Ejemplo n.º 1
0
// execute runs a prepared query in the local DC without any failover. We don't
// apply any sorting options or ACL checks at this level - it should be done up above.
func (p *PreparedQuery) execute(query *structs.PreparedQuery,
	reply *structs.PreparedQueryExecuteResponse) error {
	state := p.srv.fsm.State()
	_, nodes, err := state.CheckServiceNodes(query.Service.Service)
	if err != nil {
		return err
	}

	// Filter out any unhealthy nodes.
	nodes = nodes.Filter(query.Service.OnlyPassing)

	// Apply the tag filters, if any.
	if len(query.Service.Tags) > 0 {
		nodes = tagFilter(query.Service.Tags, nodes)
	}

	// Capture the nodes and pass the DNS information through to the reply.
	reply.Service = query.Service.Service
	reply.Nodes = nodes
	reply.DNS = query.DNS

	// Stamp the result for this datacenter.
	reply.Datacenter = p.srv.config.Datacenter

	return nil
}
Ejemplo n.º 2
0
// execute runs a prepared query in the local DC without any failover. We don't
// apply any sorting options at this level - it should be done up above.
func (p *PreparedQuery) execute(query *structs.PreparedQuery,
	reply *structs.PreparedQueryExecuteResponse) error {
	state := p.srv.fsm.State()
	_, nodes, err := state.CheckServiceNodes(query.Service.Service)
	if err != nil {
		return err
	}

	// This is kind of a paranoia ACL check, in case something changed with
	// the token from the time the query was registered. Note that we use
	// the token stored with the query, NOT the passed-in one, which is
	// critical to how queries work (the query becomes a proxy for a lookup
	// using the ACL it was created with).
	acl, err := p.srv.resolveToken(query.Token)
	if err != nil {
		return err
	}
	if acl != nil && !acl.ServiceRead(query.Service.Service) {
		p.srv.logger.Printf("[WARN] consul.prepared_query: Execute of prepared query for service '%s' denied due to ACLs", query.Service.Service)
		return permissionDeniedErr
	}

	// Filter out any unhealthy nodes.
	nodes = nodes.Filter(query.Service.OnlyPassing)

	// Apply the tag filters, if any.
	if len(query.Service.Tags) > 0 {
		nodes = tagFilter(query.Service.Tags, nodes)
	}

	// Capture the nodes and pass the DNS information through to the reply.
	reply.Service = query.Service.Service
	reply.Nodes = nodes
	reply.DNS = query.DNS

	// Stamp the result for this datacenter.
	reply.Datacenter = p.srv.config.Datacenter

	return nil
}