6 stable releases

2.0.4 May 28, 2023
2.0.3 Jul 29, 2022
2.0.2 Feb 1, 2022
1.0.4 Feb 1, 2022
1.0.1 Nov 30, 2021
Download history 41/week @ 2023-06-13 67/week @ 2023-06-20 67/week @ 2023-06-27 171/week @ 2023-07-04 72/week @ 2023-07-11 73/week @ 2023-07-18 41/week @ 2023-07-25 23/week @ 2023-08-01 33/week @ 2023-08-08 48/week @ 2023-08-15 26/week @ 2023-08-22 42/week @ 2023-08-29 46/week @ 2023-09-05 32/week @ 2023-09-12 24/week @ 2023-09-19 35/week @ 2023-09-26

145 downloads per month
Used in 6 crates (via env-url)

MIT license

9KB
118 lines

ENV Url

License Cargo Documentation

Env-composable service urls complete with key overrides as to facilitate maximum flexibility and to simplify integration with kubernetes.

Env mapping behaviors

ENV
{PREFIX}_URL set service url, disregarding other overrides
{PREFIX}_URL_ENV override {PREFIX}_URL env mapping
{PREFIX}_SCHEME set url scheme component
{PREFIX}_SCHEME_ENV override {PREFIX}_SCHEME env mapping
{PREFIX}_HOST set url host component
{PREFIX}_HOST_ENV override {PREFIX}_HOST env mapping
{PREFIX}_PATH set url path component
{PREFIX}_PATH_ENV override {PREFIX}_PATH env mapping
{PREFIX}_QUERY set url query component
{PREFIX}_QUERY_ENV override {PREFIX}_QUERY env mapping
{PREFIX}_USERINFO set url userinfo component
{PREFIX}_USERINFO_ENV override {PREFIX}_USERINFO env mapping

Example

use env_url::*;

#[derive(EnvURL)]
#[env_url(env_prefix = "REDIS", default = "redis://127.0.0.1:6379")]
pub struct RedisDB;

let service_url = RedisDB::service_url();

Kubernetes usage

As kubernetes can set services to env variables for service discovery, it's very useful to be able to override the env mappings like so

REDIS_HOST_ENV: STAGE_REDIS_MASTER_PORT_6379_TCP_ADDR
REDIS_PORT_ENV: STAGE_REDIS_MASTER_SERVICE_PORT_REDIS

Dependencies

~2–2.8MB
~86K SLoC