func (s *Server) parseSchemas() error {
r, err := router.NewRouter(s.cfg)
if err != nil {
return err
}
s.schemas = make(map[string]*Schema)
for _, v := range s.cfg.Schemas {
if _, ok := s.schemas[v.DB]; ok {
return fmt.Errorf("duplicate schema %s", v.DB)
}
if len(v.Nodes) == 0 {
return fmt.Errorf("schema %s must have a node", v.DB)
}
nodes := make(map[string]*Node)
for _, n := range v.Nodes {
if s.getNode(n) == nil {
return fmt.Errorf("schema %s node %s is not exists", v.DB, n)
}
if _, ok := nodes[n]; ok {
return fmt.Errorf("schema %s node %s duplicate", v.DB, n)
}
nodes[n] = s.getNode(n)
}
dbRules := r.GetDBRules(v.DB)
if dbRules == nil {
if len(v.Nodes) != 1 {
return fmt.Errorf("schema %s must be set a rule for multi nodes %v", v.DB, v.Nodes)
} else {
dbRules = router.NewDefaultDBRules(v.DB, v.Nodes[0])
}
}
for _, v := range dbRules.Rules {
for _, n := range v.Nodes {
if s.getNode(n) == nil {
return fmt.Errorf("rule %s node %s is not exists", v, n)
}
}
}
if s.getNode(dbRules.DefaultRule.Nodes[0]) == nil {
return fmt.Errorf("rule %s node %s is not exists", v, dbRules.DefaultRule.Nodes[0])
}
s.schemas[v.DB] = &Schema{
db: v.DB,
nodes: nodes,
rule: dbRules,
}
}
return nil
}
func newTestDBRule() *router.DBRules {
var s = `
rules:
-
db: mixer
table: test1
key: id
type: hash
nodes: node(1-10)
-
db: mixer
table: test2
key: id
nodes: node1,node2,node3
type: range
# range is -inf-10000 10000-20000 20000-+inf
range: -10000-20000-
- db: mixer
table:
key:
nodes: node1
type: default
`
cfg, err := config.ParseConfigData([]byte(s))
if err != nil {
println(err.Error())
panic(err)
}
var r *router.Router
r, err = router.NewRouter(cfg)
if err != nil {
println(err.Error())
panic(err)
}
return r.GetDBRules("mixer")
}