/
register.go
64 lines (56 loc) · 1.62 KB
/
register.go
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package pystate
import (
"fmt"
"gopkg.in/sensorbee/py.v0"
"gopkg.in/sensorbee/py.v0/mainthread"
"gopkg.in/sensorbee/sensorbee.v0/bql/udf"
"gopkg.in/sensorbee/sensorbee.v0/core"
"gopkg.in/sensorbee/sensorbee.v0/data"
"sync"
)
type defaultCreator struct {
baseParams *BaseParams
}
func (c *defaultCreator) CreateState(ctx *core.Context, params data.Map) (
core.SharedState, error) {
return New(c.baseParams, params)
}
// MustRegisterPyUDSCreator is like MustRegisterGlobalUDSCreator for Python
// instance, just an alias of pystate.
func MustRegisterPyUDSCreator(typeName string, modulePath string,
moduleName string, className string, writeMethodName string) {
udf.MustRegisterGlobalUDSCreator(typeName, &defaultCreator{
baseParams: &BaseParams{
ModulePath: modulePath,
ModuleName: moduleName,
ClassName: className,
WriteMethodName: writeMethodName,
},
})
}
type defaultFunc struct {
mdl py.ObjectModule
funcName string
mu sync.RWMutex
}
func (f *defaultFunc) Func(ctx *core.Context, args ...data.Value) (data.Value,
error) {
f.mu.Lock()
defer f.mu.Unlock()
return f.mdl.Call(f.funcName, args...)
}
// MustRegisterPyUDF is like MustRegisterGlobalUDF for Python module method.
func MustRegisterPyUDF(udfName string, modulePath string, moduleName string,
funcName string) {
mainthread.AppendSysPath(modulePath)
mdl, err := py.LoadModule(moduleName)
if err != nil {
panic(fmt.Errorf("py.MustRegisterPyUDF: cannot register '%v': %v",
udfName, err))
}
df := defaultFunc{
mdl: mdl,
funcName: funcName,
}
udf.MustRegisterGlobalUDF(udfName, udf.MustConvertGeneric(df.Func))
}