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environment.go
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environment.go
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package pp_ioc
import (
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
logCtx "github.com/wlad031/pp-logging"
ps "github.com/wlad031/pp-properties/property_source"
)
type Environment interface {
addPropertySource(b *bean) error
GetProperty(key string) (string, error)
GetPropertyOrDefault(key string, defaultValue string) string
GetAllProperties() map[string]string
}
func newEnvironment() Environment {
return &environmentImpl{
logger: logCtx.Get("IOC.Environment"),
propertySources: []ps.PropertySource{},
}
}
type environmentImpl struct {
logger logCtx.NamedLogger
propertySources []ps.PropertySource
}
func (env *environmentImpl) addPropertySource(b *bean) error {
propertySource := b.instance.(ps.PropertySource)
env.propertySources = append(env.propertySources, propertySource)
env.logger.WithFields(log.Fields{
"beanDef": b.definition.shortString(),
}).Info("Property source added")
return nil
}
func (env *environmentImpl) GetProperty(key string) (string, error) {
var res string
for _, propertySource := range env.propertySources {
if v, e := propertySource.Get(key); e == nil {
res = v
}
}
if res == "" {
return "", errors.New("Cannot find property " + key)
} else {
return res, nil
}
}
func (env *environmentImpl) GetPropertyOrDefault(key string, defaultValue string) string {
if v, e := env.GetProperty(key); e != nil {
return defaultValue
} else {
return v
}
}
func (env *environmentImpl) GetAllProperties() map[string]string {
res := map[string]string{}
for _, propertySource := range env.propertySources {
allProps := propertySource.GetAll()
for k, v := range allProps {
res[k] = v
}
}
return res
}