open-consul/api
Paul Banks 5b0d4db6bc Support Agent Caching for Service Discovery Results (#4541)
* Add cache types for catalog/services and health/services and basic test that caching works

* Support non-blocking cache types with Cache-Control semantics.

* Update API docs to include caching info for every endpoint.

* Comment updates per PR feedback.

* Add note on caching to the 10,000 foot view on the architecture page to make the new data path more clear.

* Document prepared query staleness quirk and force all background requests to AllowStale so we can spread service discovery load across servers.
2018-10-10 16:55:34 +01:00
..
README.md Copy-and-paste Go client example (#4448) 2018-07-30 12:48:19 +01:00
acl.go Spelling (#3958) 2018-03-19 16:56:00 +00:00
acl_test.go Adds a new /v1/acl/bootstrap API (#3349) 2017-08-02 17:05:18 -07:00
agent.go Implementation of Weights Data structures (#4468) 2018-09-07 15:30:47 +01:00
agent_test.go Fixes #4421: General solution to stop blocking queries with index 0 (#4437) 2018-07-25 20:26:27 +01:00
api.go Support Agent Caching for Service Discovery Results (#4541) 2018-10-10 16:55:34 +01:00
api_test.go Support Agent Caching for Service Discovery Results (#4541) 2018-10-10 16:55:34 +01:00
catalog.go Implementation of Weights Data structures (#4468) 2018-09-07 15:30:47 +01:00
catalog_test.go Support Agent Caching for Service Discovery Results (#4541) 2018-10-10 16:55:34 +01:00
connect.go api: fix up some comments and rename IssuedCert to LeafCert 2018-06-14 09:41:56 -07:00
connect_ca.go connect/ca: add configurable leaf cert TTL 2018-07-16 13:33:37 -07:00
connect_ca_test.go Merge pull request #4400 from hashicorp/leaf-cert-ttl 2018-07-25 17:53:25 -07:00
connect_intention.go agent: 400 error on invalid UUID format, api handles errors properly 2018-06-27 07:40:06 +02:00
connect_intention_test.go agent: 400 error on invalid UUID format, api handles errors properly 2018-06-27 07:40:06 +02:00
coordinate.go Merge branch 'coordinate-node-endpoint' of github.com:hashicorp/consul into esm-changes 2017-10-26 19:20:24 -07:00
coordinate_test.go Move check definition to a sub-struct 2017-11-01 14:54:46 -07:00
event.go Revert "fixed: body not closed for non HTTP 200 responses" 2015-01-19 11:51:51 +09:00
event_test.go api: refactor: unify naming of API tests 2017-07-07 09:22:34 +02:00
health.go Misc comment cleanups 2018-06-25 12:24:16 -07:00
health_test.go Misc comment cleanups 2018-06-25 12:24:16 -07:00
kv.go Simplify string(buf.Bytes()) to buf.String() (#3590) 2017-10-18 13:26:09 -07:00
kv_test.go api: refactor: unify naming of API tests 2017-07-07 09:22:34 +02:00
lock.go Fix lock and semaphore timeouts 2018-07-06 10:55:25 +01:00
lock_test.go Improve resilience of api pkg tests (#4676) 2018-09-18 17:47:01 +01:00
operator.go Moves operator sub-functions into their own files. 2017-03-30 12:35:50 -07:00
operator_area.go Remove operator_area note from godoc overview (#4603) 2018-08-28 16:02:24 -04:00
operator_autopilot.go Simplify string(buf.Bytes()) to buf.String() (#3590) 2017-10-18 13:26:09 -07:00
operator_autopilot_test.go BUGFIX: Unit test relying on WaitForLeader() did not work due to wrong test (#4472) 2018-08-06 19:46:09 -04:00
operator_keyring.go Shows the segment name in the keyring API and command output. 2017-09-07 12:17:39 -07:00
operator_keyring_test.go New config parser, HCL support, multiple bind addrs (#3480) 2017-09-25 11:40:42 -07:00
operator_raft.go Move Raft protocol version for list peers end point to server side, fix unit tests. This fixes #3449 2017-09-26 09:35:39 -05:00
operator_raft_test.go api: refactor: unify naming of API tests 2017-07-07 09:22:34 +02:00
operator_segment.go Change segment list endpoint in docs/client api 2017-09-01 12:40:07 -07:00
prepared_query.go api: change Connect to a query option 2018-06-25 12:24:14 -07:00
prepared_query_test.go Allow ignoring checks by ID when defining a PreparedQuery. Fixes #3727. 2018-04-10 14:04:16 +01:00
raw.go api: Refactoring into shared write logic 2015-02-18 15:15:02 -08:00
semaphore.go Fix lock and semaphore timeouts 2018-07-06 10:55:25 +01:00
semaphore_test.go Improve resilience of api pkg tests (#4676) 2018-09-18 17:47:01 +01:00
session.go Expands and rework context support in the API client. (#3273) 2017-07-14 17:30:08 -07:00
session_test.go Improve resilience of api pkg tests (#4676) 2018-09-18 17:47:01 +01:00
snapshot.go Adds support for snapshots and restores. (#2396) 2016-10-25 19:20:24 -07:00
snapshot_test.go api: refactor: prefix all API tests with API_ 2017-07-07 09:22:34 +02:00
status.go Revert "fixed: body not closed for non HTTP 200 responses" 2015-01-19 11:51:51 +09:00
status_test.go api: refactor: prefix all API tests with API_ 2017-07-07 09:22:34 +02:00

README.md

Consul API client

This package provides the api package which attempts to provide programmatic access to the full Consul API.

Currently, all of the Consul APIs included in version 0.6.0 are supported.

Documentation

The full documentation is available on Godoc

Usage

Below is an example of using the Consul client:

package main

import "github.com/hashicorp/consul/api"
import "fmt"

func main() {
	// Get a new client
	client, err := api.NewClient(api.DefaultConfig())
	if err != nil {
		panic(err)
	}

	// Get a handle to the KV API
	kv := client.KV()

	// PUT a new KV pair
	p := &api.KVPair{Key: "REDIS_MAXCLIENTS", Value: []byte("1000")}
	_, err = kv.Put(p, nil)
	if err != nil {
		panic(err)
	}

	// Lookup the pair
	pair, _, err := kv.Get("REDIS_MAXCLIENTS", nil)
	if err != nil {
		panic(err)
	}
	fmt.Printf("KV: %v %s\n", pair.Key, pair.Value)
}

To run this example, start a Consul server:

consul agent -dev

Copy the code above into a file such as main.go.

Install and run. You'll see a key (REDIS_MAXCLIENTS) and value (1000) printed.

$ go get
$ go run main.go
KV: REDIS_MAXCLIENTS 1000

After running the code, you can also view the values in the Consul UI on your local machine at http://localhost:8500/ui/dc1/kv