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The [os-indexer-azure README.md](./provider/indexer-azure/README.md) has all the information needed to get started
running the `os-indexer` Azure implementation
+
+## GCP Implementation
+
+All documentation for the GCP implementation of `os-indexer` lives [here](./provider/indexer-gcp/README.md)
+
diff --git a/provider/indexer-gcp/README.md b/provider/indexer-gcp/README.md
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+# Indexer Service
+os-indexer-gcp is a [Spring Boot](https://spring.io/projects/spring-boot) service that is responsible for indexing Records that enable the `os-search` service to execute OSDU R2 domain searches against Elasticsearch.
+
+## Getting Started
+These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.
+
+### Prerequisites
+Pre-requisites
+
+* GCloud SDK with java (latest version)
+* JDK 8
+* Lombok 1.16 or later
+* Maven
+
+### Installation
+In order to run the service locally or remotely, you will need to have the following environment variables defined.
+
+| name | value | description | sensitive? | source |
+| --- | --- | --- | --- | --- |
+| `LOG_PREFIX` | `service` | Logging prefix | no | - |
+| `SERVER_SERVLET_CONTEXPATH` | `/api/indexer/v2` | Servlet context path | no | - |
+| `AUTHORIZE_API` | ex `https://entitlements.com/entitlements/v1` | Entitlements API endpoint | no | output of infrastructure deployment |
+| `ENTITLEMENTS_HOST` | ex `https://entitlements.com/entitlements/v1` | Entitlements API endpoint | no | output of infrastructure deployment |
+| `LEGALTAG_API` | ex `https://legal.com/api/legal/v1` | Legal API endpoint | no | output of infrastructure deployment |
+| `INDEXER_HOST` | ex `os-indexer-dot-opendes.appspot.com` | Indexer Host | no | output of infrastructure deployment |
+| `INDEXER_QUEUE_HOST` | ex `https://os-indexer-queue-dot-opendes.appspot.com/_dps/task-handlers/enqueue` | Indexer-Queue API endpoint | no | output of infrastructure deployment |
+| `CRS_API` | ex `https://crs-converter-gae-dot-opendes.appspot.com/api/crs/v1` | CRS API endpoint | no | https://console.cloud.google.com/memorystore/redis/instances |
+| `STORAGE_HOSTNAME` | ex `os-storage-dot-opendes.appspot.com` | Storage Host | no | output of infrastructure deployment |
+| `STORAGE_SCHEMA_HOST` | ex `https://os-storage-dot-opendes.appspot.com/api/storage/v2/schemas` | Storage API endpoint 'schemas' | no | https://console.cloud.google.com/apis/credentials |
+| `STORAGE_QUERY_RECORD_FOR_CONVERSION_HOST` | ex `https://os-storage-dot-opendes.appspot.com/api/storage/v2/query/records:batch` | Storage API endpoint 'records' | no | https://console.cloud.google.com/iam-admin/serviceaccounts |
+| `REDIS_SEARCH_HOST` | ex `127.0.0.1` | Redis host for search | no | https://console.cloud.google.com/memorystore/redis/instances |
+| `REDIS_GROUP_HOST` | ex `127.0.0.1` | Redis host for groups | no | https://console.cloud.google.com/memorystore/redis/instances |
+| `REDIS_SEARCH_PORT` | ex `6379` | Redis host for search | no | https://console.cloud.google.com/memorystore/redis/instances |
+| `GOOGLE_CLOUD_PROJECT` | ex `opendes` | Google Cloud Project Id| no | output of infrastructure deployment |
+| `GOOGLE_AUDIENCES` | ex `*****.apps.googleusercontent.com` | Client ID for getting access to cloud resources | yes | https://console.cloud.google.com/apis/credentials |
+| `GOOGLE_APPLICATION_CREDENTIALS` | ex `/path/to/directory/service-key.json` | Service account credentials, you only need this if running locally | yes | https://console.cloud.google.com/iam-admin/serviceaccounts |
+
+### Run Locally
+Check that maven is installed:
+
+```bash
+$ mvn --version
+Apache Maven 3.6.0
+Maven home: /usr/share/maven
+Java version: 1.8.0_212, vendor: AdoptOpenJDK, runtime: /usr/lib/jvm/jdk8u212-b04/jre
+...
