🎉 New source: Fauna (#15274)

* Add fauna source

* Update changelog to include the correct PR

* Improve docs (#1)

* Applied suggestions to improve docs (#2)

* Applied suggestions to improve docs

* Cleaned up the docs

* Apply suggestions from code review

Co-authored-by: Ewan Edwards <46354154+faunaee@users.noreply.github.com>

* Update airbyte-integrations/connectors/source-fauna/source_fauna/spec.yaml

Co-authored-by: Ewan Edwards <46354154+faunaee@users.noreply.github.com>

Co-authored-by: Ewan Edwards <46354154+faunaee@users.noreply.github.com>

* Flake Checker (#3)

* Run ./gradlew :airbyte-integrations:connectors:source-fauna:flakeCheck

* Fix all the warnings

* Set additionalProperties to true to adhere to acceptance tests

* Remove custom fields (#4)

* Remove custom fields from source.py

* Remove custom fields from spec.yaml

* Collections that support incremental sync are found correctly

* Run formatter

* Index values and termins are verified

* Stripped additional_columns from collection config and check()

* We now search for an index at the start of each sync

* Add default for missing data in collection

* Add a log message about the index chosen to sync an incremental stream

* Add an example for a configured incremental catalog

* Check test now validates the simplified check function

* Remove collection name from spec.yaml and CollectionConfig

* Update test_util.py to ahere to the new config

* Update the first discover test to validate that we can find indexes correctly

* Remove other discover tests, as they no longer apply

* Full refresh test now works with simplified expanded columns

* Remove unused imports

* Incremental test now adheres to the find_index_for_stream system

* Database test passes, so now all unit tests pass again

* Remove extra fields from required section

* ttl is nullable

* Data defaults to an empty object

* Update tests to reflect ttl and data select changes

* Fix expected records. All unit tests and acceptance tests pass

* Cleanup docs for find_index_for_stream

* Update setup guide to reflect multiple collections

* Add docs to install the fauna shell

* Update examples and README to conform to the removal of additional columns

Co-authored-by: Ewan Edwards <46354154+faunaee@users.noreply.github.com>

airbyte-integrations/builds.md

@@ -33,6 +33,7 @@
 | End-to-End Testing   | [![source-e2e-test](https://img.shields.io/endpoint?url=https%3A%2F%2Fdnsgjos7lj2fu.cloudfront.net%2Ftests%2Fsummary%2Fsource-e2e-test%2Fbadge.json)](https://dnsgjos7lj2fu.cloudfront.net/tests/summary/source-e2e-test) |
 | Exchange Rates API   | [![source-exchange-rates](https://img.shields.io/endpoint?url=https%3A%2F%2Fdnsgjos7lj2fu.cloudfront.net%2Ftests%2Fsummary%2Fsource-exchange-rates%2Fbadge.json)](https://dnsgjos7lj2fu.cloudfront.net/tests/summary/source-exchange-rates) |
 | Facebook Marketing   | [![source-facebook-marketing](https://img.shields.io/endpoint?url=https%3A%2F%2Fdnsgjos7lj2fu.cloudfront.net%2Ftests%2Fsummary%2Fsource-facebook-marketing%2Fbadge.json)](https://dnsgjos7lj2fu.cloudfront.net/tests/summary/source-facebook-marketing) |
+| Fauna   | [![source-fauna](https://img.shields.io/endpoint?url=https%3A%2F%2Fdnsgjos7lj2fu.cloudfront.net%2Ftests%2Fsummary%2Fsource-fauna%2Fbadge.json)](https://dnsgjos7lj2fu.cloudfront.net/tests/summary/source-fauna) |
 | Files   | [![source-file](https://img.shields.io/endpoint?url=https%3A%2F%2Fdnsgjos7lj2fu.cloudfront.net%2Ftests%2Fsummary%2Fsource-file%2Fbadge.json)](https://dnsgjos7lj2fu.cloudfront.net/tests/summary/source-file) |
 | Flexport   | [![source-file](https://img.shields.io/endpoint?url=https%3A%2F%2Fdnsgjos7lj2fu.cloudfront.net%2Ftests%2Fsummary%2Fsource-flexport%2Fbadge.json)](https://dnsgjos7lj2fu.cloudfront.net/tests/summary/source-flexport) |
 | Freshdesk   | [![source-freshdesk](https://img.shields.io/endpoint?url=https%3A%2F%2Fdnsgjos7lj2fu.cloudfront.net%2Ftests%2Fsummary%2Fsource-freshdesk%2Fbadge.json)](https://dnsgjos7lj2fu.cloudfront.net/tests/summary/source-freshdesk) |

