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Added instructions on installing psycopg2 using psycopg2-binary #239

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Added instructions on installing psycopg2 using psycopg2-binary
robel16 Mar 23, 2024
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Added instructions on installing psycopg2 using psycopg2-binary
robel16 Mar 23, 2024
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Added instructions on installing psycopg2 using psycopg2-binary
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252 changes: 144 additions & 108 deletions backend/Readme.md
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Original file line number Diff line number Diff line change
Expand Up @@ -20,130 +20,153 @@
git clone https://github.com/hotosm/raw-data-api.git && cd backend
```

- Install Requirements
## Installation Guide

Install [psycopg2](https://pypi.org/project/psycopg2/), [osmium](https://pypi.org/project/osmium/) and [dateutil](https://pypi.org/project/python-dateutil/) , wget in your python env . You can install using `requirements.txt` too
### psycopg2

In order to install psycopg2, you need to install the psycopg2-binary package. You can do this by running:

```bash
pip install psycopg2-binary
```

Alternatively, you can refer to the official documentation for psycopg2 installation https://www.psycopg.org/docs/install.html#build-prerequisites , which provides detailed information about the build prerequisites and installation steps.

## Install Requirements

Install [psycopg2](https://pypi.org/project/psycopg2/), [osmium](https://pypi.org/project/osmium/) and [dateutil](https://pypi.org/project/python-dateutil/) , wget in your python env . You can install using `requirements.txt` too

```

pip install -r requirements.txt

```

- Start the Process

You can either export your db params as env variables or pass to script , or create .env and hit `source .env`

```

export PGHOST=localhost
export PGPORT=5432
export PGUSER=admin
export PGPASSWORD=admin
export PGDATABASE=postgres

```

Choose your source for the Import

> You can Download Planet pbf file [Here](https://planet.osm.org/pbf/) or Use Geofabrik Pbf file [Here](https://osm-internal.download.geofabrik.de/index.html) with full metadata (Tested with .pbf file) , or pass download link to script itself . Follow -h help

- Test with the sample data

```
pip install -r requirements.txt
python raw_backend --insert
```

- Start the Process
> This will insert the sample data provided on the code , You can check your backend setup with this

You can either export your db params as env variables or pass to script , or create .env and hit `source .env`
- For eg : To import Turkey and Enable replication later on

```
export PGHOST=localhost
export PGPORT=5432
export PGUSER=admin
export PGPASSWORD=admin
export PGDATABASE=postgres
python raw_backend --insert --replication --source https://download.geofabrik.de/europe/turkey-latest.osm.pbf --country 127
```

Choose your source for the Import

> You can Download Planet pbf file [Here](https://planet.osm.org/pbf/) or Use Geofabrik Pbf file [Here](https://osm-internal.download.geofabrik.de/index.html) with full metadata (Tested with .pbf file) , or pass download link to script itself . Follow -h help

- Test with the sample data

```
python raw_backend --insert
```

> This will insert the sample data provided on the code , You can check your backend setup with this

- For eg : To import Turkey and Enable replication later on

```
python raw_backend --insert --replication --source https://download.geofabrik.de/europe/turkey-latest.osm.pbf --country 127
```

> Here Insert option will do the import after downloading osm.pbf file from source , You can supply filepath of already downloaded file to --source as well . Replication will enable and Prepare the tables for replication and start the replication right away until data becomes now , Country parameter is read from fid of /backend/countries which will make sure to only maintains the replication data for that country


- Import your osm file and run replication for only your custom geojson

```
python raw_backend --replication --boundary pokhara.geojson
```
Example of geojson :
```
{
"type": "Feature",
"properties": {},
"geometry": {
"coordinates": [
[
[
83.90895770965955,
28.279633888511327
],
[
83.90895770965955,
28.131383546395526
],
[
84.10168708213502,
28.131383546395526
],
[
84.10168708213502,
28.279633888511327
],
[
83.90895770965955,
28.279633888511327
]
]
],
"type": "Polygon"
}
}
```
> Here Insert option will do the import after downloading osm.pbf file from source , You can supply filepath of already downloaded file to --source as well . Replication will enable and Prepare the tables for replication and start the replication right away until data becomes now , Country parameter is read from fid of /backend/countries which will make sure to only maintains the replication data for that country

- Import your osm file and run replication for only your custom geojson

```
python raw_backend --replication --boundary pokhara.geojson
```

To Run Replication only
Example of geojson :
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From here on All the installation instructions are moved to code block . Do verify that and make sure it is readable. You can preview your file and you will notice something like this
image


```
python raw_backend --replication
{
"type": "Feature",
"properties": {},
"geometry": {
"coordinates": [
[
[
83.90895770965955,
28.279633888511327
],
[
83.90895770965955,
28.131383546395526
],
[
84.10168708213502,
28.131383546395526
],
[
84.10168708213502,
28.279633888511327
],
[
83.90895770965955,
28.279633888511327
]
]
],
"type": "Polygon"
}
}
```

> By default this command will run replciation until data becomes up to date and exit ! You can run this script on your custom frequency by specifying your cron / prefeered way to wake the script do the job and sleep
To Run Replication only

