chore: Drop 3.7 support

This is needed for multiple reasons,
most pressing is that the `importlib.metadata` is only available in 3.8,
and that would be needed to fix deprecation warnings about `pkg_resources`.

Signed-off-by: Ferenc Géczi <ferenc.geczi@ibm.com>

.circleci/config.yml

@@ -112,31 +112,6 @@ commands:
           path: htmlcov
 
 jobs:
-  python37:
-    docker:
-      - image: cimg/python:3.7.17
-      - image: cimg/postgres:9.6.24
-        environment:
-          POSTGRES_USER: root
-          POSTGRES_PASSWORD: passw0rd
-          POSTGRES_DB: instana_test_db
-      - image: cimg/mariadb:10.11.2
-        environment:
-          MYSQL_ROOT_PASSWORD: passw0rd
-          MYSQL_DATABASE: instana_test_db
-      - image: cimg/redis:5.0.14
-      - image: rabbitmq:3.9.13
-      - image: mongo:4.2.3
-      - image: vanmoof/pubsub-emulator
-    working_directory: ~/repo
-    steps:
-      - checkout
-      - pip-install-deps:
-          requirements: "tests/requirements-307.txt"
-      - run-tests-with-coverage-report
-      - store-pytest-results
-      - store-coverage-report
-
   python38:
     docker:
       - image: cimg/python:3.8.17
@@ -301,7 +276,7 @@ jobs:
     steps:
       - checkout
       - pip-install-deps:
-            requirements: "tests/requirements-307.txt"
+            requirements: "tests/requirements.txt"
       - store-pytest-results
       - run_sonarqube
 
@@ -323,7 +298,6 @@ workflows:
   version: 2
   build:
     jobs:
-      - python37
       - python38
       - python39
       - python310
@@ -334,7 +308,6 @@ workflows:
       - py39gevent_starlette
       - final_job:
           requires:
-            - python37
             - python38
             - python39
             - python310

.tekton/pipeline.yaml

@@ -25,8 +25,6 @@ spec:
         params:
           - name: imageDigest
             value:
-              # 3.7.17-bookworm
-              - "sha256:2011a37d2a08fe83dd9ff923e0f83bfd7290152e2e6afe359bde1453170d9bdc"
               # 3.8.18-bookworm
               - "sha256:625008535504ab68868ca06d1bdd868dee92a9878d5b55fc240af7ceb38b7183"
               # 3.9.18-bookworm

.tekton/python-tracer-prepuller.yaml

@@ -65,10 +65,6 @@ spec:
           # 3.3.1-bookworm
           image: ruby@sha256:5cf0004738f54bd67e4c4316394208ca38a6726eda7a1b0586d95601aad86e5d
           command: ["sh", "-c", "'true'"]
-        - name: prepuller-37
-          # 3.7.17-bookworm
-          image: "python@sha256:2011a37d2a08fe83dd9ff923e0f83bfd7290152e2e6afe359bde1453170d9bdc"
-          command: ["sh", "-c", "'true'"]
         - name: prepuller-38
           # 3.8.18-bookworm
           image: "python@sha256:625008535504ab68868ca06d1bdd868dee92a9878d5b55fc240af7ceb38b7183"

.tekton/run_unittests.sh

@@ -18,8 +18,6 @@ PYTHON_MINOR_VERSION="$(echo "${PYTHON_VERSION}" | cut -d'.' -f 2)"
 case "${TEST_CONFIGURATION}" in
 default)
   case "${PYTHON_MINOR_VERSION}" in
-    7)
-      export REQUIREMENTS='requirements-307.txt' ;;
     10 | 11)
       export REQUIREMENTS='requirements-310.txt' ;;
     12)

README.md

@@ -2,7 +2,7 @@
 
 The `instana` Python package collects key metrics and distributed traces for [Instana].
 
-This package supports Python 3.7 or greater.
+This package supports Python 3.8 or greater.
 
