open-vault/builtin/logical/ssh/backend.go

package ssh

import (
	"strings"

	"github.com/hashicorp/vault/logical"
	"github.com/hashicorp/vault/logical/framework"
)

func Factory(conf *logical.BackendConfig) (logical.Backend, error) {
	return Backend().Setup(conf)
}

func Backend() *framework.Backend {
	var b backend
	b.Backend = &framework.Backend{
		Help: strings.TrimSpace(backendHelp),

		PathsSpecial: &logical.Paths{
			Root: []string{"config/*"},
		},

		Paths: []*framework.Path{
			pathConfigLease(&b),
			pathKeys(&b),
			pathRoles(&b),
			pathRoleCreate(&b),
			pathLookup(&b),
		},

		Secrets: []*framework.Secret{
			secretSSHKey(&b),
		},
	}
	return b.Backend
}

type backend struct {
	*framework.Backend
}

const backendHelp = `
The SSH backend dynamically generates SSH private keys for remote hosts.
The generated key has a configurable lease set and are automatically 
revoked at the end of the lease.

After mounting this backend, configure the lease using the 'config/lease'
endpoint. The shared SSH key belonging to any infrastructure should be 
registered with the 'roles/' endpoint before dynamic keys for remote hosts 
can be generated.
`