/
builder.go
211 lines (182 loc) · 5.72 KB
/
builder.go
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package internalstorage
import (
"fmt"
"strings"
"gorm.io/gorm"
"gorm.io/gorm/clause"
"k8s.io/apimachinery/pkg/runtime/schema"
)
type JSONQueryExpression struct {
column string
keys []string
not bool
values []string
}
func JSONQuery(column string, keys ...string) *JSONQueryExpression {
return &JSONQueryExpression{column: column, keys: keys}
}
func (jsonQuery *JSONQueryExpression) Exist() *JSONQueryExpression {
jsonQuery.not = false
return jsonQuery
}
func (jsonQuery *JSONQueryExpression) NotExist() *JSONQueryExpression {
jsonQuery.not = true
return jsonQuery
}
func (jsonQuery *JSONQueryExpression) Equal(value string) *JSONQueryExpression {
jsonQuery.not, jsonQuery.values = false, []string{value}
return jsonQuery
}
func (jsonQuery *JSONQueryExpression) NotEqual(value string) *JSONQueryExpression {
jsonQuery.not, jsonQuery.values = true, []string{value}
return jsonQuery
}
func (jsonQuery *JSONQueryExpression) In(values ...string) *JSONQueryExpression {
jsonQuery.not, jsonQuery.values = false, values
return jsonQuery
}
func (jsonQuery *JSONQueryExpression) NotIn(values ...string) *JSONQueryExpression {
jsonQuery.not, jsonQuery.values = true, values
return jsonQuery
}
func (jsonQuery *JSONQueryExpression) writeJSONKey(builder clause.Builder) {
writeString(builder, "JSON_EXTRACT(")
builder.WriteQuoted(jsonQuery.column)
writeString(builder, ",")
builder.AddVar(builder, fmt.Sprintf(`$."%s"`, strings.Join(jsonQuery.keys, `"."`)))
writeString(builder, ")")
}
func (jsonQuery *JSONQueryExpression) writePostgresJSONKey(builder clause.Builder) {
builder.WriteQuoted(jsonQuery.column)
for _, key := range jsonQuery.keys[0 : len(jsonQuery.keys)-1] {
writeString(builder, " -> ")
builder.AddVar(builder, key)
}
writeString(builder, " ->> ")
builder.AddVar(builder, jsonQuery.keys[len(jsonQuery.keys)-1])
}
func (jsonQuery *JSONQueryExpression) writeJSONKeyWithJSON_UNQUOTE(builder clause.Builder) {
writeString(builder, "JSON_UNQUOTE(")
jsonQuery.writeJSONKey(builder)
writeString(builder, ")")
}
func (jsonQuery *JSONQueryExpression) writeJSONKeyWithCAST_TO_TEXT(builder clause.Builder) {
writeString(builder, "CAST(")
jsonQuery.writeJSONKey(builder)
writeString(builder, " as TEXT)")
}
func (jsonQuery *JSONQueryExpression) Build(builder clause.Builder) {
if len(jsonQuery.keys) == 0 {
return
}
if stmt, ok := builder.(*gorm.Statement); ok {
dialector := stmt.Dialector.Name()
switch dialector {
case "mysql", "sqlite3", "sqlite":
if jsonQuery.not && len(jsonQuery.values) != 0 {
writeString(builder, "(")
defer func() {
writeString(builder, ")")
}()
jsonQuery.writeJSONKey(builder)
writeString(builder, " IS NULL")
writeString(builder, " OR ")
}
if dialector == "mysql" {
// Wrap`JSON_UNQUOTE` function to convert all json results to strings.
// https://github.com/clusterpedia-io/clusterpedia/pull/62
jsonQuery.writeJSONKeyWithJSON_UNQUOTE(builder)
} else {
// Wrap`CAST as TEXT` function to convert all json results to strings.
jsonQuery.writeJSONKeyWithCAST_TO_TEXT(builder)
}
switch len(jsonQuery.values) {
case 0:
if jsonQuery.not {
writeString(builder, " IS NULL")
} else {
writeString(builder, " IS NOT NULL")
}
case 1:
if jsonQuery.not {
writeString(builder, " != ")
} else {
writeString(builder, " = ")
}
builder.AddVar(builder, jsonQuery.values[0])
default:
if jsonQuery.not {
writeString(builder, " NOT IN ")
} else {
writeString(builder, " IN ")
}
builder.AddVar(builder, jsonQuery.values)
}
case "postgres":
if jsonQuery.not && len(jsonQuery.values) != 0 {
writeString(builder, "(")
defer func() {
writeString(builder, ")")
}()
jsonQuery.writePostgresJSONKey(builder)
writeString(builder, " IS NULL")
writeString(builder, " OR ")
}
jsonQuery.writePostgresJSONKey(builder)
switch len(jsonQuery.values) {
case 0:
if jsonQuery.not {
writeString(builder, " IS NULL")
} else {
writeString(builder, " IS NOT NULL")
}
case 1:
if jsonQuery.not {
writeString(builder, " != ")
} else {
writeString(builder, " = ")
}
builder.AddVar(builder, jsonQuery.values[0])
default:
if jsonQuery.not {
writeString(builder, " NOT IN ")
} else {
writeString(builder, " IN ")
}
builder.AddVar(builder, jsonQuery.values)
}
}
}
}
func writeString(builder clause.Writer, str string) {
_, _ = builder.WriteString(str)
}
func buildOwnerQueryByUID(db *gorm.DB, cluster, uid string, seniority int) interface{} {
if seniority == 0 {
return uid
}
parentOwner := buildOwnerQueryByUID(db, cluster, uid, seniority-1)
ownerQuery := db.Model(Resource{}).Select("uid").Where(map[string]interface{}{"cluster": cluster})
if _, ok := parentOwner.(string); ok {
return ownerQuery.Where("owner_uid = ?", parentOwner)
}
return ownerQuery.Where("owner_uid IN (?)", parentOwner)
}
func buildOwnerQueryByName(db *gorm.DB, cluster string, namespaces []string, groupResource schema.GroupResource, name string, seniority int) interface{} {
ownerQuery := db.Model(Resource{}).Select("uid").Where(map[string]interface{}{"cluster": cluster})
if seniority != 0 {
parentOwner := buildOwnerQueryByName(db, cluster, namespaces, groupResource, name, seniority-1)
return ownerQuery.Where("owner_uid IN (?)", parentOwner)
}
if !groupResource.Empty() {
ownerQuery = ownerQuery.Where(map[string]interface{}{"group": groupResource.Group, "resource": groupResource.Resource})
}
switch len(namespaces) {
case 0:
case 1:
ownerQuery = ownerQuery.Where("namespace = ?", namespaces[0])
default:
ownerQuery = ownerQuery.Where("namespace IN (?)", namespaces)
}
return ownerQuery.Where("name = ?", name)
}