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https://github.com/mat3e/trino-demo

JDBC communication with Trino consuming MySQL, Mongo & Google Sheets
https://github.com/mat3e/trino-demo

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JDBC communication with Trino consuming MySQL, Mongo & Google Sheets

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README

          

[Trino](https://trino.io/) is a distributed SQL engine, which reads (and writes) data directly from their sources. [My tech talk](https://github.com/mat3e/talks/tree/master/docs/sql).

# Trino demo
This project uses Quarkus and JDBC to connect with Trino.

## 1. MySQL database:
```
docker run -d -p 3306:3306 -e MYSQL_ROOT_PASSWORD=secret mysql:5
```
```sql
create schema todos;

create table task_groups
(
id int auto_increment primary key,
description varchar(100) not null,
done bit null
);

create table tasks
(
id int auto_increment primary key,
description varchar(100) not null,
done bit null,
deadline datetime null,
created_on datetime null,
updated_on datetime null,
task_group_id int null,
assigned_user int null,
constraint tasks_ibfk_1 foreign key (task_group_id) references task_groups (id)
);

INSERT INTO task_groups (id, description, done) VALUES (1, 'Job tasks', false);

INSERT INTO tasks (id, description, done, deadline, created_on, updated_on, task_group_id, assigned_user) VALUES (1, 'Learn Java migrations', true, null, null, null, null, 1);
INSERT INTO tasks (id, description, done, deadline, created_on, updated_on, task_group_id, assigned_user) VALUES (2, 'Start job', false, null, '2021-03-18 16:42:00', null, 1, 3);
INSERT INTO tasks (id, description, done, deadline, created_on, updated_on, task_group_id, assigned_user) VALUES (3, 'Question everything', true, null, '2021-03-18 16:42:00', null, 1, 2);
INSERT INTO tasks (id, description, done, deadline, created_on, updated_on, task_group_id, assigned_user) VALUES (4, 'End job', false, null, '2021-03-18 16:42:00', null, 1, 2);
INSERT INTO tasks (id, description, done, deadline, created_on, updated_on, task_group_id, assigned_user) VALUES (5, 'Test that', false, null, '2021-03-18 16:42:00', null, null, 1);
```

## 2. Mongo:
```
docker run -d -p 27017:27017 -e MONGO_INITDB_ROOT_USERNAME=root -e MONGO_INITDB_ROOT_PASSWORD=secret mongo
```
```javascript
use userdb

db.users.insertOne({id: 1, login: 'admin', mail: 'admin@ad.min', roles: ['ADMIN']})
db.users.insertOne({id: 2, login: 'user', mail: 'user@ad.min', roles: ['USER']})
db.users.insertOne({id: 3, login: 'test', mail: 'test@ad.min', roles: ['USER', 'MODERATOR']})
```

## 3. Google Sheets:
* Metadata (`tables` sheet):

Table Name|sheetid#sheetname|Owner|Notes
---|---|---|---
metadata_table|sheet_id#tables| |Self reference to this sheet as table
users|sheet_id#users| |Next sheet here
* Users (`users` sheet):

Number|Name|Surname
---|---|---
1|Anna|Nowak
2|Jan|Kowalski
* [Enable Google Sheets API](https://console.developers.google.com/apis/library/sheets.googleapis.com)
* Create Credentials (Service Account)
* Create a new JSON key for account
* Share your sheet(s) with account's e-mail

## 4. Trino:
* Download & unpack [trino-server-353.tar.gz](https://repo1.maven.org/maven2/io/trino/trino-server/353/trino-server-353.tar.gz)
* Create `etc` directory inside the installation directory and `catalog` subdirectory in `etc`
* `etc/node.properties`
```
node.environment=common_for_all_the_nodes
node.id=consistent_but_unique_node1
node.data-dir=/path/to/store/logs/data
```
* `etc/jvm.config`
```
-server
-Xmx16G
-XX:-UseBiasedLocking
-XX:+UseG1GC
-XX:G1HeapRegionSize=32M
-XX:+ExplicitGCInvokesConcurrent
-XX:+ExitOnOutOfMemoryError
-XX:+HeapDumpOnOutOfMemoryError
-XX:ReservedCodeCacheSize=512M
-XX:PerMethodRecompilationCutoff=10000
-XX:PerBytecodeRecompilationCutoff=10000
-Djdk.attach.allowAttachSelf=true
-Djdk.nio.maxCachedBufferSize=2000000
```
* `etc/config.properties`
```
coordinator=true
node-scheduler.include-coordinator=true
http-server.http.port=9090
query.max-memory=5GB
query.max-memory-per-node=1GB
query.max-total-memory-per-node=2GB
discovery-server.enabled=true
discovery.uri=http://localhost:9090
```
* `etc/catalog/mysql.properties`
```
connector.name=mysql
connection-url=jdbc:mysql://localhost:3306
connection-user=root
connection-password=secret
```
* `etc/catalog/mongo.properties`
```
connector.name=mongodb
mongodb.seeds=localhost:27017
mongodb.credentials=root:secret@admin
```
* `etc/catalog/sheets.properties`
```
connector.name=gsheets
credentials-path=/path/to/json/key
metadata-sheet-id=sheet-id-with-metadata
```
* Execute `bin/launcher run`

## 5. Start the app `./mvnw compile quarkus:dev`, open `localhost:8080`

### Reference:
* [Quarkus guide](https://quarkus.io/guides/getting-started)
* [Trino docs](https://trino.io/docs/current/index.html)
* [Configuring Trino](https://trino.io/docs/current/installation/deployment.html)
* [Configuring MySQL connector](https://trino.io/docs/current/connector/mysql.html)
* [Configuring Mongo connector](https://trino.io/docs/current/connector/mongodb.html)
* [Configuring Google Sheets connector](https://trino.io/docs/current/connector/googlesheets.html)