76 lines
2.6 KiB
Go
76 lines
2.6 KiB
Go
package plugin
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import (
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"github.com/hashicorp/go-plugin"
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proto "github.com/hashicorp/terraform/internal/tfplugin5"
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)
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const (
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// The constants below are the names of the plugins that can be dispensed
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// from the plugin server.
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ProviderPluginName = "provider"
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ProvisionerPluginName = "provisioner"
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// DefaultProtocolVersion is the protocol version assumed for legacy clients that don't specify
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// a particular version during their handshake. This is the version used when Terraform 0.10
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// and 0.11 launch plugins that were built with support for both versions 4 and 5, and must
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// stay unchanged at 4 until we intentionally build plugins that are not compatible with 0.10 and
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// 0.11.
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DefaultProtocolVersion = 4
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)
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// Handshake is the HandshakeConfig used to configure clients and servers.
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var Handshake = plugin.HandshakeConfig{
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// The ProtocolVersion is the version that must match between TF core
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// and TF plugins. This should be bumped whenever a change happens in
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// one or the other that makes it so that they can't safely communicate.
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// This could be adding a new interface value, it could be how
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// helper/schema computes diffs, etc.
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ProtocolVersion: DefaultProtocolVersion,
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// The magic cookie values should NEVER be changed.
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MagicCookieKey: "TF_PLUGIN_MAGIC_COOKIE",
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MagicCookieValue: "d602bf8f470bc67ca7faa0386276bbdd4330efaf76d1a219cb4d6991ca9872b2",
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}
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type GRPCProviderFunc func() proto.ProviderServer
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type GRPCProvisionerFunc func() proto.ProvisionerServer
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// ServeOpts are the configurations to serve a plugin.
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type ServeOpts struct {
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// Wrapped versions of the above plugins will automatically shimmed and
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// added to the GRPC functions when possible.
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GRPCProviderFunc GRPCProviderFunc
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GRPCProvisionerFunc GRPCProvisionerFunc
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}
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// Serve serves a plugin. This function never returns and should be the final
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// function called in the main function of the plugin.
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func Serve(opts *ServeOpts) {
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plugin.Serve(&plugin.ServeConfig{
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HandshakeConfig: Handshake,
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VersionedPlugins: pluginSet(opts),
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GRPCServer: plugin.DefaultGRPCServer,
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})
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}
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func pluginSet(opts *ServeOpts) map[int]plugin.PluginSet {
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plugins := map[int]plugin.PluginSet{}
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// add the new protocol versions if they're configured
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if opts.GRPCProviderFunc != nil || opts.GRPCProvisionerFunc != nil {
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plugins[5] = plugin.PluginSet{}
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if opts.GRPCProviderFunc != nil {
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plugins[5]["provider"] = &GRPCProviderPlugin{
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GRPCProvider: opts.GRPCProviderFunc,
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}
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}
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if opts.GRPCProvisionerFunc != nil {
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plugins[5]["provisioner"] = &GRPCProvisionerPlugin{
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GRPCProvisioner: opts.GRPCProvisionerFunc,
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}
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}
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}
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return plugins
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}
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