# service-attachments-node

> Blob attachments microservice in Node.js / ES2017

Latest version **1.1.0** (published 2022-12-20) · MIT license · 0 weekly downloads

## Install

```sh
npm install service-attachments-node
pnpm add service-attachments-node
yarn add service-attachments-node
bun add service-attachments-node
```

## Health

**Score 25/100 (F)** — status: abandoned.

Positive: has types; no vulnerabilities; high quality score.

Warnings: low downloads; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 1.1.0 |
| Published | 2022-12-20 |
| First published | 2022-05-11 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | CommonJS |
| Node | >=14.0.0 |
| Dependencies | 10 |
| Unpacked size | 143.6 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Author | Conceptual Vision Consulting LLC |
| Maintainers | pipdeveloper |
| Keywords | pip.services, blobs, attachments |

## Links

- npm: https://www.npmjs.com/package/service-attachments-node
- Repository: https://github.com/pip-services-content2/service-attachments-node
- Homepage: https://github.com/pip-services-content2/service-attachments-node#readme
- Issues: https://github.com/pip-services-content2/service-attachments-node/issues
- npm.io page: https://npm.io/package/service-attachments-node

## Dependencies (10)

- [google-protobuf](https://npm.io/package/google-protobuf.md) ^3.20.1
- [client-blobs-node](https://npm.io/package/client-blobs-node.md) ^1.0.*
- [pip-services3-aws-nodex](https://npm.io/package/pip-services3-aws-nodex.md) ^1.1.*
- [pip-services3-rpc-nodex](https://npm.io/package/pip-services3-rpc-nodex.md) ^1.2.*
- [pip-services3-data-nodex](https://npm.io/package/pip-services3-data-nodex.md) ^1.0.*
- [pip-services3-commons-nodex](https://npm.io/package/pip-services3-commons-nodex.md) ^1.0.*
- [pip-services3-mongodb-nodex](https://npm.io/package/pip-services3-mongodb-nodex.md) ^1.0.*
- [pip-services3-swagger-nodex](https://npm.io/package/pip-services3-swagger-nodex.md) ^1.0.*
- [pip-services3-container-nodex](https://npm.io/package/pip-services3-container-nodex.md) ^1.0.*
- [pip-services3-components-nodex](https://npm.io/package/pip-services3-components-nodex.md) ^1.4.*

## Recent versions

- 1.1.0 (latest) — 2022-12-20
- 1.0.0 — 2022-05-11

## README

# Blob Attachments Microservice

This is a blob attachments microservice from Pip.Services library. 
It records all documents that attached to a particilar blob.
When last document is disattached, the blob gets removed.

The microservice currently supports the following deployment options:
* Deployment platforms: Standalone Process, Seneca Plugin
* External APIs: HTTP/REST, Seneca
* Persistence: Memory, Flat Files, MongoDB

This microservice has no dependencies on other microservices.

<a name="links"></a> Quick Links:

* [Download Links](doc/Downloads.md)
* [Development Guide](doc/Development.md)
* [Configuration Guide](doc/Configuration.md)
* [Deployment Guide](doc/Deployment.md)
* Client SDKs
  - [Node.js SDK](https://github.com/pip-services-content2/client-attachments-node)
* Communication Protocols
  - [HTTP Version 1](doc/HttpProtocolV1.md)
  - [Seneca Version 1](doc/SenecaProtocolV1.md)

##  Contract

Logical contract of the microservice is presented below. For physical implementation (HTTP/REST, Thrift, Seneca, Lambda, etc.),
please, refer to documentation of the specific protocol.

```typescript
class BlobAttachmentV1 implements IStringIdentifiable {
    public id: string;
    public references: ReferenceV1[];
}

class ReferenceV1
{
    public id: string;
    public type: string;
    public name: string;
}

interface IAttachmentsV1 {
    getAttachmentById(correlationId: string, id: string): Promise<BlobAttachmentV1>;
    
    addAttachments(correlationId: string, reference: ReferenceV1, ids: string[]): Promise<BlobAttachmentV1[]>;

    updateAttachments(correlationId: string, reference: ReferenceV1, oldIds: string[], newIds: string[]): Promise<BlobAttachmentV1[]>;

    removeAttachments(correlationId: string, reference: ReferenceV1, ids: string[]): Promise<BlobAttachmentV1[]>;

    deleteAttachmentById(correlationId: string, id: string): Promise<BlobAttachmentV1>;
}
```

## Download

Right now the only way to get the microservice is to check it out directly from github repository
```bash
git clone git@github.com:pip-services-content2/service-attachments-node.git
```

Pip.Service team is working to implement packaging and make stable releases available for your 
as zip downloadable archieves.

## Run

Add **config.json** file to the root of the microservice folder and set configuration parameters.
As the starting point you can use example configuration from **config.example.yml** file. 

Example of microservice configuration
```yaml
- descriptor: "pip-services-container:container-info:default:default:1.0"
  name: "service-attachments"
  description: "Attachments microservice"

- descriptor: "pip-services-commons:logger:console:default:1.0"
  level: "trace"

- descriptor: "service-attachments:persistence:file:default:1.0"
  path: "./data/attachments.json"

- descriptor: "service-attachments:controller:default:default:1.0"

- descriptor: "service-attachments:service:http:default:1.0"
  connection:
    protocol: "http"
    host: "0.0.0.0"
    port: 8080
```
 
For more information on the microservice configuration see [Configuration Guide](Configuration.md).

Start the microservice using the command:
```bash
node run
```

## Use

The easiest way to work with the microservice is to use client SDK. 
The complete list of available client SDKs for different languages is listed in the [Quick Links](#links)

If you use Node.js then you should add dependency to the client SDK into **package.json** file of your project
```javascript
{
    ...
    dependencies: {
        ...
        "client-attachments-node": "^1.0.*"
        ...
    }
}
```

Inside your code get the reference to the client SDK
```javascript
var sdk = new require('client-attachments-node');
```

Define client configuration parameters that match configuration of the microservice external API
```javascript
// Client configuration
var config = {
    connection: {
        protocol: 'http',
        host: 'localhost', 
        port: 8080
    }
};
```

Instantiate the client and open connection to the microservice
```javascript
// Create the client instance
var client = sdk.AttachmentsHttpClientV1(config);

// Connect to the microservice
try {
    await client.open(null);
    // Work with the microservice
    ...
} catch(err) {
    console.error('Connection to the microservice failed');
    console.error(err);
}
```

Now the client is ready to perform operations
```javascript
// Log system event
let attachments = await client.addAttachments(
    null,
    {
        id: '1',
        type: 'document',
        name: 'my_document'
    },
    ['1', '2', '3']
);
```

```javascript
var now = new Date();

// Get the list system events
let attachment = await client.getAttachmentById(
    null,
    '1'
);
```    

## Acknowledgements

This microservice was created and currently maintained by *Sergey Seroukhov*.

---
_Source: https://npm.io/package/service-attachments-node · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._