````

python raw_backend --replication

Options to Run the Script :
```

```
-h, --help show this help message and exit
--source SOURCE Data source link or file path
--host HOST DB host
--port PORT DB port
--user USER DB user
--password PASSWORD DB password
--database DATABASE DB name
--include_ref Include ref in output tables
--replication Prepare tables for replication and Runs Replication
--country COUNTRY id of the country , if you are loading country , it will filter replication data
--boundary Takes geojson file path or geojson string itself to keep replication within the region
--insert Run osm2pgsql to insert data , Initial Creation Step
--update Run Update on table fields for country info
--download_dir DOWNLOAD_DIR
The directory to download the source file to
--post_index Run Post index only on table
```
> By default this command will run replciation until data becomes up to date and exit ! You can run this script on your custom frequency by specifying your cron / prefeered way to wake the script do the job and sleep



Options to Run the Script :

If you are interested on Manual setup find Guide [here](./Manual.md)
```

-h, --help show this help message and exit
--source SOURCE Data source link or file path
--host HOST DB host
--port PORT DB port
--user USER DB user
--password PASSWORD DB password
--database DATABASE DB name
--include_ref Include ref in output tables
--replication Prepare tables for replication and Runs Replication
--country COUNTRY id of the country , if you are loading country , it will filter replication data
--boundary Takes geojson file path or geojson string itself to keep replication within the region
--insert Run osm2pgsql to insert data , Initial Creation Step
--update Run Update on table fields for country info
--download_dir DOWNLOAD_DIR
The directory to download the source file to
--post_index Run Post index only on table

```

If you are interested on Manual setup find Guide [here](./Manual.md)

## Running the backend service via Systemd

- Create a systemd unit file for raw-data-backend service

```

$ sudo systemctl edit --full --force raw-data-backend.service

```

```

[Unit]
Description=Raw Data Backend Service
Documentation=https://github.com/hotosm/raw-data-api/blob/develop/backend/Readme.md
Expand All @@ -166,43 +189,50 @@ WatchdogSec=43200

[Install]
WantedBy=multi-user.target

```
- Start Your service and look at the status
```

$ sudo systemctl start raw-data-backend.service
$ sudo systemctl status raw-data-backend.service

```

```

● raw-data-backend.service - Raw Data Backend Service
Loaded: loaded (/etc/systemd/system/raw-data-backend.service; disabled; vendor preset: enabled)
Active: active (running) since Mon 2023-02-13 14:30:03 UTC; 4min 25s ago
Docs: https://github.com/hotosm/raw-data-api/blob/develop/backend/Readme.md
Main PID: 50561 (python)
Tasks: 9 (limit: 4700)
Memory: 94.7M
CPU: 14.996s
CGroup: /system.slice/raw-data-backend.service
├─50561 /opt/raw-data-api/backend/venv/bin/python app --replication --run_minutely
├─50563 python /opt/raw-data-api/backend/replication update -s raw.lua --max-diff-size 10
└─50704 osm2pgsql --append --slim --prefix planet_osm --output=flex --extra-attributes --style raw.lua -d app_backend -U adm_app_backend -H rawdat.postgres.database.azure.com >
Loaded: loaded (/etc/systemd/system/raw-data-backend.service; disabled; vendor preset: enabled)
Active: active (running) since Mon 2023-02-13 14:30:03 UTC; 4min 25s ago
Docs: https://github.com/hotosm/raw-data-api/blob/develop/backend/Readme.md
Main PID: 50561 (python)
Tasks: 9 (limit: 4700)
Memory: 94.7M
CPU: 14.996s
CGroup: /system.slice/raw-data-backend.service
├─50561 /opt/raw-data-api/backend/venv/bin/python app --replication --run_minutely
├─50563 python /opt/raw-data-api/backend/replication update -s raw.lua --max-diff-size 10
└─50704 osm2pgsql --append --slim --prefix planet_osm --output=flex --extra-attributes --style raw.lua -d app_backend -U adm_app_backend -H rawdat.postgres.database.azure.com >

Feb 13 14:30:03 raw-data-backend-production systemd[1]: Started Raw Data Backend Service.
Feb 13 14:30:04 raw-data-backend-production python[50562]: 2023-02-13 14:30:04 [INFO]: Initialised updates for service 'https://planet.openstreetmap.org/replication/minute'.
Feb 13 14:30:04 raw-data-backend-production python[50562]: 2023-02-13 14:30:04 [INFO]: Starting at sequence 5348603 (2022-12-06 00:59:10+00:00).
Feb 13 14:30:05 raw-data-backend-production python[50563]: 2023-02-13 14:30:05 [INFO]: Using replication service 'https://planet.openstreetmap.org/replication/minute'. Current sequence 5348603 (2>
Feb 13 14:30:10 raw-data-backend-production python[50704]: 2023-02-13 14:30:10 osm2pgsql version 1.6.0
Feb 13 14:30:10 raw-data-backend-production python[50704]: 2023-02-13 14:30:10 Database version: 14.6
Feb 13 14:30:10 raw-data-backend-production python[50704]: 2023-02-13 14:30:10 PostGIS version: 3.2
Feb 13 14:30:10 raw-data-backend-production python[50704]: 2023-02-13 14:30:10 osm2pgsql version 1.6.0
Feb 13 14:30:10 raw-data-backend-production python[50704]: 2023-02-13 14:30:10 Database version: 14.6
Feb 13 14:30:10 raw-data-backend-production python[50704]: 2023-02-13 14:30:10 PostGIS version: 3.2

```

- Setup your every minute update timer
- Setup your every minute update timer
```

$ sudo systemctl edit --full --force raw-data-backend.timer

```

```

[Unit]
Description=Trigger a rawdata database update

Expand All @@ -212,11 +242,17 @@ OnUnitActiveSec=5min

[Install]
WantedBy=timers.target

```

- Enable timer and reload your systemctl

```

$ sudo systemctl enable raw-data-backend.timer
$ sudo systemctl daemon-reload

```

```
````