open-consul/agent/consul/auto_config_backend.go

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package consul
import (
"crypto/x509"
"fmt"
"net"
"time"
"github.com/hashicorp/consul/agent/connect"
"github.com/hashicorp/consul/agent/metadata"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/lib"
)
type autoConfigBackend struct {
Server *Server
}
func (b autoConfigBackend) ForwardRPC(method string, info structs.RPCInfo, reply interface{}) (bool, error) {
return b.Server.ForwardRPC(method, info, reply)
}
func (b autoConfigBackend) SignCertificate(csr *x509.CertificateRequest, id connect.CertURI) (*structs.IssuedCert, error) {
return b.Server.caManager.SignCertificate(csr, id)
}
// GetCARoots returns the CA roots.
func (b autoConfigBackend) GetCARoots() (*structs.IndexedCARoots, error) {
return b.Server.getCARoots(nil, b.Server.fsm.State())
}
// DatacenterJoinAddresses will return all the strings suitable for usage in
// retry join operations to connect to the the LAN or LAN segment gossip pool.
func (b autoConfigBackend) DatacenterJoinAddresses(partition, segment string) ([]string, error) {
members, err := b.Server.LANMembers(LANMemberFilter{
Segment: segment,
Partition: partition,
})
if err != nil {
if segment != "" {
return nil, fmt.Errorf("Failed to retrieve members for segment %s: %w", segment, err)
}
return nil, fmt.Errorf("Failed to retrieve members for partition %s: %w", structs.PartitionOrDefault(partition), err)
}
var joinAddrs []string
for _, m := range members {
if ok, _ := metadata.IsConsulServer(m); ok {
serfAddr := net.TCPAddr{IP: m.Addr, Port: int(m.Port)}
joinAddrs = append(joinAddrs, serfAddr.String())
}
}
return joinAddrs, nil
}
// CreateACLToken will create an ACL token from the given template
func (b autoConfigBackend) CreateACLToken(template *structs.ACLToken) (*structs.ACLToken, error) {
// we have to require local tokens or else it would require having these servers use a token with acl:write to make a
// token create RPC to the servers in the primary DC.
if !b.Server.LocalTokensEnabled() {
return nil, fmt.Errorf("Agent Auto Configuration requires local token usage to be enabled in this datacenter: %s", b.Server.config.Datacenter)
}
newToken := *template
// generate the accessor id
if newToken.AccessorID == "" {
accessor, err := lib.GenerateUUID(b.Server.checkTokenUUID)
if err != nil {
return nil, err
}
newToken.AccessorID = accessor
}
// generate the secret id
if newToken.SecretID == "" {
secret, err := lib.GenerateUUID(b.Server.checkTokenUUID)
if err != nil {
return nil, err
}
newToken.SecretID = secret
}
newToken.CreateTime = time.Now()
req := structs.ACLTokenBatchSetRequest{
Tokens: structs.ACLTokens{&newToken},
CAS: false,
}
// perform the request to mint the new token
if _, err := b.Server.raftApplyMsgpack(structs.ACLTokenSetRequestType, &req); err != nil {
return nil, err
}
// return the full token definition from the FSM
_, token, err := b.Server.fsm.State().ACLTokenGetByAccessor(nil, newToken.AccessorID, &newToken.EnterpriseMeta)
return token, err
}