airbyte-integrations/connectors/source-fauna/.dockerignore

@@ -0,0 +1,6 @@
+*
+!Dockerfile
+!main.py
+!source_fauna
+!setup.py
+!secrets

airbyte-integrations/connectors/source-fauna/.gitignore

@@ -0,0 +1,6 @@
+# Python version tools
+.tool-versions
+../../../.tool-versions
+# emacs auto-save files
+*~
+*#

airbyte-integrations/connectors/source-fauna/Dockerfile

@@ -0,0 +1,38 @@
+FROM python:3.9.11-alpine3.15 as base
+
+# build and load all requirements
+FROM base as builder
+WORKDIR /airbyte/integration_code
+
+# upgrade pip to the latest version
+RUN apk --no-cache upgrade \
+    && pip install --upgrade pip \
+    && apk --no-cache add tzdata build-base
+
+
+COPY setup.py ./
+# install necessary packages to a temporary folder
+RUN pip install --prefix=/install .
+
+# build a clean environment
+FROM base
+WORKDIR /airbyte/integration_code
+
+# copy all loaded and built libraries to a pure basic image
+COPY --from=builder /install /usr/local
+# add default timezone settings
+COPY --from=builder /usr/share/zoneinfo/Etc/UTC /etc/localtime
+RUN echo "Etc/UTC" > /etc/timezone
+
+# bash is installed for more convenient debugging.
+RUN apk --no-cache add bash
+
+# copy payload code only
+COPY main.py ./
+COPY source_fauna ./source_fauna
+
+ENV AIRBYTE_ENTRYPOINT "python /airbyte/integration_code/main.py"
+ENTRYPOINT ["python", "/airbyte/integration_code/main.py"]
+
+LABEL io.airbyte.version=dev
+LABEL io.airbyte.name=airbyte/source-fauna

