Commit 0c52d7717588af263146a6fb62038f1e834a5e98
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make payload with provided data
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json_utility.go
| 1 | package webutility | 1 | package webutility |
| 2 | 2 | ||
| 3 | import ( | 3 | import ( |
| 4 | "encoding/json" | 4 | "encoding/json" |
| 5 | "errors" | 5 | "errors" |
| 6 | "io" | 6 | "io" |
| 7 | "net/http" | 7 | "net/http" |
| 8 | "sync" | 8 | "sync" |
| 9 | 9 | ||
| 10 | "gopkg.in/rana/ora.v4" | 10 | "gopkg.in/rana/ora.v4" |
| 11 | ) | 11 | ) |
| 12 | 12 | ||
| 13 | var mu = &sync.Mutex{} | 13 | var mu = &sync.Mutex{} |
| 14 | var payloads []payloadBuff | 14 | var payloads []payloadBuff |
| 15 | 15 | ||
| 16 | type LangMap map[string]map[string]string | 16 | type LangMap map[string]map[string]string |
| 17 | 17 | ||
| 18 | type Field struct { | 18 | type Field struct { |
| 19 | Parameter string `json:"param"` | 19 | Parameter string `json:"param"` |
| 20 | Type string `json:"type"` | 20 | Type string `json:"type"` |
| 21 | Visible bool `json:"visible"` | 21 | Visible bool `json:"visible"` |
| 22 | Editable bool `json:"editable"` | 22 | Editable bool `json:"editable"` |
| 23 | } | 23 | } |
| 24 | 24 | ||
| 25 | type CorrelationField struct { | 25 | type CorrelationField struct { |
| 26 | Result string `json:"result"` | 26 | Result string `json:"result"` |
| 27 | Elements []string `json:"elements"` | 27 | Elements []string `json:"elements"` |
| 28 | Type string `json:"type"` | 28 | Type string `json:"type"` |
| 29 | } | 29 | } |
| 30 | 30 | ||
| 31 | type Translation struct { | 31 | type Translation struct { |
| 32 | Language string `json:"language"` | 32 | Language string `json:"language"` |
| 33 | FieldsLabels map[string]string `json:"fieldsLabels"` | 33 | FieldsLabels map[string]string `json:"fieldsLabels"` |
| 34 | } | 34 | } |
| 35 | 35 | ||
| 36 | type payloadBuff struct { | 36 | type payloadBuff struct { |
| 37 | Type string `json:"tableType"` | 37 | Type string `json:"tableType"` |
| 38 | Method string `json:"method"` | 38 | Method string `json:"method"` |
| 39 | Params map[string]string `json:"params"` | 39 | Params map[string]string `json:"params"` |
| 40 | Lang []Translation `json:"lang"` | 40 | Lang []Translation `json:"lang"` |
| 41 | Fields []Field `json:"fields"` | 41 | Fields []Field `json:"fields"` |
| 42 | Correlations []CorrelationField `json:"correlationFields"` | 42 | Correlations []CorrelationField `json:"correlationFields"` |
| 43 | IdField string `json:"idField"` | 43 | IdField string `json:"idField"` |
| 44 | 44 | ||
| 45 | // Data can only hold slices of any type. It can't be used for itteration | 45 | // Data can only hold slices of any type. It can't be used for itteration |
| 46 | Data interface{} `json:"data"` | 46 | Data interface{} `json:"data"` |
| 47 | } | 47 | } |
| 48 | 48 | ||
| 49 | type Payload struct { | 49 | type Payload struct { |
| 50 | Method string `json:"method"` | 50 | Method string `json:"method"` |
| 51 | Params map[string]string `json:"params"` | 51 | Params map[string]string `json:"params"` |
| 52 | Lang []Translation `json:"lang"` | 52 | Lang []Translation `json:"lang"` |
| 53 | Fields []Field `json:"fields"` | 53 | Fields []Field `json:"fields"` |
| 54 | Correlations []CorrelationField `json:"correlationFields"` | 54 | Correlations []CorrelationField `json:"correlationFields"` |
| 55 | IdField string `json:"idField"` | 55 | IdField string `json:"idField"` |
| 56 | 56 | ||
| 57 | // Data contains JSON payload. | 57 | // Data contains JSON payload. |
| 58 | // It can't be used for itteration | 58 | // It can't be used for itteration |
| 59 | Data interface{} `json:"data"` | 59 | Data interface{} `json:"data"` |
| 60 | } | 60 | } |
| 61 | 61 | ||
| 62 | // InitTables loads all payloads in the payloads variable. | 62 | // InitTables loads all payloads in the payloads variable. |
| 63 | // Returns an error if it fails. | 63 | // Returns an error if it fails. |
| 64 | func InitTables(db *ora.Ses, project string) error { | 64 | func InitTables(db *ora.Ses, project string) error { |
| 65 | jsonbuf, err := fetchJSON(db, project) | 65 | jsonbuf, err := fetchJSON(db, project) |
| 66 | if err != nil { | 66 | if err != nil { |
| 67 | return err | 67 | return err |
