feat(codegen): rename "fields" to "codegen" for more meaningful naming
This commit is contained in:
Mateusz Filipowicz
committed by
Mateusz Filipowicz
Mateusz Filipowicz
parent
f396b2f712
commit
e629288cba
516
codegen/generator.go
Normal file
516
codegen/generator.go
Normal file
@@ -0,0 +1,516 @@
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package main
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import (
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"bytes"
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_ "embed"
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"encoding/json"
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"fmt"
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"go/format"
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"io"
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"os"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"text/template"
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"github.com/iancoleman/strcase"
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log "github.com/sirupsen/logrus"
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)
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type replacement struct {
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Old string
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New string
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}
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var fieldReps = []replacement{
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{"Dhcpdv6", "DHCPDV6"},
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{"Dhcpd", "DHCPD"},
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{"Idx", "IDX"},
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{"Ipsec", "IPSec"},
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{"Ipv6", "IPV6"},
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{"Openvpn", "OpenVPN"},
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{"Tftp", "TFTP"},
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{"Wlangroup", "WLANGroup"},
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{"Bc", "Broadcast"},
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{"Dhcp", "DHCP"},
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{"Dns", "DNS"},
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{"Dpi", "DPI"},
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{"Dtim", "DTIM"},
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{"Firewallgroup", "FirewallGroup"},
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{"Fixedip", "FixedIP"},
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{"Icmp", "ICMP"},
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{"Id", "ID"},
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{"Igmp", "IGMP"},
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{"Ip", "IP"},
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{"Leasetime", "LeaseTime"},
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{"Mac", "MAC"},
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{"Mcastenhance", "MulticastEnhance"},
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{"Minrssi", "MinRSSI"},
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{"Monthdays", "MonthDays"},
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{"Nat", "NAT"},
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{"Networkconf", "Network"},
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{"Networkgroup", "NetworkGroup"},
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{"Pd", "PD"},
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{"Pmf", "PMF"},
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{"Portconf", "PortProfile"},
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{"Qos", "QOS"},
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{"Radiusprofile", "RADIUSProfile"},
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{"Radius", "RADIUS"},
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{"Ssid", "SSID"},
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{"Startdate", "StartDate"},
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{"Starttime", "StartTime"},
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{"Stopdate", "StopDate"},
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{"Stoptime", "StopTime"},
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{"Tcp", "TCP"},
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{"Udp", "UDP"},
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{"Usergroup", "UserGroup"},
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{"Utc", "UTC"},
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{"Vlan", "VLAN"},
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{"Vpn", "VPN"},
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{"Wan", "WAN"},
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{"Wep", "WEP"},
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{"Wlan", "WLAN"},
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{"Wpa", "WPA"},
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}
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var fileReps = []replacement{
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{"WlanConf", "WLAN"},
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{"Dhcp", "DHCP"},
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{"Wlan", "WLAN"},
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{"NetworkConf", "Network"},
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{"PortConf", "PortProfile"},
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{"RadiusProfile", "RADIUSProfile"},
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{"ApGroups", "APGroup"},
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}
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type Resource struct {
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StructName string
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ResourcePath string
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Types map[string]*FieldInfo
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FieldProcessor func(name string, f *FieldInfo) error
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}
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type FieldInfo struct {
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FieldName string
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JSONName string
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FieldType string
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FieldValidation string
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OmitEmpty bool
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IsArray bool
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Fields map[string]*FieldInfo
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CustomUnmarshalType string
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CustomUnmarshalFunc string
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}
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func NewResource(structName string, resourcePath string) *Resource {
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baseType := NewFieldInfo(structName, resourcePath, "struct", "", false, false, "")
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resource := &Resource{
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StructName: structName,
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ResourcePath: resourcePath,
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Types: map[string]*FieldInfo{
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structName: baseType,
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},
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FieldProcessor: func(name string, f *FieldInfo) error { return nil },
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}
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// Since template files iterate through map keys in sorted order, these initial fields
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// are named such that they stay at the top for consistency. The spacer items create a
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// blank line in the resulting generated file.
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//
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// This hack is here for stability of the generated code, but can be removed if desired.
