fix: don't panic for some errors in modelstate #42
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Signed-off-by: Travis Johnson <tsjohnso@us.ibm.com>
Signed-off-by: Travis Johnson <tsjohnso@us.ibm.com>
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Jooho
referenced
this pull request
in Jooho/modelmesh-runtime-adapter
May 1, 2023
… - bug fixes Signed-off-by: jooho <jlee@redhat.com>
Jooho
referenced
this pull request
in red-hat-data-services/modelmesh-runtime-adapter
May 16, 2023
#### Motivation
If a model load timeout is hit a panic is generated in the modelStateManager:
```
panic: interface conversion: interface {} is nil, not *mmesh.LoadModelResponse
goroutine 1397 [running]:
github.com/kserve/modelmesh-runtime-adapter/model-serving-puller/server.(*modelStateManager).loadModel(...)
/opt/app-root/src/model-serving-puller/server/modelstate.go:107
github.com/kserve/modelmesh-runtime-adapter/model-serving-puller/server.(*PullerServer).LoadModel(0xc00016c550, {0x12df4f8, 0xc0005fc960}, 0x485800)
/opt/app-root/src/model-serving-puller/server/server.go:116 +0xad
github.com/kserve/modelmesh-runtime-adapter/internal/proto/mmesh._ModelRuntime_LoadModel_Handler({0x10219e0, 0xc00016c550}, {0x12df4f8, 0xc0005fc960}, 0xc0004602a0, 0x0)
/opt/app-root/src/internal/proto/mmesh/model-runtime_grpc.pb.go:181 +0x170
google.golang.org/grpc.(*Server).processUnaryRPC(0xc00054a1c0, {0x12f37d0, 0xc0006ca4e0}, 0xc000b326c0, 0xc00027daa0, 0x1a6f780, 0x0)
/remote-source/deps/gomod/pkg/mod/google.golang.org/grpc@v1.49.0/server.go:1301 +0xb03
google.golang.org/grpc.(*Server).handleStream(0xc00054a1c0, {0x12f37d0, 0xc0006ca4e0}, 0xc000b326c0, 0x0)
/remote-source/deps/gomod/pkg/mod/google.golang.org/grpc@v1.49.0/server.go:1642 +0xa2a
google.golang.org/grpc.(*Server).serveStreams.func1.2()
/remote-source/deps/gomod/pkg/mod/google.golang.org/grpc@v1.49.0/server.go:938 +0x98
created by google.golang.org/grpc.(*Server).serveStreams.func1
/remote-source/deps/gomod/pkg/mod/google.golang.org/grpc@v1.49.0/server.go:936 +0x294
```
In a couple of error cases in `submitRequest`, `nil` is returned as the first return value with the error. The code in `loadModel` and `unloadModel` always attempts to cast the value to a pointer to a response, but this will panic if attempting to convert `nil`.
#### Modifications
- add a test to reproduce the panic
- change the code to use a comma-ok type assertion instead of panicking
#### Result
The puller/adapter doesn't crash when a model load times out.
Signed-off-by: Travis Johnson <tsjohnso@us.ibm.com>
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Motivation
If a model load timeout is hit a panic is generated in the modelStateManager:
In a couple of error cases in
submitRequest,nilis returned as the first return value with the error. The code inloadModelandunloadModelalways attempts to cast the value to a pointer to a response, but this will panic if attempting to convertnil.Modifications
Result
The puller/adapter doesn't crash when a model load times out.