CE-554 Implement precommit checks in couchbase repo

.flake8

@@ -0,0 +1,42 @@
+[flake8]
+ignore =
+    # Module level import not at top of file
+    E402
+    # Whitespace before ':'; Removed per Black documentation
+    E203
+    # Invalid escape sequence
+    W605
+    # Python3.7+ compatibility checks
+    W606
+    # Ambiguous variable name l
+    E741
+    # Line break occurred before a binary operator
+    W503
+    # Missing docstring in public module
+    D100
+    # Missing docstring in public class
+    D101
+    # Missing docstring in public method
+    D102
+    # Missing docstring in public function
+    D103
+    # Missing docstring in public package
+    D104
+    # Missing docstring in magic method
+    D105
+    # Missing docstring in __init__
+    D107
+    # One-line docstring should fit on one line with quotes
+    D200
+    # No blank lines allowed after function docstring
+    D202
+    # 1 blank line required between summary line and description
+    D205
+    # First line should end with a period
+    D400
+    # First line should be in imperative mood
+    D401
+max-line-length = 79
+max-complexity = 18
+select = B,C,D,E,F,W,T4,B9
+extend-ignore = E203

.isort.cfg

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+#
+# Copyright (c) 2022 by Delphix. All rights reserved.
+#
+
+[settings]
+default_section=THIRDPARTY
+
+extra_standard_library=posixpath,ntpath,Queue
+
+# Every import should try its best to be on one line
+force_single_line=True
+
+# Settings needed to be compatible with black
+multi_line_output=3
+include_trailing_comma=True
+force_grid_wrap=0
+use_parentheses=True
+line_length=79

.pre-commit-config.yaml

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+repos:
+-   repo: https://github.com/psf/black
+    rev: 22.3.0
+    hooks:
+    - id: black
+      exclude: >
+        (?x)^(
+        )$
+      args: [--line-length=79]
+-   repo: https://github.com/pycqa/flake8
+    rev: 3.9.2
+    hooks:
+    - id: flake8
+      exclude: >
+        (?x)^(
+        )$
+- repo: local
+  hooks:
+    - id: copyright
+      name: copyright
+      entry: copyright.sh
+      language: script
+      types: [text]
+      exclude: >
+          (?x)^(
+                  .flake8|
+                  .pre-commit-config.yaml|
+                  pyproject.toml|
+                  schema.json|
+                  .*__init__.py|
+                  src/templates/service_file_template.txt|
+                  src/config/logger_conf.ini|
+                  README.md|
+                  .github/workflows/codeql.yml|
+                  .github/CODEOWNERS|
+                  .isort.cfg|
+                  LICENSE|
+                  .gitignore|
+          )$

copyright.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+#
+# Copyright (c) 2022, 2023 by Delphix. All rights reserved.
+#
+
+function verify_copyright() {
+	file=$1
+	current_year=$(date +%Y)
+  if [[ $(grep -e "Copyright (c).*$current_year .*Delphix. All rights reserved." "$file") ]] ; then
+      return 0
+  else
+      echo "Copyright check failed for file: $file"
+      return 1
+ fi
+
+}
+
+code=0
+for file in "$@" ; do
+	verify_copyright "$file"
+	code=$(($? + $code))
+done
+exit $code