airbyte-integrations/connectors/source-fauna/README.md

@@ -0,0 +1,188 @@
+# New Readers
+
+If you know how Airbyte works, read [bootstrap.md](bootstrap.md) for a quick introduction to this source. If you haven't
+used airbyte before, read [overview.md](overview.md) for a longer overview about what this connector is and how to use
+it.
+
+# For Fauna Developers
+
+## Running locally
+
+First, start a local fauna container:
+```
+docker run --rm --name faunadb -p 8443:8443 fauna/faunadb
+```
+
+In another terminal, cd into the connector directory:
+```
+cd airbyte-integrations/connectors/source-fauna
+```
+
+Once started the container is up, setup the database:
+```
+fauna eval "$(cat examples/setup_database.fql)" --domain localhost --port 8443 --scheme http --secret secret
+```
+
+Finally, run the connector:
+```
+python main.py spec
+python main.py check --config examples/config_localhost.json
+python main.py discover --config examples/config_localhost.json
+python main.py read --config examples/config_localhost.json --catalog examples/configured_catalog.json
+```
+
+To pick up a partial failure you need to pass in a state file. To test via example induce a crash via bad data (e.g. a missing required field), update `examples/sample_state_full_sync.json` to contain your emitted state and then run:
+
+```
+python main.py read --config examples/config_localhost.json --catalog examples/configured_catalog.json --state examples/sample_state_full_sync.json
+```
+
+## Running the intergration tests
+
+First, cd into the connector directory:
+```
+cd airbyte-integrations/connectors/source-fauna
+```
+
+The integration tests require a secret config.json. Ping me on slack to get this file.
+Once you have this file, put it in `secrets/config.json`. A sample of this file can be
+found at `examples/secret_config.json`. Once the file is created, build the connector:
+```
+docker build . -t airbyte/source-fauna:dev
+```
+
+Now, run the integration tests:
+```
+python -m pytest -p integration_tests.acceptance
+```
+
+
+# Fauna Source
+
+This is the repository for the Fauna source connector, written in Python.
+For information about how to use this connector within Airbyte, see [the documentation](https://docs.airbyte.io/integrations/sources/fauna).
+
+## Local development
+
+### Prerequisites
+**To iterate on this connector, make sure to complete this prerequisites section.**
+
+#### Minimum Python version required `= 3.9.0`
+
+#### Build & Activate Virtual Environment and install dependencies
+From this connector directory, create a virtual environment:
+```
+python -m venv .venv
+```
+
+This will generate a virtualenv for this module in `.venv/`. Make sure this venv is active in your
+development environment of choice. To activate it from the terminal, run:
+```
+source .venv/bin/activate
+pip install -r requirements.txt
+```
+If you are in an IDE, follow your IDE's instructions to activate the virtualenv.
+
+Note that while we are installing dependencies from `requirements.txt`, you should only edit `setup.py` for your dependencies. `requirements.txt` is
+used for editable installs (`pip install -e`) to pull in Python dependencies from the monorepo and will call `setup.py`.
+If this is mumbo jumbo to you, don't worry about it, just put your deps in `setup.py` but install using `pip install -r requirements.txt` and everything
+should work as you expect.
+
+#### Building via Gradle
+From the Airbyte repository root, run:
+```
+./gradlew :airbyte-integrations:connectors:source-fauna:build
+```
+
+#### Create credentials
+**If you are a community contributor**, follow the instructions in the [documentation](https://docs.airbyte.io/integrations/sources/fauna)
+to generate the necessary credentials. Then create a file `secrets/config.json` conforming to the `source_fauna/spec.yaml` file.
+Note that the `secrets` directory is gitignored by default, so there is no danger of accidentally checking in sensitive information.
+See `examples/secret_config.json` for a sample config file.
+
+**If you are an Airbyte core member**, copy the credentials in Lastpass under the secret name `source fauna test creds`
+and place them into `secrets/config.json`.
+
+### Locally running the connector
+```
+python main.py spec
+python main.py check --config secrets/config.json
+python main.py discover --config secrets/config.json
+python main.py read --config secrets/config.json --catalog integration_tests/configured_catalog.json
+```
+
+### Locally running the connector docker image
+
+#### Build
+First, make sure you build the latest Docker image:
+```
+docker build . -t airbyte/source-fauna:dev
+```
+
+You can also build the connector image via Gradle:
+```
+./gradlew :airbyte-integrations:connectors:source-fauna:airbyteDocker
+```
+When building via Gradle, the docker image name and tag, respectively, are the values of the `io.airbyte.name` and `io.airbyte.version` `LABEL`s in
+the Dockerfile.
+
+#### Run
+Then run any of the connector commands as follows:
+```
+docker run --rm airbyte/source-fauna:dev spec
+docker run --rm -v $(pwd)/secrets:/secrets airbyte/source-fauna:dev check --config /secrets/config.json
+docker run --rm -v $(pwd)/secrets:/secrets airbyte/source-fauna:dev discover --config /secrets/config.json
+docker run --rm -v $(pwd)/secrets:/secrets -v $(pwd)/integration_tests:/integration_tests airbyte/source-fauna:dev read --config /secrets/config.json --catalog /integration_tests/configured_catalog.json
+```
+## Testing
+   Make sure to familiarize yourself with [pytest test discovery](https://docs.pytest.org/en/latest/goodpractices.html#test-discovery) to know how your test files and methods should be named.
+First install test dependencies into your virtual environment:
+```
+pip install .[tests]
+```
+### Unit Tests
+To run unit tests locally, from the connector directory run:
+```
+python -m pytest unit_tests
+```
+
+### Integration Tests
+There are two types of integration tests: Acceptance Tests (Airbyte's test suite for all source connectors) and custom integration tests (which are specific to this connector).
+#### Custom Integration tests
+Place custom tests inside `integration_tests/` folder, then, from the connector root, run
+```
+python -m pytest integration_tests
+```
+#### Acceptance Tests
+Customize `acceptance-test-config.yml` file to configure tests. See [Source Acceptance Tests](https://docs.airbyte.io/connector-development/testing-connectors/source-acceptance-tests-reference) for more information.
+If your connector requires to create or destroy resources for use during acceptance tests create fixtures for it and place them inside integration_tests/acceptance.py.
+To run your integration tests with acceptance tests, from the connector root, run
+```
+python -m pytest integration_tests -p integration_tests.acceptance
+```
+To run your integration tests with docker
+
+### Using gradle to run tests
+All commands should be run from airbyte project root.
+To run unit tests:
+```
+./gradlew :airbyte-integrations:connectors:source-fauna:unitTest
+```
+To run acceptance and custom integration tests:
+```
+./gradlew :airbyte-integrations:connectors:source-fauna:integrationTest
+```
+
+## Dependency Management
+All of your dependencies should go in `setup.py`, NOT `requirements.txt`. The requirements file is only used to connect internal Airbyte dependencies in the monorepo for local development.
+We split dependencies between two groups, dependencies that are:
+* required for your connector to work need to go to `MAIN_REQUIREMENTS` list.
+* required for the testing need to go to `TEST_REQUIREMENTS` list
+
+### Publishing a new version of the connector
+You've checked out the repo, implemented a million dollar feature, and you're ready to share your changes with the world. Now what?
+1. Make sure your changes are passing unit and integration tests.
+1. Bump the connector version in `Dockerfile` -- just increment the value of the `LABEL io.airbyte.version` appropriately (we use [SemVer](https://semver.org/)).
+1. Create a Pull Request.
+1. Pat yourself on the back for being an awesome contributor.
+1. Someone from Airbyte will take a look at your PR and iterate with you to merge it into master.