+```
+
+You may need to configure access to the remote maven repository that holds the OSDU dependencies. This file should live within `~/.mvn/community-maven.settings.xml`:
+
+```bash
+$ cat ~/.m2/settings.xml
+<?xml version="1.0" encoding="UTF-8"?>
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
+ <servers>
+ <server>
+ <id>community-maven-via-private-token</id>
+ <!-- Treat this auth token like a password. Do not share it with anyone, including Microsoft support. -->
+ <!-- The generated token expires on or before 11/14/2019 -->
+ <configuration>
+ <httpHeaders>
+ <property>
+ <name>Private-Token</name>
+ <value>${env.COMMUNITY_MAVEN_TOKEN}</value>
+ </property>
+ </httpHeaders>
+ </configuration>
+ </server>
+ </servers>
+</settings>
+```
+
+* Update the Google cloud SDK to the latest version:
+
+```bash
+gcloud components update
+```
+* Set Google Project Id:
+
+```bash
+gcloud config set project <YOUR-PROJECT-ID>
+```
+
+* Perform a basic authentication in the selected project:
+
+```bash
+gcloud auth application-default login
+```
+
+* Navigate to indexer service's root folder and run:
+
+```bash
+mvn jetty:run
+## Testing
+* Navigate to indexer service's root folder and run:
+
+```bash
+mvn clean install
+```
+
+* If you wish to see the coverage report then go to testing/target/site/jacoco-aggregate and open index.html
+
+* If you wish to build the project without running tests
+
+```bash
+mvn clean install -DskipTests
+```
+
+After configuring your environment as specified above, you can follow these steps to build and run the application. These steps should be invoked from the *repository root.*
+
+```bash
+cd provider/indexer-gcp/ && mvn spring-boot:run
+```
+
+## Testing
+Navigate to indexer service's root folder and run all the tests:
+
+```bash
+# build + install integration test core
+$ (cd testing/indexer-test-core/ && mvn clean install)
+```
+
+### Running E2E Tests
+This section describes how to run cloud OSDU E2E tests (testing/integration-tests/indexer-test-gcp).
+
+You will need to have the following environment variables defined.
+
+| name | value | description | sensitive? | source |
+| --- | --- | --- | --- | --- |
+| `ENTITLEMENTS_HOST` | ex `https://entitlements.com/entitlements/v1` | Entitlements API endpoint | no | output of infrastructure deployment |
+| `ELASTIC_PASSWORD` | `********` | Password for Elasticsearch | yes | output of infrastructure deployment |
+| `ELASTIC_USER_NAME` | `********` | User name for Elasticsearch | yes | output of infrastructure deployment |
+| `ELASTIC_HOST` | ex `elastic.domain.com` | Host Elasticsearch | yes | output of infrastructure deployment |
+| `ELASTIC_PORT` | ex `9243` | Port Elasticsearch | yes | output of infrastructure deployment |
+| `GCLOUD_PROJECT` | ex `opendes` | Google Cloud Project Id| no | output of infrastructure deployment |
+| `INDEXER_HOST` | ex `https://os-indexer-dot-opendes.appspot.com/api/indexer/v2/` | Indexer API endpoint | no | output of infrastructure deployment |
+| `DATA_GROUP` | `opendes` | The service account to this group and substitute | no | - |
+| `ENTITLEMENTS_DOMAIN` | ex `opendes-gcp.projects.com` | OSDU R2 to run tests under | no | - |
+| `INTEGRATION_TEST_AUDIENCE` | `********` | client application ID | yes | https://console.cloud.google.com/apis/credentials |
+| `OTHER_RELEVANT_DATA_COUNTRIES` | ex `US` | valid legal tag with a other relevant data countries | no | - |
