Carlos Florêncio
75 lines
2.2 KiB
Go
75 lines
2.2 KiB
Go
package queuesettings
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import (
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"fmt"
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"strconv"
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"strings"
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)
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// Resolve combines persisted settings with startup configuration and an
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// optional environment override. A malformed environment value is reported
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// but ignored so the configuration/persisted/default setting remains
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// effective. Environment takes precedence over startup configuration, which
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// takes precedence over the persisted setting.
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func Resolve(configured *Settings, environment Environment, startup ...Configuration) (Resolution, error) {
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settings := DefaultSettings()
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source := SourceDefault
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var configuration Configuration
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if len(startup) > 0 {
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configuration = startup[0]
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}
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if configuration.Present && configuration.Value < 0 {
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return Resolution{}, fmt.Errorf("%w: max_per_session must be zero or greater", ErrValidation)
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}
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if configured != nil {
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if err := Validate(*configured); err != nil {
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return Resolution{}, err
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}
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settings = *configured
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source = SourceSetting
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}
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resolution := Resolution{Response: Response{
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Settings: settings,
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Effective: Effective{
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MaxPerSession: settings.MaxPerSession,
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Source: source,
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MergeEnabled: settings.MergeEnabled,
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AutoMergeEnabled: settings.AutoMergeEnabled,
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},
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}}
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raw := strings.TrimSpace(environment.Value)
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if !environment.Present || raw == "" {
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return resolveConfiguration(resolution, configuration), nil
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}
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value, err := strconv.Atoi(raw)
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if err != nil {
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resolution.InvalidEnvironment = true
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return resolveConfiguration(resolution, configuration), nil
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}
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if value <= 0 {
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value = 0
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}
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resolution.Effective = Effective{
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MaxPerSession: value,
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Source: SourceEnvironment,
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Locked: true,
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MergeEnabled: settings.MergeEnabled,
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AutoMergeEnabled: settings.AutoMergeEnabled,
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}
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return resolution, nil
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}
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func resolveConfiguration(resolution Resolution, configuration Configuration) Resolution {
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if !configuration.Present {
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return resolution
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}
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resolution.Effective = Effective{
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MaxPerSession: configuration.Value,
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Source: SourceConfiguration,
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Locked: true,
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MergeEnabled: resolution.Settings.MergeEnabled,
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AutoMergeEnabled: resolution.Settings.AutoMergeEnabled,
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}
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return resolution
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}
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