HTTP155 Initial commit for open source Flink

.checkstyle

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+<?xml version="1.0" encoding="UTF-8"?>
+
+<fileset-config file-format-version="1.2.0" simple-config="false" sync-formatter="false">
+  <local-check-config name="maven-checkstyle-plugin validate" location="file:/Users/davidradley/flink-http-connector/tools/maven/checkstyle.xml" type="remote" description="maven-checkstyle-plugin configuration validate">
+    <property name="checkstyle.header.file" value="/Users/davidradley/eclipse-http-flink/.metadata/.plugins/org.eclipse.core.resources/.projects/flink-connector-http/com.basistech.m2e.code.quality.checkstyleConfigurator/checkstyle-header-validate.txt"/>
+    <property name="checkstyle.cache.file" value="${project_loc}/target/checkstyle-cachefile"/>
+    <property name="checkstyle.suppressions.file" value="/Users/davidradley/eclipse-http-flink/.metadata/.plugins/org.eclipse.core.resources/.projects/flink-connector-http/com.basistech.m2e.code.quality.checkstyleConfigurator/checkstyle-suppressions-validate.xml"/>
+  </local-check-config>
+  <fileset name="java-sources-validate" enabled="true" check-config-name="maven-checkstyle-plugin validate" local="true">
+    <file-match-pattern match-pattern="^src/main/java/.*\/.*\.java" include-pattern="true"/>
+    <file-match-pattern match-pattern="^src/test/java/.*\/.*\.java" include-pattern="true"/>
+    <file-match-pattern match-pattern="^src/main/resources/.*\.properties" include-pattern="true"/>
+    <file-match-pattern match-pattern="^src/test/resources/.*\.properties" include-pattern="true"/>
+  </fileset>
+</fileset-config>

.github/boring-cyborg.yml

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+################################################################################
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you 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.
+################################################################################
+
+labelPRBasedOnFilePath:
+  component=BuildSystem:
+    - .github/**/*
+    - tools/maven/*
+
+  component=Documentation:
+    - docs/**/*
+
+  component=Connectors/Http:
+    - flink-connector-http*/**/*
+
+###### IssueLink Adder #################################################################################################
+# Insert Issue (Jira/Github etc) link in PR description based on the Issue ID in PR title.
+insertIssueLinkInPrDescription:
+  # specify the placeholder for the issue link that should be present in the description
+  descriptionIssuePlaceholderRegexp: "^Issue link: (.*)$"
+  matchers:
+    # you can have several matches - for different types of issues
+    # only the first matching entry is replaced
+    jiraIssueMatch:
+      # specify the regexp of issue id that you can find in the title of the PR
+      # the match groups can be used to build the issue id (${1}, ${2}, etc.).
+      titleIssueIdRegexp: \[(FLINK-[0-9]+)\]
+      # the issue link to be added. ${1}, ${2} ... are replaced with the match groups from the
+      # title match (remember to use quotes)
+      descriptionIssueLink: "[${1}](https://issues.apache.org/jira/browse/${1}/)"
+    docOnlyIssueMatch:
+      titleIssueIdRegexp: \[hotfix\]
+      descriptionIssueLink: "`Documentation only change, no JIRA issue`"
+
+###### Title Validator #################################################################################################
+# Verifies if commit/PR titles match the regexp specified
+verifyTitles:
+  # Regular expression that should be matched by titles of commits or PR
+  titleRegexp: ^\[FLINK-[0-9]+\].*$|^\[FLINK-XXXXX\].*$|^\[hotfix].*$
+  # If set to true, it will always check the PR title (as opposed to the individual commits).
+  alwaysUsePrTitle: false
+  # If set to true, it will only check the commit in case there is a single commit.
+  # In case of multiple commits it will check PR title.
+  # This reflects the standard behaviour of Github that for `Squash & Merge` GitHub
+  # uses the PR title rather than commit messages for the squashed commit ¯\_(ツ)_/¯
+  # For single-commit PRs it takes the squashed commit message from the commit as expected.
+  #
+  # If set to false it will check all commit messages. This is useful when you do not squash commits at merge.
+  validateEitherPrOrSingleCommitTitle: true
+  # The title the GitHub status should appear from.
+  statusTitle: "Title Validator"
+  # A custom message to be displayed when the title passes validation.
+  successMessage: "Validation successful!"
+  # A custom message to be displayed when the title fails validation.
+  # Allows insertion of ${type} (commit/PR), ${title} (the title validated) and ${regex} (the titleRegexp above).
+  failureMessage: "Wrong ${type} title: ${title}"
+
+# Various Flags to control behaviour of the "Labeler"
+labelerFlags:
+  # If this flag is changed to 'false', labels would only be added when the PR is first created
+  # and not when existing PR is updated.
+  # The default is 'true' which means the labels would be added when PR is updated even if they
+  # were removed by the user
+  labelOnPRUpdates: true
+
+# Comment to be posted to welcome users when they open their first PR
+firstPRWelcomeComment: >
+  Thanks for opening this pull request! Please check out our contributing guidelines. (https://flink.apache.org/contributing/how-to-contribute.html)
+
+# Comment to be posted to congratulate user on their first merged PR
+firstPRMergeComment: >
+  Awesome work, congrats on your first merged pull request!

.github/workflows/push_pr.yml

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+################################################################################
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you 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.
+################################################################################
+
+# We need to specify repo related information here since Apache INFRA doesn't differentiate
+# between several workflows with the same names while preparing a report for GHA usage
+# https://infra-reports.apache.org/#ghactions
+name: Flink Connector HTTP CI
+on: [push, pull_request]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  compile_and_test:
+    strategy:
+      matrix:
+        flink: [ 1.20.0 ]
+        jdk: [ '11', '17', '21' ]
+    uses: apache/flink-connector-shared-utils/.github/workflows/ci.yml@ci_utils
+    with:
+      flink_version: ${{ matrix.flink }}
+      jdk_version: ${{ matrix.jdk }}
+

.github/workflows/weekly.yml

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+################################################################################
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you 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.
+################################################################################
+
+# We need to specify repo related information here since Apache INFRA doesn't differentiate
+# between several workflows with the same names while preparing a report for GHA usage
+# https://infra-reports.apache.org/#ghactions
+name: Weekly Flink Connector HTTP CI
+on:
+  schedule:
+    - cron: "0 0 * * 0"
+  workflow_dispatch:
+jobs:
+  compile_and_test:
+    if: github.repository_owner == 'apache'
+    strategy:
+      matrix:
+        flink_branches: [{
+          flink: 1.20-0,
+          branch: main
+        }]
+    uses: apache/flink-connector-shared-utils/.github/workflows/ci.yml@ci_utils
+    with:
+      flink_version: ${{ matrix.flink_branches.flink }}
+      connector_branch: ${{ matrix.flink_branches.branch }}
+      jdk_version: ${{ matrix.flink_branches.jdk || '11, 17, 21' }}
+      run_dependency_convergence: false