airbyte-integrations/connectors/source-fauna/acceptance-test-config.yml

@@ -0,0 +1,45 @@
+# See [Source Acceptance Tests](https://docs.airbyte.io/connector-development/testing-connectors/source-acceptance-tests-reference)
+# for more information about how to configure these tests
+connector_image: airbyte/source-fauna:dev
+tests:
+  spec:
+    - spec_path: "source_fauna/spec.yaml"
+  connection:
+    - config_path: "secrets/config.json"
+      status: "succeed"
+    - config_path: "secrets/config-deletions.json"
+      status: "succeed"
+    - config_path: "integration_tests/config/invalid.json"
+      status: "failed"
+  discovery:
+    - config_path: "secrets/config.json"
+    - config_path: "secrets/config-deletions.json"
+  basic_read:
+    - config_path: "secrets/config.json"
+      configured_catalog_path: "integration_tests/configured_catalog.json"
+      empty_streams: []
+      expect_records:
+        path: "integration_tests/expected_records.txt"
+        extra_fields: no
+        exact_order: yes
+        extra_records: no
+    - config_path: "secrets/config-deletions.json"
+      configured_catalog_path: "integration_tests/configured_catalog_incremental.json"
+      empty_streams: []
+      expect_records:
+        path: "integration_tests/expected_deletions_records.txt"
+        extra_fields: no
+        exact_order: yes
+        extra_records: no
+  incremental:
+    - config_path: "secrets/config.json"
+      configured_catalog_path: "integration_tests/configured_catalog.json"
+      # Note that the time in this file was generated with this fql:
+      # ToMicros(ToTime(Date("9999-01-01")))
+      future_state_path: "integration_tests/abnormal_state.json"
+    - config_path: "secrets/config-deletions.json"
+      configured_catalog_path: "integration_tests/configured_catalog_incremental.json"
+      future_state_path: "integration_tests/abnormal_deletions_state.json"
+  full_refresh:
+    - config_path: "secrets/config.json"
+      configured_catalog_path: "integration_tests/configured_catalog.json"

