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gateway: tolerate `Solve` being called with no `creq.Definition` 

Avoids panicing when accessing `creq.Definition.Metadata`.

Signed-off-by: Ian Campbell <ijc@docker.com>
docker-18.09
Ian Campbell 2018-08-08 12:16:47 +01:00
parent 3f5276b3c4
commit 13f53d5753
1 changed files with 6 additions and 4 deletions
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10
frontend/gateway/grpcclient/client.go
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@ -244,10 +244,12 @@ func (c *grpcClient) requestForRef(ref client.Reference) (*pb.SolveRequest, erro
}
func (c *grpcClient) Solve(ctx context.Context, creq client.SolveRequest) (*client.Result, error) {
for _, md := range creq.Definition.Metadata {
for cap := range md.Caps {
if err := c.llbCaps.Supports(cap); err != nil {
return nil, err
if creq.Definition != nil {
for _, md := range creq.Definition.Metadata {
for cap := range md.Caps {
if err := c.llbCaps.Supports(cap); err != nil {
return nil, err
}
}
}
}