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https://github.com/watson-developer-cloud/tone-analyzer-nodejs

Sample Node.js Application for the IBM Tone Analyzer Service
https://github.com/watson-developer-cloud/tone-analyzer-nodejs

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Sample Node.js Application for the IBM Tone Analyzer Service

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🚀 Tone Analyzer Sample Application


This Node.js app demonstrates some of the Tone Analyzer service features.




Travis


semantic-release

The IBM Watson [Tone Analyzer][docs] service is a cognitive linguistic analysis service that detects 7 tones which are most commonly used to detect the tone of written text. These are: anger, fear, joy, sadness, confident, analytical, and tentative.

[![Greenkeeper badge](https://badges.greenkeeper.io/watson-developer-cloud/tone-analyzer-nodejs.svg)](https://greenkeeper.io/)

## Prerequisites

1. Sign up for an [IBM Cloud account](https://cloud.ibm.com/registration/).
1. Download the [IBM Cloud CLI](https://cloud.ibm.com/docs/cli/index.html#overview).
1. Create an instance of the Tone Analyzer service and get your credentials:
- Go to the [Tone Analyzer](https://cloud.ibm.com/catalog/services/tone-analyzer) page in the IBM Cloud Catalog.
- Log in to your IBM Cloud account.
- Click **Create**.
- Click **Show** to view the service credentials.
- Copy the `apikey` value, or copy the `username` and `password` values if your service instance doesn't provide an `apikey`.
- Copy the `url` value.

## Configuring the application

1. In the application folder, copy the *.env.example* file and create a file called *.env*

```
cp .env.example .env
```

2. Open the *.env* file and add the service credentials that you obtained in the previous step.

Example *.env* file that configures the `apikey` and `url` for a Tone Analyzer service instance hosted in the US East region:

```
TONE_ANALYZER_IAM_APIKEY=X4rbi8vwZmKpXfowaS3GAsA7vdy17Qh7km5D6EzKLHL2
TONE_ANALYZER_URL=https://gateway-wdc.watsonplatform.net/tone-analyzer/api
```

- If your service instance uses `username` and `password` credentials, add the `TONE_ANALYZER_USERNAME` and `TONE_ANALYZER_PASSWORD` variables to the *.env* file.

Example *.env* file that configures the `username`, `password`, and `url` for a Tone Analyzer service instance hosted in the Sydney region:

```
TONE_ANALYZER_USERNAME=522be-7b41-ab44-dec3-g1eab2ha73c6
TONE_ANALYZER_PASSWORD=A4Z5BdGENrwu8
TONE_ANALYZER_URL=https://gateway-syd.watsonplatform.net/tone-analyzer/api
```
## Running locally

1. Install the dependencies

```
npm install
```

1. Run the application

```
npm start
```

1. View the application in a browser at `localhost:3000`

## Deploying to IBM Cloud as a Cloud Foundry Application

1. Login to IBM Cloud with the [IBM Cloud CLI](https://cloud.ibm.com/docs/cli/index.html#overview)

```
ibmcloud login
```

1. Target a Cloud Foundry organization and space.

```
ibmcloud target --cf
```

1. Edit the *manifest.yml* file. Change the **name** field to something unique.
For example, `- name: my-app-name`.

1. Deploy the application

```
ibmcloud app push
```

1. View the application online at the app URL. For example: https://my-app-name.mybluemix.net

## Deploying to IBM Cloud as a Kubernetes Application

1. Login to IBM Cloud with the [IBM Cloud CLI](https://cloud.ibm.com/docs/cli/index.html#overview)

```
ibmcloud login
```
1. Install the Kubernetes CLI and configure it to run [`kubectl`](https://console.bluemix.net/docs/containers/cs_cli_install.html#cs_cli_configure) commands.

1. Edit the `kube-deploy.yaml` file and update the environment variables in the container with the service credentials

1. Deploy the application
```bash
kubectl apply -f kube-deploy.yaml
```
Expected output:
```none
service/tone-analyzer-nodejs created
deployment.apps/tone-analyzer-nodejs created
ingress.extensions/tone-analyzer-nodejs created
```

![](https://www.reactiongifs.com/wp-content/uploads/2012/08/well_done_sir.gif)
## License

This sample code is licensed under Apache 2.0.
Full license text is available in [LICENSE](LICENSE).

## Contributing

See [CONTRIBUTING](CONTRIBUTING.md).

## Open Source @ IBM

Find more open source projects on the
[IBM Github Page](http://ibm.github.io/).

[service_url]: https://www.ibm.com/watson/services/tone-analyzer/
[docs]: https://cloud.ibm.com/docs/services/tone-analyzer/index.html#about