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baseType.Fields = map[string]*FieldInfo{
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" ID": NewFieldInfo("ID", "_id", "string", "", true, false, ""),
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" SiteID": NewFieldInfo("SiteID", "site_id", "string", "", true, false, ""),
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" _Spacer": nil,
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" Hidden": NewFieldInfo("Hidden", "attr_hidden", "bool", "", true, false, ""),
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" HiddenID": NewFieldInfo("HiddenID", "attr_hidden_id", "string", "", true, false, ""),
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" NoDelete": NewFieldInfo("NoDelete", "attr_no_delete", "bool", "", true, false, ""),
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" NoEdit": NewFieldInfo("NoEdit", "attr_no_edit", "bool", "", true, false, ""),
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" _Spacer": nil,
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" _Spacer": nil,
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}
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switch {
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case resource.IsSetting():
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resource.ResourcePath = strcase.ToSnake(strings.TrimPrefix(structName, "Setting"))
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baseType.Fields[" Key"] = NewFieldInfo("Key", "key", "string", "", false, false, "")
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if resource.StructName == "SettingUsg" {
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// Removed in v7, retaining for backwards compatibility
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baseType.Fields["MdnsEnabled"] = NewFieldInfo("MdnsEnabled", "mdns_enabled", "bool", "", false, false, "")
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}
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case resource.StructName == "Device":
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baseType.Fields[" MAC"] = NewFieldInfo("MAC", "mac", "string", "", true, false, "")
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baseType.Fields["Adopted"] = NewFieldInfo("Adopted", "adopted", "bool", "", false, false, "")
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baseType.Fields["Model"] = NewFieldInfo("Model", "model", "string", "", true, false, "")
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baseType.Fields["State"] = NewFieldInfo("State", "state", "DeviceState", "", false, false, "")
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baseType.Fields["Type"] = NewFieldInfo("Type", "type", "string", "", true, false, "")
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case resource.StructName == "User":
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baseType.Fields[" IP"] = NewFieldInfo("IP", "ip", "string", "non-generated field", true, false, "")
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baseType.Fields[" DevIdOverride"] = NewFieldInfo("DevIdOverride", "dev_id_override", "int", "non-generated field", true, false, "")
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case resource.StructName == "WLAN":
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// this field removed in v6, retaining for backwards compatibility
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baseType.Fields["WLANGroupID"] = NewFieldInfo("WLANGroupID", "wlangroup_id", "string", "", false, false, "")
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}
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return resource
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}
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func NewFieldInfo(fieldName string, jsonName string, fieldType string, fieldValidation string, omitempty bool, isArray bool, customUnmarshalType string) *FieldInfo {
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return &FieldInfo{
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FieldName: fieldName,
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JSONName: jsonName,
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FieldType: fieldType,
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FieldValidation: fieldValidation,
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OmitEmpty: omitempty,
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IsArray: isArray,
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CustomUnmarshalType: customUnmarshalType,
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}
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}
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func cleanName(name string, reps []replacement) string {
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for _, rep := range reps {
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name = strings.ReplaceAll(name, rep.Old, rep.New)
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}
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return name
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}
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func (r *Resource) IsSetting() bool {
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return strings.HasPrefix(r.StructName, "Setting")
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}
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func (r *Resource) processFields(fields map[string]interface{}) {
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t := r.Types[r.StructName]
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for name, validation := range fields {
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fieldInfo, err := r.fieldInfoFromValidation(name, validation)
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if err != nil {
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continue
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}
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t.Fields[fieldInfo.FieldName] = fieldInfo
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}
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}
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func (r *Resource) fieldInfoFromValidation(name string, validation interface{}) (*FieldInfo, error) {
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fieldName := strcase.ToCamel(name)
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fieldName = cleanName(fieldName, fieldReps)
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empty := &FieldInfo{}
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var fieldInfo *FieldInfo
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switch validation := validation.(type) {
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case []interface{}:
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if len(validation) == 0 {
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fieldInfo = NewFieldInfo(fieldName, name, "string", "", false, true, "")
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err := r.FieldProcessor(fieldName, fieldInfo)
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return fieldInfo, err
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}
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if len(validation) > 1 {
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return empty, fmt.Errorf("unknown validation %#v", validation)
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}
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fieldInfo, err := r.fieldInfoFromValidation(name, validation[0])
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if err != nil {
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return empty, err
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}
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fieldInfo.OmitEmpty = true
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fieldInfo.IsArray = true
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err = r.FieldProcessor(fieldName, fieldInfo)
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return fieldInfo, err
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case map[string]interface{}:
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typeName := r.StructName + fieldName
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result := NewFieldInfo(fieldName, name, typeName, "", true, false, "")
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result.Fields = make(map[string]*FieldInfo)
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for name, fv := range validation {
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child, err := r.fieldInfoFromValidation(name, fv)
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if err != nil {
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return empty, err
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}
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result.Fields[child.FieldName] = child
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}
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err := r.FieldProcessor(fieldName, result)
