64 lines
2.2 KiB
Go
64 lines
2.2 KiB
Go
package loader
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import plugin "github.com/hashicorp/go-plugin"
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// PluginInstance wraps an instance of a plugin. If the plugin is external, it
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// provides methods to retrieve the ReattachConfig and to kill the plugin.
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type PluginInstance interface {
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// Internal returns if the plugin is internal
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Internal() bool
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// Kill kills the plugin if it is external. It is safe to call on internal
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// plugins.
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Kill()
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// ReattachConfig returns the ReattachConfig and whether the plugin is internal
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// or not. If the second return value is false, no ReattachConfig is
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// possible to return.
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ReattachConfig() (config *plugin.ReattachConfig, canReattach bool)
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// Plugin returns the wrapped plugin instance.
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Plugin() interface{}
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// Exited returns whether the plugin has exited
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Exited() bool
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// ApiVersion returns the API version to be used with the plugin
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ApiVersion() string
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}
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// internalPluginInstance wraps an internal plugin
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type internalPluginInstance struct {
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instance interface{}
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apiVersion string
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killFn func()
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}
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func (p *internalPluginInstance) Internal() bool { return true }
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func (p *internalPluginInstance) Kill() { p.killFn() }
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func (p *internalPluginInstance) ReattachConfig() (*plugin.ReattachConfig, bool) { return nil, false }
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func (p *internalPluginInstance) Plugin() interface{} { return p.instance }
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func (p *internalPluginInstance) Exited() bool { return false }
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func (p *internalPluginInstance) ApiVersion() string { return p.apiVersion }
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// externalPluginInstance wraps an external plugin
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type externalPluginInstance struct {
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client *plugin.Client
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instance interface{}
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apiVersion string
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}
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func (p *externalPluginInstance) Internal() bool { return false }
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func (p *externalPluginInstance) Plugin() interface{} { return p.instance }
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func (p *externalPluginInstance) Exited() bool { return p.client.Exited() }
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func (p *externalPluginInstance) ApiVersion() string { return p.apiVersion }
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func (p *externalPluginInstance) ReattachConfig() (*plugin.ReattachConfig, bool) {
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return p.client.ReattachConfig(), true
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}
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func (p *externalPluginInstance) Kill() {
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p.client.Kill()
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}
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