1 files changed, 48 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/terraform/plugin/discovery/get_cache.go b/vendor/github.com/hashicorp/terraform/plugin/discovery/get_cache.go
new file mode 100644
index 0000000..1a10042
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/plugin/discovery/get_cache.go
@@ -0,0 +1,48 @@
+package discovery
+
+// PluginCache is an interface implemented by objects that are able to maintain
+// a cache of plugins.
+type PluginCache interface {
+        // CachedPluginPath returns a path where the requested plugin is already
+        // cached, or an empty string if the requested plugin is not yet cached.
+        CachedPluginPath(kind string, name string, version Version) string
+
+        // InstallDir returns the directory that new plugins should be installed into
+        // in order to populate the cache. This directory should be used as the
+        // first argument to getter.Get when downloading plugins with go-getter.
+        //
+        // After installing into this directory, use CachedPluginPath to obtain the
+        // path where the plugin was installed.
+        InstallDir() string
+}
+
+// NewLocalPluginCache returns a PluginCache that caches plugins in a
+// given local directory.
+func NewLocalPluginCache(dir string) PluginCache {
+        return &pluginCache{
+                Dir: dir,
+        }
+}
+
+type pluginCache struct {
+        Dir string
+}
+
+func (c *pluginCache) CachedPluginPath(kind string, name string, version Version) string {
+        allPlugins := FindPlugins(kind, []string{c.Dir})
+        plugins := allPlugins.WithName(name).WithVersion(version)
+
+        if plugins.Count() == 0 {
+                // nothing cached
+                return ""
+        }
+
+        // There should generally be only one plugin here; if there's more than
+        // one match for some reason then we'll just choose one arbitrarily.
+        plugin := plugins.Newest()
+        return plugin.Path
+}
+
+func (c *pluginCache) InstallDir() string {
+        return c.Dir
+}