forked from hashicorp/consul
/
internal_endpoint.go
126 lines (108 loc) · 3.42 KB
/
internal_endpoint.go
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package consul
import (
"github.com/hashicorp/consul/consul/structs"
"github.com/hashicorp/serf/serf"
)
// Internal endpoint is used to query the miscellaneous info that
// does not necessarily fit into the other systems. It is also
// used to hold undocumented APIs that users should not rely on.
type Internal struct {
srv *Server
}
// ChecksInState is used to get all the checks in a given state
func (m *Internal) NodeInfo(args *structs.NodeSpecificRequest,
reply *structs.IndexedNodeDump) error {
if done, err := m.srv.forward("Internal.NodeInfo", args, args, reply); done {
return err
}
// Get the state specific checks
state := m.srv.fsm.State()
return m.srv.blockingRPC(&args.QueryOptions,
&reply.QueryMeta,
state.QueryTables("NodeInfo"),
func() error {
reply.Index, reply.Dump = state.NodeInfo(args.Node)
return nil
})
}
// ChecksInState is used to get all the checks in a given state
func (m *Internal) NodeDump(args *structs.DCSpecificRequest,
reply *structs.IndexedNodeDump) error {
if done, err := m.srv.forward("Internal.NodeDump", args, args, reply); done {
return err
}
// Get the state specific checks
state := m.srv.fsm.State()
return m.srv.blockingRPC(&args.QueryOptions,
&reply.QueryMeta,
state.QueryTables("NodeDump"),
func() error {
reply.Index, reply.Dump = state.NodeDump()
return nil
})
}
// EventFire is a bit of an odd endpoint, but it allows for a cross-DC RPC
// call to fire an event. The primary use case is to enable user events being
// triggered in a remote DC.
func (m *Internal) EventFire(args *structs.EventFireRequest,
reply *structs.EventFireResponse) error {
if done, err := m.srv.forward("Internal.EventFire", args, args, reply); done {
return err
}
// Set the query meta data
m.srv.setQueryMeta(&reply.QueryMeta)
// Fire the event
return m.srv.UserEvent(args.Name, args.Payload)
}
// KeyringOperation will query the WAN and LAN gossip keyrings of all nodes.
func (m *Internal) KeyringOperation(
args *structs.KeyringRequest,
reply *structs.KeyringResponses) error {
// Only perform WAN keyring querying and RPC forwarding once
if !args.Forwarded {
args.Forwarded = true
m.executeKeyringOp(args, reply, true)
return m.srv.globalRPC("Internal.KeyringOperation", args, reply)
}
// Query the LAN keyring of this node's DC
m.executeKeyringOp(args, reply, false)
return nil
}
// executeKeyringOp executes the appropriate keyring-related function based on
// the type of keyring operation in the request. It takes the KeyManager as an
// argument, so it can handle any operation for either LAN or WAN pools.
func (m *Internal) executeKeyringOp(
args *structs.KeyringRequest,
reply *structs.KeyringResponses,
wan bool) {
var serfResp *serf.KeyResponse
var err error
var mgr *serf.KeyManager
if wan {
mgr = m.srv.KeyManagerWAN()
} else {
mgr = m.srv.KeyManagerLAN()
}
switch args.Operation {
case structs.KeyringList:
serfResp, err = mgr.ListKeys()
case structs.KeyringInstall:
serfResp, err = mgr.InstallKey(args.Key)
case structs.KeyringUse:
serfResp, err = mgr.UseKey(args.Key)
case structs.KeyringRemove:
serfResp, err = mgr.RemoveKey(args.Key)
}
errStr := ""
if err != nil {
errStr = err.Error()
}
reply.Responses = append(reply.Responses, &structs.KeyringResponse{
WAN: wan,
Datacenter: m.srv.config.Datacenter,
Messages: serfResp.Messages,
Keys: serfResp.Keys,
NumNodes: serfResp.NumNodes,
Error: errStr,
})
}