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Merge pull request #23 from blocklayerhq/fix-10-cherrypick

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Fix race condition in cueflow. Fixes #10.
This commit is contained in:
Andrea Luzzardi 2021-01-13 14:42:56 -08:00 committed by GitHub
commit bbdd2b394a
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 0 deletions
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8
dagger/env.go
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@ -3,6 +3,7 @@ package dagger
import (
"context"
"os"
"sync"
"cuelang.org/go/cue"
cueflow "cuelang.org/go/tools/flow"
@ -104,6 +105,7 @@ type EnvWalkFunc func(*Component, Fillable) error
func (env *Env) Walk(ctx context.Context, fn EnvWalkFunc) (*Value, error) {
debugf("Env.Walk")
defer debugf("COMPLETE: Env.Walk")
l := sync.Mutex{}
// Cueflow cue instance
// FIXME: make this cleaner in *Value by keeping intermediary instances
flowInst, err := env.base.CueInst().Fill(env.input.CueInst().Value())
@ -119,6 +121,8 @@ func (env *Env) Walk(ctx context.Context, fn EnvWalkFunc) (*Value, error) {
// Cueflow config
flowCfg := &cueflow.Config{
UpdateFunc: func(c *cueflow.Controller, t *cueflow.Task) error {
l.Lock()
defer l.Unlock()
debugf("compute step")
if t == nil {
return nil
@ -141,6 +145,8 @@ func (env *Env) Walk(ctx context.Context, fn EnvWalkFunc) (*Value, error) {
}
// Cueflow match func
flowMatchFn := func(v cue.Value) (cueflow.Runner, error) {
l.Lock()
defer l.Unlock()
debugf("Env.Walk: processing %s", v.Path().String())
val := env.cc.Wrap(v, flowInst)
c, err := val.Component()
@ -152,6 +158,8 @@ func (env *Env) Walk(ctx context.Context, fn EnvWalkFunc) (*Value, error) {
return nil, err
}
return cueflow.RunnerFunc(func(t *cueflow.Task) error {
l.Lock()
defer l.Unlock()
return fn(c, t)
}), nil
}