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r.Types[typeName] = result
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return result, err
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case string:
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fieldValidation := validation
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normalized := normalizeValidation(validation)
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omitEmpty := false
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switch {
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case normalized == "falsetrue" || normalized == "truefalse":
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fieldInfo = NewFieldInfo(fieldName, name, "bool", "", omitEmpty, false, "")
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return fieldInfo, r.FieldProcessor(fieldName, fieldInfo)
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default:
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if _, err := strconv.ParseFloat(normalized, 64); err == nil {
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if normalized == "09" || normalized == "09.09" {
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fieldValidation = ""
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}
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if strings.Contains(normalized, ".") {
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if strings.Contains(validation, "\\.){3}") {
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break
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}
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omitEmpty = true
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fieldInfo = NewFieldInfo(fieldName, name, "float64", fieldValidation, omitEmpty, false, "")
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return fieldInfo, r.FieldProcessor(fieldName, fieldInfo)
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}
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omitEmpty = true
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fieldInfo = NewFieldInfo(fieldName, name, "int", fieldValidation, omitEmpty, false, "")
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fieldInfo.CustomUnmarshalType = "emptyStringInt"
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return fieldInfo, r.FieldProcessor(fieldName, fieldInfo)
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}
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}
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if validation != "" && normalized != "" {
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log.Tracef("normalize %q to %q", validation, normalized)
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}
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omitEmpty = omitEmpty || (!strings.Contains(validation, "^$") && !strings.HasSuffix(fieldName, "ID"))
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fieldInfo = NewFieldInfo(fieldName, name, "string", fieldValidation, omitEmpty, false, "")
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return fieldInfo, r.FieldProcessor(fieldName, fieldInfo)
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}
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return empty, fmt.Errorf("unable to determine type from validation %q", validation)
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}
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func (r *Resource) processJSON(b []byte) error {
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var fields map[string]interface{}
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err := json.Unmarshal(b, &fields)
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if err != nil {
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return err
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}
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r.processFields(fields)
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return nil
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}
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//go:embed api.go.tmpl
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var apiGoTemplate string
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func (r *Resource) generateCode() (string, error) {
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var err error
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var buf bytes.Buffer
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writer := io.Writer(&buf)
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tpl := template.Must(template.New("api.go.tmpl").Parse(apiGoTemplate))
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err = tpl.Execute(writer, r)
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if err != nil {
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return "", fmt.Errorf("failed to render template: %w", err)
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}
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src, err := format.Source(buf.Bytes())
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if err != nil {
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return "", fmt.Errorf("failed to format source: %w", err)
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}
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return string(src), err
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}
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func normalizeValidation(re string) string {
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re = strings.ReplaceAll(re, "\\d", "[0-9]")
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re = strings.ReplaceAll(re, "[-+]?", "")
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re = strings.ReplaceAll(re, "[+-]?", "")
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re = strings.ReplaceAll(re, "[-]?", "")
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re = strings.ReplaceAll(re, "\\.", ".")
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re = strings.ReplaceAll(re, "[.]?", ".")
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quants := regexp.MustCompile(`\{\d*,?\d*\}|\*|\+|\?`)
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re = quants.ReplaceAllString(re, "")
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control := regexp.MustCompile(`[\(\[\]\)\|\-\$\^]`)
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re = control.ReplaceAllString(re, "")
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re = strings.TrimPrefix(re, "^")
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re = strings.TrimSuffix(re, "$")
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return re
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}
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func generateCode(fieldsDir string, outDir string) error {
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fieldsFiles, err := os.ReadDir(fieldsDir)
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if err != nil {
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return fmt.Errorf("unable to read fields directory %s: %w", fieldsDir, err)
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}
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for _, fieldsFile := range fieldsFiles {
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name := fieldsFile.Name()
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ext := filepath.Ext(name)
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switch name {
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case "AuthenticationRequest.json", "Setting.json", "Wall.json":
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continue
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}
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if filepath.Ext(name) != ".json" {
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continue
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}
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log.Debugf("Processing %s...", fieldsFile.Name())
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name = name[:len(name)-len(ext)]
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urlPath := strings.ToLower(name)
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structName := cleanName(name, fileReps)
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goFile := strcase.ToSnake(structName) + ".generated.go"
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fieldsFilePath := filepath.Join(fieldsDir, fieldsFile.Name())
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b, err := os.ReadFile(fieldsFilePath)
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if err != nil {
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log.Warnf("skipping file %s: %s", fieldsFile.Name(), err)
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continue
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}
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resource := NewResource(structName, urlPath)
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switch resource.StructName {