+| `LEGAL_TAG` | ex `opendes-demo-legaltag` | valid legal tag with a other relevant data countries from `DEFAULT_OTHER_RELEVANT_DATA_COUNTRIES` | no | - |
+| `DEFAULT_DATA_PARTITION_ID_TENANT1` | ex `opendes` | HTTP Header 'Data-Partition-ID' | no | - |
+| `SEARCH_INTEGRATION_TESTER` | `********` | Service account for API calls. Note: this user must have entitlements configured already | yes | https://console.cloud.google.com/iam-admin/serviceaccounts |
+| `SEARCH_HOST` | ex `http://localhost:8080/api/search/v2/` | Endpoint of search service | no | - |
+| `STORAGE_HOST` | ex `os-storage-dot-opendes.appspot.com` | Storage Host | no | output of infrastructure deployment |
+
+**Entitlements configuration for integration accounts**
+
+| INTEGRATION_TESTER | NO_DATA_ACCESS_TESTER |
+| --- | --- |
+| users<br/>service.entitlements.user<br/>service.search.user<br/>data.test1<br/>data.integration.test<br/>users@{tenant1}@{domain}.com |
+
+Execute following command to build code and run all the integration tests:
+
+```bash
+# Note: this assumes that the environment variables for integration tests as outlined
+# above are already exported in your environment.
+$ (cd testing/indexer-test-gcp/ && mvn clean test)
+```
+
+## Deployment
+
+* Data-Lake Indexer Google Cloud Endpoints on App Engine Flex environment
+ * Edit the app.yaml
+ * Open the [app.yaml](indexer/src/main/appengine/app.yaml) file in editor, and replace the YOUR-PROJECT-ID `GOOGLE_CLOUD_PROJECT` line with Google Cloud Platform project Id. Also update `AUTHORIZE_API`, `CRON_JOB_IP`, `LEGAL_HOSTNAME`, `REGION` and `SECURITY_HTTPS_CERTIFICATE_TRUST` based on your deployment
+
+ * Deploy
+ ```sh
+ mvn appengine:deploy -pl org.opengroup.osdu.indexer:indexer -amd
+ ```
+
+ * If you wish to deploy the search service without running tests
+ ```sh
+ mvn appengine:deploy -pl org.opengroup.osdu.indexer:indexer -amd -DskipTests
+ ```
+
+or
+* Google Documentation: https://cloud.google.com/cloud-build/docs/deploying-builds/deploy-appengine
+
+#### Cloud KMS Setup
+
+Enable cloud KMS on master project
+
+Create king ring and key in the ***master project***
+
+```bash
+ gcloud services enable cloudkms.googleapis.com
+ export KEYRING_NAME="csqp"
+ export CRYPTOKEY_NAME="searchService"
+ gcloud kms keyrings create $KEYRING_NAME --location global
+ gcloud kms keys create $CRYPTOKEY_NAME --location global \
+ --keyring $KEYRING_NAME \
+ --purpose encryption
+```
+
+Add **Cloud KMS CryptoKey Encrypter/Decrypter** role to the **App Engine default service account** of the master project through IAM - Role tab
+
+Add "Cloud KMS Encrypt/Decrypt" role to the "App Engine default service account" of ***master project***
+
+#### Memory Store (Redis Instance) Setup
+
+Create a new Standard tier Redis instance on the ***service project***
+
+The Redis instance must be created under the same region with the App Engine application which needs to access it.
+
+```bash
+ gcloud beta redis instances create redis-cache-search --size=10 --region=<service-deployment-region> --zone=<service-deployment-zone> --tier=STANDARD
+```
+
+## Licence
+Copyright © Google LLC
+Copyright © EPAM Systems
+
+Licensed 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](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.
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