-
Notifications
You must be signed in to change notification settings - Fork 0
/
core.go
205 lines (164 loc) · 4.11 KB
/
core.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
package sqlmigrator
import (
"fmt"
"os"
"path"
"strconv"
"strings"
"time"
"github.com/adharshmk96/stk/consts"
"github.com/adharshmk96/stk/pkg/utils"
"github.com/spf13/viper"
)
const (
DEFAULT_LOG_FILE = ".commit-status"
)
type MigrationType string
const (
MigrationUp MigrationType = "up"
MigrationDown MigrationType = "down"
)
type Database string
const (
PostgresDB Database = "postgres"
MySQLDB Database = "mysql"
SQLiteDB Database = "sqlite"
)
type Migrations []*MigrationFileEntry
type MigrationFileEntry struct {
Number int
Name string
Committed bool
UpFilePath string
DownFilePath string
}
func ParseMigrationEntry(migrationEntry string) (*MigrationFileEntry, error) {
parts := strings.Split(migrationEntry, "_")
partLength := len(parts)
if partLength == 0 {
return nil, ErrInvalidMigration
}
commit_status := parts[partLength-1]
if commit_status != "up" && commit_status != "down" {
return nil, ErrInvalidMigration
}
name := strings.Join(parts[1:partLength-1], "_")
number, err := strconv.Atoi(parts[0])
if err != nil {
return nil, ErrInvalidMigration
}
rawMigration := &MigrationFileEntry{
Name: name,
Number: number,
Committed: commit_status == "up",
}
return rawMigration, nil
}
func (r *MigrationFileEntry) String() string {
m_String := fmt.Sprintf("%d", r.Number)
if r.Name != "" {
m_String = m_String + "_" + r.Name
}
return m_String
}
func (r *MigrationFileEntry) EntryString() string {
entryString := fmt.Sprintf("%d", r.Number)
if r.Name != "" {
entryString += "_" + r.Name
}
if r.Committed {
entryString += "_up"
} else {
entryString += "_down"
}
return entryString
}
func (r *MigrationFileEntry) FileNames(extention string) (string, string) {
fileName := fmt.Sprintf("%d", r.Number)
if r.Name != "" {
fileName += "_" + r.Name
}
upFileName := fileName + "_up." + extention
downFileName := fileName + "_down." + extention
return upFileName, downFileName
}
func (r *MigrationFileEntry) LoadFileContent() (string, string) {
upContent, err := os.ReadFile(r.UpFilePath)
if err != nil {
return "", ""
}
downContent, err := os.ReadFile(r.DownFilePath)
if err != nil {
return "", ""
}
return string(upContent), string(downContent)
}
type Context struct {
WorkDir string
LogFile string
Database Database
DryRun bool
Migrations Migrations
}
func DefaultContextConfig() (string, Database, string) {
rootDirectory := viper.GetString(consts.CONFIG_MIGRATOR_WORKDIR)
dbChoice := viper.GetString(consts.CONFIG_MIGRATOR_DB_TYPE)
logFile := utils.GetFirst(viper.GetString(consts.CONFIG_MIGRATOR_LOGFILE), DEFAULT_LOG_FILE)
dbType := SelectDatabase(dbChoice)
subDir := SelectSubDirectory(dbType)
workDir := path.Join(rootDirectory, subDir)
return workDir, dbType, logFile
}
func NewContext(workDir string, dbType Database, logFile string, dry bool) *Context {
ctx := &Context{
WorkDir: workDir,
Database: dbType,
LogFile: logFile,
DryRun: dry,
}
err := InitializeMigrationsFolder(ctx)
if err != nil {
return nil
}
return ctx
}
func (ctx *Context) LoadMigrationEntries() error {
migrations := []*MigrationFileEntry{}
entires, err := ReadLines(path.Join(ctx.WorkDir, ctx.LogFile))
if err != nil {
return err
}
for _, entry := range entires {
migration, err := ParseMigrationEntry(entry)
if err != nil {
return err
}
upFileName, downFileName := migration.FileNames(SelectExtention(ctx.Database))
migration.UpFilePath = path.Join(ctx.WorkDir, upFileName)
migration.DownFilePath = path.Join(ctx.WorkDir, downFileName)
migrations = append(migrations, migration)
}
ctx.Migrations = migrations
return nil
}
func (ctx *Context) WriteMigrationEntries() error {
filePath := path.Join(ctx.WorkDir, ctx.LogFile)
file, err := os.OpenFile(filePath, os.O_WRONLY|os.O_TRUNC, 0644)
if err != nil {
return err
}
defer file.Close()
for _, migration := range ctx.Migrations {
_, err := file.WriteString(migration.EntryString() + "\n")
if err != nil {
return err
}
}
return nil
}
type MigrationDBEntry struct {
Number int
Name string
Direction string
Created time.Time
}