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case "Account":
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resource.FieldProcessor = func(name string, f *FieldInfo) error {
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switch name {
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case "IP", "NetworkID":
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f.OmitEmpty = true
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}
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return nil
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}
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case "ChannelPlan":
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resource.FieldProcessor = func(name string, f *FieldInfo) error {
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switch name {
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case "Channel", "BackupChannel", "TxPower":
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if f.FieldType == "string" {
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f.CustomUnmarshalType = "numberOrString"
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}
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}
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return nil
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}
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case "Device":
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resource.FieldProcessor = func(name string, f *FieldInfo) error {
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switch name {
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case "X", "Y":
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f.FieldType = "float64"
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case "StpPriority":
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f.FieldType = "string"
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f.CustomUnmarshalType = "numberOrString"
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case "Ht":
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f.FieldType = "int"
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case "Channel", "BackupChannel", "TxPower":
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if f.FieldType == "string" {
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f.CustomUnmarshalType = "numberOrString"
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}
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case "LteExtAnt", "LtePoe":
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f.CustomUnmarshalType = "booleanishString"
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}
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f.OmitEmpty = true
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switch name {
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case "PortOverrides":
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f.OmitEmpty = false
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}
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return nil
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}
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case "Network":
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resource.FieldProcessor = func(name string, f *FieldInfo) error {
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switch name {
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case "InternetAccessEnabled", "IntraNetworkAccessEnabled":
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if f.FieldType == "bool" {
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f.CustomUnmarshalType = "*bool"
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f.CustomUnmarshalFunc = "emptyBoolToTrue"
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}
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case "WANUsername", "XWANPassword":
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f.OmitEmpty = true
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}
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return nil
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}
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case "SettingGlobalAp":
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resource.FieldProcessor = func(name string, f *FieldInfo) error {
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if strings.HasPrefix(name, "6E") {
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f.FieldName = strings.Replace(f.FieldName, "6E", "SixE", 1)
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}
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return nil
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}
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case "SettingMgmt":
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sshKeyField := NewFieldInfo(resource.StructName+"XSshKeys", "x_ssh_keys", "struct", "", false, false, "")
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sshKeyField.Fields = map[string]*FieldInfo{
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"name": NewFieldInfo("Name", "name", "string", "", false, false, ""),
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"keyType": NewFieldInfo("KeyType", "type", "string", "", false, false, ""),
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"key": NewFieldInfo("Key", "key", "string", "", false, false, ""),
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"comment": NewFieldInfo("Comment", "comment", "string", "", false, false, ""),
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"date": NewFieldInfo("Date", "date", "string", "", false, false, ""),
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"fingerprint": NewFieldInfo("Fingerprint", "fingerprint", "string", "", false, false, ""),
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}
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resource.Types[sshKeyField.FieldName] = sshKeyField
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resource.FieldProcessor = func(name string, f *FieldInfo) error {
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if name == "XSshKeys" {
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f.FieldType = sshKeyField.FieldName
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}
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return nil
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}
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case "SettingUsg":
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resource.FieldProcessor = func(name string, f *FieldInfo) error {
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if strings.HasSuffix(name, "Timeout") && name != "ArpCacheTimeout" {
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f.FieldType = "int"
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f.CustomUnmarshalType = "emptyStringInt"
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}
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return nil
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}
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case "User":
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resource.FieldProcessor = func(name string, f *FieldInfo) error {
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switch name {
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case "Blocked":
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f.FieldType = "bool"
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case "LastSeen":
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f.FieldType = "int"
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f.CustomUnmarshalType = "emptyStringInt"
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}
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return nil
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}
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case "WLAN":
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resource.FieldProcessor = func(name string, f *FieldInfo) error {
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switch name {
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case "ScheduleWithDuration":
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||||
// always send schedule, so we can empty it if we want to
|
||||
f.OmitEmpty = false
|
||||
}
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
err = resource.processJSON(b)
|
||||
if err != nil {
|
||||
log.Warnf("skipping file %s: %s", fieldsFile.Name(), err)
|
||||
continue
|
||||
}
|
||||
|
||||
var code string
|
||||
if code, err = resource.generateCode(); err != nil {
|
||||
log.Errorf("failed to generate code for %s: %s", fieldsFile.Name(), err)
|
||||
continue
|
||||
}
|
||||
|
||||
goFilePath := filepath.Join(outDir, goFile)
|
||||
_ = os.Remove(goFilePath)
|
||||
if err := os.WriteFile(goFile, ([]byte)(code), 0o644); err != nil {
|
||||
log.Errorf("failed to write file %s: %s", goFile, err)
|
||||
continue
|
||||
}
|
||||
log.Debugf("Generated %s with resource %s\n\n", goFile, structName)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
Reference in New Issue
Block a user