airbyte-integrations/connectors/source-fauna/acceptance-test-docker.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env sh
+
+# Build latest connector image
+docker build . -t $(cat acceptance-test-config.yml | grep "connector_image" | head -n 1 | cut -d: -f2-)
+
+# Pull latest acctest image
+docker pull airbyte/source-acceptance-test:latest
+
+# Run
+docker run --rm -it \
+    -v /var/run/docker.sock:/var/run/docker.sock \
+    -v /tmp:/tmp \
+    -v $(pwd):/test_input \
+    airbyte/source-acceptance-test \
+    --acceptance-test-config /test_input
+

airbyte-integrations/connectors/source-fauna/bootstrap.md

@@ -0,0 +1,56 @@
+# Fauna Source
+
+[Fauna](https://fauna.com/) is a serverless "document-relational" database that user's interact with via APIs. This connector delivers Fauna as an airbyte source.
+
+This source is implemented in the [Airbyte CDK](https://docs.airbyte.io/connector-development/cdk-python).
+It also uses the [Fauna Python Driver](https://docs.fauna.com/fauna/current/drivers/python), which
+allows the connector to build FQL queries in python. This driver is what queries the Fauna database.
+
+Fauna has collections (similar to tables) and documents (similar to rows).
+
+Every document has at least 3 fields: `ref`, `ts` and `data`. The `ref` is a unique string identifier
+for every document. The `ts` is a timestamp, which is the time that the document was last modified.
+The `data` is arbitrary json data. Because there is no shape to this data, we also allow users of
+airbyte to specify which fields of the document they want to export as top-level columns.
+
+Users can also choose to export the `data` field itself in the raw and in the case of incremental syncs, metadata regarding when a document was deleted.
+
+We currently only provide a single stream, which is the collection the user has chosen. This is
+because to support incremental syncs we need an index with every collection, so it ends up being easier to just have the user
+setup the index and tell us the collection and index name they wish to use.
+
+## Full sync
+
+This source will simply call the following [FQL](https://docs.fauna.com/fauna/current/api/fql/): `Paginate(Documents(Collection("collection-name")))`.
+This queries all documents in the database in a paginated manner. The source then iterates over all the results from that query to export data from the connector.
+
+Docs:
+[Paginate](https://docs.fauna.com/fauna/current/api/fql/functions/paginate?lang=python).
+[Documents](https://docs.fauna.com/fauna/current/api/fql/functions/documents?lang=python).
+[Collection](https://docs.fauna.com/fauna/current/api/fql/functions/collection?lang=python).
+
+## Incremental sync
+
+### Updates (uses an index over ts)
+
+The source will call FQL similar to this: `Paginate(Range(Match(Index("index-name")), <last-sync-ts>, []))`.
+The index we match against has the values `ts` and `ref`, so it will sort by the time since the document
+has been modified. The Range() will limit the query to just pull the documents that have been modified
+since the last query.
+
+Docs:
+[Range](https://docs.fauna.com/fauna/current/api/fql/functions/range?lang=python).
+[Match](https://docs.fauna.com/fauna/current/api/fql/functions/match?lang=python).
+[Index](https://docs.fauna.com/fauna/current/api/fql/functions/iindex?lang=python).
+
+### Deletes (uses the events API)
+
+If the users wants deletes, we have a seperate query for that:
+`Paginate(Events(Documents(Collection("collection-name"))))`. This will paginate over all the events
+in the documents of the collection. We also filter this to only give us the events since the recently
+modified documents. Using these events, we can produce a record with the "deleted at" field set, so
+that users know the document has been deleted.
+
+Docs:
+[Events](https://docs.fauna.com/fauna/current/api/fql/functions/events?lang=python).
+

airbyte-integrations/connectors/source-fauna/build.gradle

@@ -0,0 +1,9 @@
+plugins {
+    id 'airbyte-python'
+    id 'airbyte-docker'
+    id 'airbyte-source-acceptance-test'
+}
+
+airbytePython {
+    moduleDirectory 'source_fauna_singer'
+}