super-graph/serv/config.go

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package serv
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import (
"regexp"
"strings"
"unicode"
"github.com/spf13/viper"
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)
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type config struct {
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AppName string `mapstructure:"app_name"`
Env string
HostPort string `mapstructure:"host_port"`
Host string
Port string
WebUI bool `mapstructure:"web_ui"`
LogLevel string `mapstructure:"log_level"`
EnableTracing bool `mapstructure:"enable_tracing"`
UseAllowList bool `mapstructure:"use_allow_list"`
WatchAndReload bool `mapstructure:"reload_on_config_change"`
AuthFailBlock string `mapstructure:"auth_fail_block"`
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SeedFile string `mapstructure:"seed_file"`
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MigrationsPath string `mapstructure:"migrations_path"`
Inflections map[string]string
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Auth struct {
Type string
Cookie string
CredsInHeader bool `mapstructure:"creds_in_header"`
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Rails struct {
Version string
SecretKeyBase string `mapstructure:"secret_key_base"`
URL string
Password string
MaxIdle int `mapstructure:"max_idle"`
MaxActive int `mapstructure:"max_active"`
Salt string
SignSalt string `mapstructure:"sign_salt"`
AuthSalt string `mapstructure:"auth_salt"`
}
JWT struct {
Provider string
Secret string
PubKeyFile string `mapstructure:"public_key_file"`
PubKeyType string `mapstructure:"public_key_type"`
}
}
DB struct {
Type string
Host string
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Port uint16
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DBName string
User string
Password string
Schema string
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PoolSize int32 `mapstructure:"pool_size"`
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MaxRetries int `mapstructure:"max_retries"`
LogLevel string `mapstructure:"log_level"`
Vars map[string]string `mapstructure:"variables"`
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Defaults struct {
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Filters []string
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Blocklist []string
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}
Tables []configTable
} `mapstructure:"database"`
Tables []configTable
RolesQuery string `mapstructure:"roles_query"`
Roles []configRole
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}
type configTable struct {
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Name string
Table string
Blocklist []string
Remotes []configRemote
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}
type configRemote struct {
Name string
ID string
Path string
URL string
Debug bool
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PassHeaders []string `mapstructure:"pass_headers"`
SetHeaders []struct {
Name string
Value string
} `mapstructure:"set_headers"`
}
type configRole struct {
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Name string
Match string
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Tables []struct {
Name string
Query struct {
Limit int
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Filters []string
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Columns []string
DisableAggregation bool `mapstructure:"disable_aggregation"`
Block bool
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}
Insert struct {
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Filters []string
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Columns []string
Set map[string]string
Block bool
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}
Update struct {
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Filters []string
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Columns []string
Set map[string]string
Block bool
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}
Delete struct {
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Filters []string
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Columns []string
Block bool
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}
}
}
func newConfig() *viper.Viper {
vi := viper.New()
vi.SetEnvPrefix("SG")
vi.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
vi.AutomaticEnv()
vi.AddConfigPath(confPath)
vi.AddConfigPath("./config")
vi.SetConfigName(getConfigName())
vi.SetDefault("host_port", "0.0.0.0:8080")
vi.SetDefault("web_ui", false)
vi.SetDefault("enable_tracing", false)
vi.SetDefault("auth_fail_block", "always")
vi.SetDefault("seed_file", "seed.js")
vi.SetDefault("database.type", "postgres")
vi.SetDefault("database.host", "localhost")
vi.SetDefault("database.port", 5432)
vi.SetDefault("database.user", "postgres")
vi.SetDefault("database.schema", "public")
vi.SetDefault("env", "development")
vi.BindEnv("env", "GO_ENV")
vi.BindEnv("HOST", "HOST")
vi.BindEnv("PORT", "PORT")
vi.SetDefault("auth.rails.max_idle", 80)
vi.SetDefault("auth.rails.max_active", 12000)
return vi
}
func (c *config) Validate() {
rm := make(map[string]struct{})
for i := range c.Roles {
name := strings.ToLower(c.Roles[i].Name)
if _, ok := rm[name]; ok {
logger.Fatal().Msgf("duplicate config for role '%s'", c.Roles[i].Name)
}
rm[name] = struct{}{}
}
tm := make(map[string]struct{})
for i := range c.Tables {
name := strings.ToLower(c.Tables[i].Name)
if _, ok := tm[name]; ok {
logger.Fatal().Msgf("duplicate config for table '%s'", c.Tables[i].Name)
}
tm[name] = struct{}{}
}
if len(c.RolesQuery) == 0 {
logger.Warn().Msgf("no 'roles_query' defined.")
}
}
func (c *config) getAliasMap() map[string][]string {
m := make(map[string][]string, len(c.Tables))
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for i := range c.Tables {
t := c.Tables[i]
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if len(t.Table) == 0 {
continue
}
k := strings.ToLower(t.Table)
m[k] = append(m[k], strings.ToLower(t.Name))
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}
return m
}
var varRe1 = regexp.MustCompile(`(?mi)\$([a-zA-Z0-9_.]+)`)
var varRe2 = regexp.MustCompile(`\{\{([a-zA-Z0-9_.]+)\}\}`)
func sanitize(s string) string {
s0 := varRe1.ReplaceAllString(s, `{{$1}}`)
s1 := strings.Map(func(r rune) rune {
if unicode.IsSpace(r) {
return ' '
}
return r
}, s0)
return varRe2.ReplaceAllStringFunc(s1, func(m string) string {
return strings.ToLower(m)
})
}