| 68 | } | 68 | } |
| 69 | 69 | ||
| 70 | mu.Lock() | 70 | mu.Lock() |
| 71 | defer mu.Unlock() | 71 | defer mu.Unlock() |
| 72 | json.Unmarshal(jsonbuf, &payloads) | 72 | json.Unmarshal(jsonbuf, &payloads) |
| 73 | if len(payloads) == 0 { | 73 | if len(payloads) == 0 { |
| 74 | return errors.New("tables config is corrupt") | 74 | return errors.New("tables config is corrupt") |
| 75 | } | 75 | } |
| 76 | return nil | 76 | return nil |
| 77 | } | 77 | } |
| 78 | 78 | ||
| 79 | // ReloadTables reloads all payloads in the payloads variable. | 79 | // ReloadTables reloads all payloads in the payloads variable. |
| 80 | // Returns an error if it fails. | 80 | // Returns an error if it fails. |
| 81 | func ReloadTables(db *ora.Ses, project string) error { | 81 | func ReloadTables(db *ora.Ses, project string) error { |
| 82 | payloads = make([]payloadBuff, 0) | 82 | payloads = make([]payloadBuff, 0) |
| 83 | return InitTables(db, project) | 83 | return InitTables(db, project) |
| 84 | } | 84 | } |
| 85 | 85 | ||
| 86 | // DecodeJSON decodes JSON data from r to v. | 86 | // DecodeJSON decodes JSON data from r to v. |
| 87 | // Returns an error if it fails. | 87 | // Returns an error if it fails. |
| 88 | func DecodeJSON(r io.Reader, v interface{}) error { | 88 | func DecodeJSON(r io.Reader, v interface{}) error { |
| 89 | return json.NewDecoder(r).Decode(v) | 89 | return json.NewDecoder(r).Decode(v) |
| 90 | } | 90 | } |
| 91 | 91 | ||
| 92 | // NewPayload returs a payload sceleton for provided table. | 92 | // NewPayload returs a payload sceleton for provided table. |
| 93 | func NewPayload(r *http.Request, table string) Payload { | 93 | func NewPayload(r *http.Request, table string) Payload { |
| 94 | var pload Payload | 94 | var pload Payload |
| 95 | 95 | ||
| 96 | //pload.Method = r.Method + " " + r.URL.Path | 96 | //pload.Method = r.Method + " " + r.URL.Path |
| 97 | pload.Method = r.Method + " " + r.RequestURI | 97 | pload.Method = r.Method + " " + r.RequestURI |
| 98 | if table != "" { | 98 | if table != "" { |
| 99 | pload.Params = make(map[string]string, 0) | 99 | pload.Params = make(map[string]string, 0) |
| 100 | pload.Lang = translations(table) | 100 | pload.Lang = translations(table) |
| 101 | pload.Fields = fields(table) | 101 | pload.Fields = fields(table) |
| 102 | pload.IdField = id(table) | 102 | pload.IdField = id(table) |
| 103 | pload.Correlations = correlations(table) | 103 | pload.Correlations = correlations(table) |
| 104 | } | 104 | } |
| 105 | return pload | 105 | return pload |
| 106 | } | 106 | } |
| 107 | 107 | ||
| 108 | // MakePayload returs a payload for provided table with populated Data field. | ||
| 109 | func MakePayload(r *http.Request, table string, data interface{}) Payload { | ||
| 110 | var pload Payload | ||
| 111 | |||
| 112 | //pload.Method = r.Method + " " + r.URL.Path | ||
| 113 | pload.Method = r.Method + " " + r.RequestURI | ||
| 114 | if table != "" { | ||
| 115 | pload.Params = make(map[string]string, 0) | ||
| 116 | pload.Lang = translations(table) | ||
| 117 | pload.Fields = fields(table) | ||
| 118 | pload.IdField = id(table) | ||
| 119 | pload.Correlations = correlations(table) | ||
| 120 | } | ||
| 121 | pload.Data = data | ||
| 122 | return pload | ||
| 123 | } | ||
| 124 | |||
| 108 | // DeliverPayload encodes payload to w. | 125 | // DeliverPayload encodes payload to w. |
| 109 | func DeliverPayload(w http.ResponseWriter, payload Payload) { | 126 | func DeliverPayload(w http.ResponseWriter, payload Payload) { |
| 110 | json.NewEncoder(w).Encode(payload) | 127 | json.NewEncoder(w).Encode(payload) |
| 111 | payload.Data = nil | 128 | payload.Data = nil |
| 112 | } | 129 | } |
| 113 | 130 | ||
| 114 | // translations returns a slice of translations for a payload/table of ptype type. | 131 | // translations returns a slice of translations for a payload/table of ptype type. |
| 115 | func translations(ptype string) []Translation { | 132 | func translations(ptype string) []Translation { |
| 116 | var translations []Translation | 133 | var translations []Translation |
| 117 | 134 | ||
| 118 | for _, pload := range payloads { | 135 | for _, pload := range payloads { |
| 119 | if pload.Type == ptype { | 136 | if pload.Type == ptype { |
