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Import modifying runtime abstraction from experimental runtime

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This change imports the modifying runtime abstraction from the
experimental branch. This encapsulates the checks for whether
modification is required, and forwards the loaded spec to
the specified modifier. This allows for the same code to be
reused when performing more complex modifications.

Signed-off-by: Evan Lezar <elezar@nvidia.com>
This commit is contained in:
Evan Lezar
2022-01-31 15:11:36 +01:00
parent bf8c3bab72
commit 4177fddcc4
15 changed files with 584 additions and 388 deletions
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11
internal/oci/runtime_low_level.go
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@@ -25,19 +25,14 @@ import (
// NewLowLevelRuntime creates a Runtime that wraps a low-level runtime executable.
// The executable specified is taken from the list of supplied candidates, with the first match
// present in the PATH being selected.
func NewLowLevelRuntime(candidates ...string) (Runtime, error) {
return NewLowLevelRuntimeWithLogger(log.StandardLogger(), candidates...)
}
// NewLowLevelRuntimeWithLogger creates a Runtime as with NewLowLevelRuntime using the specified logger.
func NewLowLevelRuntimeWithLogger(logger *log.Logger, candidates ...string) (Runtime, error) {
// present in the PATH being selected. A logger is also specified.
func NewLowLevelRuntime(logger *log.Logger, candidates []string) (Runtime, error) {
runtimePath, err := findRuntime(logger, candidates)
if err != nil {
return nil, fmt.Errorf("error locating runtime: %v", err)
}
return NewRuntimeForPathWithLogger(logger, runtimePath)
return NewRuntimeForPath(logger, runtimePath)
}
// findRuntime checks elements in a list of supplied candidates for a matching executable in the PATH.