parent
78fdbaf186
commit
27a569609c
1 changed files with 12 additions and 2 deletions
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@ -209,8 +209,18 @@ func ViewPost(ctx *context_module.Context) {
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step := steps[cursor.Step]
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logLines := make([]*ViewStepLogLine, 0) // marshal to '[]' instead fo 'null' in json
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if c := cursor.Cursor; c < step.LogLength && c >= 0 {
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index := step.LogIndex + c
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index := step.LogIndex + cursor.Cursor
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validCursor := cursor.Cursor >= 0 &&
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// !(cursor.Cursor < step.LogLength) when the frontend tries to fetch next line before it's ready.
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// So return the same cursor and empty lines to let the frontend retry.
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cursor.Cursor < step.LogLength &&
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// !(index < task.LogIndexes[index]) when task data is older than step data.
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// It can be fixed by making sure write/read tasks and steps in the same transaction,
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// but it's easier to just treat it as fetching the next line before it's ready.
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index < int64(len(task.LogIndexes))
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if validCursor {
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length := step.LogLength - cursor.Cursor
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offset := task.LogIndexes[index]
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var err error
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