… to Google Pub/Sub (apache#13112)

* add initial template and dependencies

* Added flex template creation with metadata support and instructions

* added new gradle modules for templates

* moved metadata to template location, reverted examples build.gradle

* Moved KafkaToPubsub to template, implemented options in separate package

* Added package-info.java to new packages

* Reverted build.gradle to master branch state

* fixed JAVADOC and metadata

* Added the Read Me section with a step-by-step guide

* Update README.md

* Readme fixes regarding comments

* Update README.md

* Update README.md

* Fixed typos in README.md

* refactored README.md added case to run template locally

* Update README.md

* fix build script for dataflow in README.md

* Added unit test and fixed metadata file

* Added Licenses and style fixes

* Added support for retrieving Kafka credentials from HashiCorp Vault secret storage with url and token

* Updated README.md and metadata with parameters for Vault access; refactored Kafka configuration

* Style fix

* Added description for Vault parameters in metadata

* FIX trailing whitespaces in README.md

* FIX. Blank line contains whitespace README.md

* Update README.md

* Refactored to examples folder

* Added conversion from JSON into PubsubMessage and extracted all transformations from the pipeline class into the separate class

* Whitespacelint fix

* Updated README.md and output formats

* Update README.md

* Update README.md

* Added support for SSL and removed outputFormat option

* Added avro usage example

* Added ssl to AVRO reader

* FIX whitespaces.

* added readme/docs regarding of Avro

* README.md and javadoc fixes

* Added Vault's response JSON schema description

* Style fix

* Refactoring.

* Fixed ssl parameters

* Fixed style

* optimize build.gradle

* Resolve conversations

* Updated regarding comments and added unit tests

* README.md update

* made Avro class more abstract

* fix style

* fixed review conversation items

* fix getting ssl credentials from Vault

* FIX add empty && null map validation to sslConfig

* FIX. remove vault ssl certs parameters

* metadata fix

* Local paths fix for SSL from GCS

* add new log message to avoid wrong local files usage

* fix style

* Moved kafka-to-pubsub to examples/ directory and updated README.md (#6)

* Stylefix

* Removed unused file

* add tbd section for e-2-e tests

* fix styles

* specifying kafka-clients version

* fix readme

* template -> exmples

* Update examples/kafka-to-pubsub/README.md

Co-authored-by: Brian Hulette <hulettbh@gmail.com>

* Fixed outdated import

* Moved template to examples/complete

* Updated paths in readme file

* Updated README.md and javadoc regarding comments

* README.md stylefix

* Added link to KafkaToPubsub example into complete/README.md

* Stylefix

Co-authored-by: Artur Khanin <artur.khanin@kzn.akvelon.com>
Co-authored-by: Artur Khanin <artur.khanin@akvelon.com>
Co-authored-by: AKosolapov <AKosolapov@users.noreply.github.com>
Co-authored-by: ramazan-yapparov <75415515+ramazan-yapparov@users.noreply.github.com>
Co-authored-by: Ramazan Yapparov <ramazan.yapparov@akvelon.com>
Co-authored-by: Brian Hulette <hulettbh@gmail.com>

…at streams data from twitter

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reorganizing pipeline

delete the unused folder

Revert "Delete build.gradle"

This reverts commit c39a4e44

Delete build.gradle

don't need this file

adding comments and java docs, and removing unneeded dependencies.

Linting the project and making some stuff private

Reorganized and redefined to logic as per standard beam IO structure.

Lint the files.

Added changes for making the implementation more streamlined and understandable

Added a connector that streams data from twitter using a Standard Twitter app.

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Added a connector that streams data from twitter using a Standard Twitter app.

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delete the unused folder

Revert "Delete build.gradle"

This reverts commit c39a4e44

Delete build.gradle

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adding comments and java docs, and removing unneeded dependencies.

Linting the project and making some stuff private

Reorganized and redefined to logic as per standard beam IO structure.

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Added changes for making the implementation more streamlined and understandable

Added a connector that streams data from twitter using a Standard Twitter app.

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delete the unused folder

Revert "Delete build.gradle"

This reverts commit c39a4e44

Delete build.gradle

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adding comments and java docs, and removing unneeded dependencies.

Linting the project and making some stuff private

Reorganized and redefined to logic as per standard beam IO structure.

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Added changes for making the implementation more streamlined and understandable

Added a connector that streams data from twitter using a Standard Twitter app.

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make tests typescript