| 120 | for _, t := range pload.Lang { | 137 | for _, t := range pload.Lang { |
| 121 | translations = append(translations, Translation{ | 138 | translations = append(translations, Translation{ |
| 122 | Language: t.Language, | 139 | Language: t.Language, |
| 123 | FieldsLabels: t.FieldsLabels, | 140 | FieldsLabels: t.FieldsLabels, |
| 124 | }) | 141 | }) |
| 125 | } | 142 | } |
| 126 | } | 143 | } |
| 127 | } | 144 | } |
| 128 | 145 | ||
| 129 | return translations | 146 | return translations |
| 130 | } | 147 | } |
| 131 | 148 | ||
| 132 | // fields returns a slice of fields for a payload/table of ptype type. | 149 | // fields returns a slice of fields for a payload/table of ptype type. |
| 133 | func fields(ptype string) []Field { | 150 | func fields(ptype string) []Field { |
| 134 | var fields []Field | 151 | var fields []Field |
| 135 | 152 | ||
| 136 | for _, pload := range payloads { | 153 | for _, pload := range payloads { |
| 137 | if pload.Type == ptype { | 154 | if pload.Type == ptype { |
| 138 | for _, f := range pload.Fields { | 155 | for _, f := range pload.Fields { |
| 139 | fields = append(fields, f) | 156 | fields = append(fields, f) |
| 140 | } | 157 | } |
| 141 | } | 158 | } |
| 142 | } | 159 | } |
| 143 | 160 | ||
| 144 | return fields | 161 | return fields |
| 145 | } | 162 | } |
| 146 | 163 | ||
| 147 | // id returns the name of ID field of a payload/table of ptype type. | 164 | // id returns the name of ID field of a payload/table of ptype type. |
| 148 | func id(ptype string) string { | 165 | func id(ptype string) string { |
| 149 | for _, pload := range payloads { | 166 | for _, pload := range payloads { |
| 150 | if pload.Type == ptype { | 167 | if pload.Type == ptype { |
| 151 | return pload.IdField | 168 | return pload.IdField |
| 152 | } | 169 | } |
| 153 | } | 170 | } |
| 154 | return "" | 171 | return "" |
| 155 | } | 172 | } |
| 156 | 173 | ||
| 157 | // correlations returns a slice of correlation fields for a payload/table of ptype type. | 174 | // correlations returns a slice of correlation fields for a payload/table of ptype type. |
| 158 | func correlations(ptype string) []CorrelationField { | 175 | func correlations(ptype string) []CorrelationField { |
| 159 | var corr []CorrelationField | 176 | var corr []CorrelationField |
| 160 | 177 | ||
| 161 | for _, pload := range payloads { | 178 | for _, pload := range payloads { |
| 162 | if pload.Type == ptype { | 179 | if pload.Type == ptype { |
| 163 | for _, c := range pload.Correlations { | 180 | for _, c := range pload.Correlations { |
| 164 | corr = append(corr, c) | 181 | corr = append(corr, c) |
| 165 | } | 182 | } |
| 166 | } | 183 | } |
| 167 | } | 184 | } |
| 168 | 185 | ||
| 169 | return corr | 186 | return corr |
| 170 | } | 187 | } |
| 171 | 188 | ||
| 172 | // fetchJSON returns a byte slice of JSON configuration file from TABLES_CONFIG table. | 189 | // fetchJSON returns a byte slice of JSON configuration file from TABLES_CONFIG table. |
| 173 | // Returns an error if it fails. | 190 | // Returns an error if it fails. |
| 174 | func fetchJSON(db *ora.Ses, project string) ([]byte, error) { | 191 | func fetchJSON(db *ora.Ses, project string) ([]byte, error) { |
| 175 | db.SetCfg(db.Cfg().SetClob(ora.S)) | 192 | db.SetCfg(db.Cfg().SetClob(ora.S)) |
| 176 | stmt, err := db.Prep(`SELECT JSON_NCLOB FROM TABLES_CONFIG WHERE PROJEKAT`+EqualQuotes(project), ora.S) | 193 | stmt, err := db.Prep(`SELECT JSON_NCLOB FROM TABLES_CONFIG WHERE PROJEKAT`+EqualQuotes(project), ora.S) |
| 177 | defer stmt.Close() | 194 | defer stmt.Close() |
| 178 | if err != nil { | 195 | if err != nil { |
| 179 | return nil, err | 196 | return nil, err |
| 180 | } | 197 | } |
| 181 | 198 | ||
| 182 | rset, err := stmt.Qry() | 199 | rset, err := stmt.Qry() |
| 183 | if err != nil { | 200 | if err != nil { |
| 184 | return nil, err | 201 | return nil, err |
| 185 | } | 202 | } |
| 186 | 203 | ||
| 187 | var data string | 204 | var data string |
| 188 | if rset.Next() { | 205 | if rset.Next() { |
| 189 | data = rset.Row[0].(string) | 206 | data = rset.Row[0].(string) |
| 190 | } | 207 | } |
| 191 | 208 | ||
| 192 | //fmt.Println(data) | 209 | //fmt.Println(data) |
| 193 | return []byte(data), nil | 210 | return []byte(data), nil |
| 194 | } | 211 | } |
| 195 | 212 |