pip install {toxinidir}/opentelemetry-auto-instrumentation
+  redis: pip install {toxinidir}/ext/opentelemetry-ext-redis[test]
+
   http-requests: pip install {toxinidir}/ext/opentelemetry-ext-http-requests[test]
 
   jaeger: pip install {toxinidir}/ext/opentelemetry-ext-jaeger
@@ -239,6 +247,7 @@ deps =
   Deprecated
   thrift
   pymongo
+  redis
   flask
   pymysql
   mysql-connector-python
@@ -262,10 +271,10 @@ deps =
 
 commands_pre =
   pip install -e {toxinidir}/opentelemetry-api \
+              -e {toxinidir}/opentelemetry-auto-instrumentation \
               -e {toxinidir}/opentelemetry-sdk \
               -e {toxinidir}/ext/opentelemetry-ext-http-requests \
               -e {toxinidir}/ext/opentelemetry-ext-wsgi \
-              -e {toxinidir}/opentelemetry-auto-instrumentation \
               -e {toxinidir}/ext/opentelemetry-ext-flask
 
 commands =
@@ -279,19 +288,22 @@ deps =
   pymongo ~= 3.1
   pymysql ~= 0.9.3
   psycopg2-binary ~= 2.8.4
+  redis ~= 3.3.11
 
 changedir =
   ext/opentelemetry-ext-docker-tests/tests
 
 commands_pre =
   pip install -e {toxinidir}/opentelemetry-api \
               -e {toxinidir}/opentelemetry-sdk \
+              -e {toxinidir}/opentelemetry-auto-instrumentation \
               -e {toxinidir}/tests/util \
               -e {toxinidir}/ext/opentelemetry-ext-dbapi \
               -e {toxinidir}/ext/opentelemetry-ext-mysql \
               -e {toxinidir}/ext/opentelemetry-ext-psycopg2 \
               -e {toxinidir}/ext/opentelemetry-ext-pymongo \
-              -e {toxinidir}/ext/opentelemetry-ext-pymysql
+              -e {toxinidir}/ext/opentelemetry-ext-pymysql \
+              -e {toxinidir}/ext/opentelemetry-ext-redis
   docker-compose up -d
   python check_availability.py
 commands =