 Any feedback is welcome.  Happy Python visibility.
 

bin/aws-lambda/build_and_publish_lambda_layer.py

@@ -131,7 +131,7 @@
                              "Provides Instana tracing and monitoring of AWS Lambda functions built with Python",
                              "--license-info", "MIT", "--output", "json",
                              "--layer-name", LAYER_NAME, "--zip-file", aws_zip_filename,
-                             "--compatible-runtimes", "python3.7", "python3.8", "python3.9",
+                             "--compatible-runtimes", "python3.8", "python3.9",
                              "--profile", profile])
 
     json_data = json.loads(response)

example/asyncio/README.md

@@ -4,7 +4,7 @@ This directory includes an example asyncio application and client with aiohttp a
 
 # Requirements
 
-* Python 3.7 or greater
+* Python 3.8 or greater
 * instana, aiohttp and aio-pika Python packages installed
 * A RabbitMQ server with it's location specified in the `RABBITMQ_HOST` environment variable
 

pyproject.toml

@@ -9,7 +9,7 @@ dynamic = [
 ]
 description = "Python Distributed Tracing & Metrics Sensor for Instana."
 readme = "README.md"
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 license = "MIT"
 keywords = [
     "performance",
@@ -31,7 +31,6 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",

tests/apps/flask_app/app.py

@@ -13,12 +13,7 @@
 
 try:
     import boto3
-    # TODO: Remove branching when we drop support for Python 3.7
-    import sys
-    if sys.version_info >= (3, 8):
-      from moto import mock_aws
-    else:
-      from moto import mock_sqs as mock_aws
+    from moto import mock_aws
 except ImportError:
     # Doesn't matter.  We won't call routes using boto3
     # in test sets that don't install/test for it.

tests/clients/boto3/test_boto3_lambda.py

@@ -5,15 +5,11 @@
 import json
 
 import boto3
-# TODO: Remove branching when we drop support for Python 3.7
-from sys import version_info
-if version_info >= (3, 8):
-  from moto import mock_aws
+from moto import mock_aws
 
 from instana.singletons import tracer, agent
 from ...helpers import get_first_span_by_filter
 
-@unittest.skipIf(version_info < (3, 8), "Test skipped on Python < 3.8")
 class TestLambda(unittest.TestCase):
     def setUp(self):
         """ Clear all spans before a test run """

tests/clients/boto3/test_boto3_s3.py

@@ -4,12 +4,7 @@
 import os
 import unittest
 
-# TODO: Remove branching when we drop support for Python 3.7
-import sys
-if sys.version_info >= (3, 8):
-  from moto import mock_aws
-else:
-  from moto import mock_s3 as mock_aws
+from moto import mock_aws
 import boto3
 
 from instana.singletons import tracer, agent

tests/clients/boto3/test_boto3_secretsmanager.py

@@ -5,12 +5,7 @@
 import boto3
 import unittest
 
-# TODO: Remove branching when we drop support for Python 3.7
-import sys
-if sys.version_info >= (3, 8):
-  from moto import mock_aws
-else:
-  from moto import mock_secretsmanager as mock_aws
+from moto import mock_aws
 
 from instana.singletons import tracer, agent
 from ...helpers import get_first_span_by_filter

tests/clients/boto3/test_boto3_ses.py

@@ -5,12 +5,7 @@
 import boto3
 import unittest
 
-# TODO: Remove branching when we drop support for Python 3.7
-import sys
-if sys.version_info >= (3, 8):
-  from moto import mock_aws
-else:
-  from moto import mock_ses as mock_aws
+from moto import mock_aws
 
 from instana.singletons import tracer, agent
 from ...helpers import get_first_span_by_filter

tests/clients/boto3/test_boto3_sqs.py

@@ -6,12 +6,7 @@
 import unittest
 import urllib3
 
-# TODO: Remove branching when we drop support for Python 3.7
-import sys
-if sys.version_info >= (3, 8):
-  from moto import mock_aws
-else:
-  from moto import mock_sqs as mock_aws
+from moto import mock_aws
 
 import tests.apps.flask_app
 from instana.singletons import tracer, agent