Return Grpc.Internal error once there's socker read timeout issue occurs in streaming subscribe under routing flap case #110
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qiluo-msft
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May 18, 2023
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sallylsy
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May 26, 2023
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Please rebase and add test coverage to unblock the merge. |
qiluo-msft
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**Why I did it** [Semgrep](https://github.com/returntocorp/semgrep) is a static analysis tool to find security vulnerabilities. When opening a PR or commtting to PR, Semgrep performs a diff-aware scanning, which scans changed files in PRs. When merging PR, Semgrep performs a full scan on master branch and report all findings. Ref: - [Supported Language](https://semgrep.dev/docs/supported-languages/#language-maturity) - [Semgrep Rules](https://registry.semgrep.dev/rule) **How I did it** Integrate Semgrep into this repository by committing a job configuration file
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Done. |
ganglyu
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Jun 28, 2023
| MockFail++ | ||
| fmt.Printf("mock sleep for redis timeout\n") | ||
| time.Sleep(30 * time.Second) | ||
| } |
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Can you use gomonkey to replace MockFail?
qiluo-msft
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Jun 30, 2023
| @@ -207,6 +208,10 @@ func (c *Client) Run(stream gnmipb.GNMI_SubscribeServer) (err error) { | |||
| c.Close() | |||
| // Wait until all child go routines exited | |||
| c.w.Wait() | |||
| if strings.Contains(err.Error(), "i/o timeout") { | |||
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Right, but seems this will require NOT small changes, like now we're using priorityQueue in all db_client which only stores error messages, refer
sonic-gnmi/sonic_data_client/db_client.go
Line 833 in 01fe667
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Can you add steps to reproduce issue in description? |
qiluo-msft
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Jul 11, 2023
| @@ -744,6 +745,12 @@ func tableData2Msi(tblPath *tablePath, useKey bool, op *string, msi *map[string] | |||
| return nil | |||
| } | |||
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| if MockFail == 1 { | |||
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Currently streaming telemetry subscribe will hit some error under routing flap case if it subscribes APPL_DB ROUTE_TABLE, this change will return explicit error code to client without any handling.
pubsub notification to avoid inconsistency introduced by other concurrent cmd
Why I did it
When there's DB table flapping happens, like APPL_DB ROUTE_Table, current gnmi server has some performance issue which will result in below error
"read unix @->/var/run/redis/redis.sock: i/o timeout"
We should need to fix this systemically. Now the fix is to return explicit error code as Internal error to client, and later we will do some optimization, and add some retry strategy into the redis function call.
How I did it
Return Grpc.Internal error to the client
How to verify it
verified via gnmi_cli, meanwhile some tests which introduces bgp flapping.
Which release branch to backport (provide reason below if selected)
Description for the changelog
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)