Improve binapi generator

- simplified Size/Marshal/Unmarshal methods
- replace struc in unions with custom marshal/unmarshal
- fix imports in generated files
- fix mock adapter
- generate rpc service using low-level stream API (dumps generate control ping or stream msg..)
- move examples/binapi to binapi and generate all API for latest release
- add binapigen.Plugin for developing custom generator plugins
- optionally generate HTTP handlers (REST API) for RPC services
- add govpp program for browsing VPP API

Change-Id: I092e9ed2b0c17972b3476463c3d4b14dd76ed42b
Signed-off-by: Ondrej Fabry <ofabry@cisco.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/binapigen/plugin.go b/binapigen/plugin.go
new file mode 100644
index 0000000..b57cc68
--- /dev/null
+++ b/binapigen/plugin.go
@@ -0,0 +1,51 @@
+//  Copyright (c) 2020 Cisco and/or its affiliates.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at:
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+package binapigen
+
+import "fmt"
+
+type Plugin struct {
+	Name         string
+	GenerateFile func(*Generator, *File) *GenFile
+}
+
+var Plugins = map[string]*Plugin{}
+var plugins []*Plugin
+
+func RegisterPlugin(name string, genfn func(*Generator, *File) *GenFile) {
+	if name == "" {
+		panic("plugin name empty")
+	}
+	for _, p := range plugins {
+		if p.Name == name {
+			panic("duplicate plugin name: " + name)
+		}
+	}
+	plugin := &Plugin{
+		Name:         name,
+		GenerateFile: genfn,
+	}
+	plugins = append(plugins, plugin)
+	Plugins[name] = plugin
+}
+
+func RunPlugin(name string, gen *Generator, file *File) error {
+	p, ok := Plugins[name]
+	if !ok {
+		return fmt.Errorf("plugin not found: %q", name)
+	}
+	p.GenerateFile(gen, file)
+	return nil
+}