Mainflux.mainflux/users/README.md

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# Users service
Users service provides an HTTP API for managing users. Through this API clients
are able to do the following actions:
- register new accounts
- obtain access tokens
- verify access tokens
For in-depth explanation of the aforementioned scenarios, as well as thorough
understanding of Mainflux, please check out the [official documentation][doc].
## Configuration
The service is configured using the environment variables presented in the
following table. Note that any unset variables will be replaced with their
default values.
| Variable | Description | Default |
|---------------------------|-------------------------------------------------------------------------|----------------|
| MF_USERS_LOG_LEVEL | Log level for Users (debug, info, warn, error) | error |
| MF_USERS_DB_HOST | Database host address | localhost |
| MF_USERS_DB_PORT | Database host port | 5432 |
| MF_USERS_DB_USER | Database user | mainflux |
| MF_USERS_DB_PASSWORD | Database password | mainflux |
| MF_USERS_DB | Name of the database used by the service | users |
| MF_USERS_DB_SSL_MODE | Database connection SSL mode (disable, require, verify-ca, verify-full) | disable |
| MF_USERS_DB_SSL_CERT | Path to the PEM encoded certificate file | |
| MF_USERS_DB_SSL_KEY | Path to the PEM encoded key file | |
| MF_USERS_DB_SSL_ROOT_CERT | Path to the PEM encoded root certificate file | |
| MF_USERS_HTTP_PORT | Users service HTTP port | 8180 |
| MF_USERS_GRPC_PORT | Users service gRPC port | 8181 |
| MF_USERS_SERVER_CERT | Path to server certificate in pem format | |
| MF_USERS_SERVER_KEY | Path to server key in pem format | |
| MF_USERS_SECRET | String used for signing tokens | users |
| MF_JAEGER_URL | Jaeger server URL | localhost:6831 |
| MF_EMAIL_DRIVER | Mail server driver, mail server for sending reset password token | smtp |
| MF_EMAIL_HOST | Mail server host | localhost |
| MF_EMAIL_PORT | Mail server port | 25 |
| MF_EMAIL_USERNAME | Mail server username | |
| MF_EMAIL_PASSWORD | Mail server password | |
| MF_EMAIL_FROM_ADDRESS | Email "from" address | |
| MF_EMAIL_FROM_NAME | Email "from" name | |
| MF_TOKEN_SECRET | Token secret for signing token used for password reset | |
| MF_TOKEN_DURATION | Token duration in minutes | 5 |
| MF_TOKEN_DEBUG_LEVEL | Token util debug level | info |
| MF_TOKEN_RESET_ENDPOINT | Password request reset endpoint, for constructing link | /reset-request |
## Deployment
The service itself is distributed as Docker container. The following snippet
provides a compose file template that can be used to deploy the service container
locally:
```yaml
version: "2"
services:
users:
image: mainflux/users:[version]
container_name: [instance name]
ports:
- [host machine port]:[configured HTTP port]
environment:
MF_USERS_LOG_LEVEL: [Users log level]
MF_USERS_DB_HOST: [Database host address]
MF_USERS_DB_PORT: [Database host port]
MF_USERS_DB_USER: [Database user]
MF_USERS_DB_PASS: [Database password]
MF_USERS_DB: [Name of the database used by the service]
MF_USERS_DB_SSL_MODE: [SSL mode to connect to the database with]
MF_USERS_DB_SSL_CERT: [Path to the PEM encoded certificate file]
MF_USERS_DB_SSL_KEY: [Path to the PEM encoded key file]
MF_USERS_DB_SSL_ROOT_CERT: [Path to the PEM encoded root certificate file]
MF_USERS_HTTP_PORT: [Service HTTP port]
MF_USERS_GRPC_PORT: [Service gRPC port]
MF_USERS_SECRET: [String used for signing tokens]
MF_USERS_SERVER_CERT: [String path to server certificate in pem format]
MF_USERS_SERVER_KEY: [String path to server key in pem format]
MF_JAEGER_URL: [Jaeger server URL]
MF_EMAIL_DRIVER: [Mail server driver smtp]
MF_EMAIL_HOST: [MF_EMAIL_HOST]
MF_EMAIL_PORT: [MF_EMAIL_PORT]
MF_EMAIL_USERNAME: [MF_EMAIL_USERNAME]
MF_EMAIL_PASSWORD: [MF_EMAIL_PASSWORD]
MF_EMAIL_FROM_ADDRESS: [MF_EMAIL_FROM_ADDRESS]
MF_EMAIL_FROM_NAME: [MF_EMAIL_FROM_NAME]
MF_TOKEN_SECRET: [MF_TOKEN_SECRET]
MF_TOKEN_DURATION: [MF_TOKEN_DURATION]
MF_TOKEN_DEBUG_LEVEL: [MF_TOKEN_DEBUG_LEVEL]
MF_TOKEN_RESET_ENDPOINT: [MF_TOKEN_RESET_ENDPOINT]
```
To start the service outside of the container, execute the following shell script:
```bash
# download the latest version of the service
go get github.com/mainflux/mainflux
cd $GOPATH/src/github.com/mainflux/mainflux
# compile the service
make users
# copy binary to bin
make install
# set the environment variables and run the service
MF_USERS_LOG_LEVEL=[Users log level] MF_USERS_DB_HOST=[Database host address] MF_USERS_DB_PORT=[Database host port] MF_USERS_DB_USER=[Database user] MF_USERS_DB_PASS=[Database password] MF_USERS_DB=[Name of the database used by the service] MF_USERS_DB_SSL_MODE=[SSL mode to connect to the database with] MF_USERS_DB_SSL_CERT=[Path to the PEM encoded certificate file] MF_USERS_DB_SSL_KEY=[Path to the PEM encoded key file] MF_USERS_DB_SSL_ROOT_CERT=[Path to the PEM encoded root certificate file] MF_USERS_HTTP_PORT=[Service HTTP port] MF_USERS_GRPC_PORT=[Service gRPC port] MF_USERS_SECRET=[String used for signing tokens] MF_USERS_SERVER_CERT=[Path to server certificate] MF_USERS_SERVER_KEY=[Path to server key] MF_JAEGER_URL=[Jaeger server URL] $GOBIN/mainflux-users
```
## Usage
For more information about service capabilities and its usage, please check out
the [API documentation](swagger.yaml).
[doc]: http://mainflux.readthedocs.io