Refactor GoVPP

Squashed commit of the following:

commit 348930db31575e9f59b3834d9fec07411f011e05
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Wed Aug 15 11:30:13 2018 +0200

    Use debug level for log about different context

commit 9fc963c559cea67a41b85c6cdadc322fb3b1fc7c
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Wed Aug 15 11:22:03 2018 +0200

    Remove annoying logs and add env vars for debugging

commit fdc9fd624d13feadb602e0d03d58f8a44b7a565f
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Wed Aug 15 11:18:47 2018 +0200

    Fix printing unknown VPPApiError

commit 8f968be36a91de4d4a8ea17593ba314f82aa9583
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Tue Aug 14 17:25:10 2018 +0200

    Refactor entire GoVPP

    - fix some cases with inconsistent VPP messages, causing messages
      to be incorrectly identified as event or request
    - simplify API, remove direct access to internal Go channels
    - add module name with message to registration of messages
    - start watching filesystem only when vpe-api file does not exist
    - simplify code in message codec and remove unneeded parts
    - retrieve IDs of all registered messages after connect to VPP
    - define fallback for control ping in core to avoid duplicate registration
    - add SetLogLevel function to set logger level more easily
    - remove lot of unused code

commit 34dd1b7e10ef0324aa8c4e4cc42375bd6021c6cb
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Mon Aug 13 11:29:54 2018 +0200

    Rename VnetError to VPPApiError

commit c6549d6f77847a1367a12ff47fb716e2955e973a
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Mon Aug 13 10:23:43 2018 +0200

    Fix examples and regenerate binapi

commit 4612e36b416779771f5efab4fc654c2766d2cb1c
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Mon Aug 13 09:51:22 2018 +0200

    Add parsing and generation for services

commit ac9c5280c5aa27e325f327609e2364cc66f3723f
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Fri Aug 10 14:30:15 2018 +0200

    Fix exit status on error and add continue-onerror flag

commit 9b3f4ef9fc7c8c62037fa107085eae18a8725314
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 15:20:56 2018 +0200

    Return VnetError when Retval != 0

commit 8fd21a907b5e628ec4d2026215b83d15da96c297
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 14:59:05 2018 +0200

    Add all missing errors from api_errno.h

commit 08450f288d3046ebaecf40203174ae342a07f1eb
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 14:29:27 2018 +0200

    Update README

commit d8dced0728dd62243539be741868fb7d9b8de4cc
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 13:59:59 2018 +0200

    Regenerate vpe in core

commit 254da7592cdbf634cf7aa46ae36ce7bb6d4ee555
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 13:37:00 2018 +0200

    Add VnetError type for Retvals

commit 4475c1087fb53ab4c788e530bc7fef7cfc89d2cd
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 13:36:07 2018 +0200

    Add registration API

commit 892a3ea5a2c703e2f7c29331663f6a6fa706bff5
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 13:30:43 2018 +0200

    Generate registration for messages and check all IDs on connect

commit 389ed03b6e7082260281866c3449d72d72347c99
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 11:32:41 2018 +0200

    Show error for empty adapter (on Darwin/Windows)

commit ef1ea040d656ade64242432dc5f06810ed8dcde6
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 11:31:37 2018 +0200

    Improve logged info

commit d4adae3b14ed54c8d693060dd857fa9ba5ec8e06
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 11:27:48 2018 +0200

    Update examples

commit 63921e1346014701a22639a2611129563bb1eb78
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Thu Aug 9 11:02:56 2018 +0200

    Generate unions and fix some issues

    - add comments between sections
    - define structs on single line if it has no fields
    - generate unions with setters/getters for each field
    - fix detection of message type

commit 6ab3e3fa590b245898306a6ffaf32c7721eab60c
Author: Ondrej Fabry <ofabry@cisco.com>
Date:   Wed Aug 8 15:37:10 2018 +0200

    Refactor binapi-generator

    - split JSON parsing from code generation
    - parse and generate enums
    - parse unions (no generation yet)
    - change output file suffix to '.ba.go'
    - cleanup and simplify code
    - split code into files
    - add flag for debug mode

Change-Id: I58f685e0d4c7a38e9a7b6ea0a1f47792d95d7399
Signed-off-by: Ondrej Fabry <ofabry@cisco.com>

1 files changed, 453 insertions, 0 deletions

diff --git a/examples/bin_api/tap/tap.ba.go b/examples/bin_api/tap/tap.ba.go
new file mode 100644
index 0000000..36f5549
--- /dev/null
+++ b/examples/bin_api/tap/tap.ba.go
@@ -0,0 +1,453 @@
+// Code generated by GoVPP binapi-generator. DO NOT EDIT.
+// source: tap.api.json
+
+/*
+Package tap is a generated VPP binary API of the 'tap' VPP module.
+
+It is generated from this file:
+	tap.api.json
+
+It contains these VPP binary API objects:
+	8 messages
+	4 services
+*/
+package tap
+
+import "git.fd.io/govpp.git/api"
+import "github.com/lunixbochs/struc"
+import "bytes"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = struc.Pack
+var _ = bytes.NewBuffer
+
+/* Messages */
+
+// TapConnect represents the VPP binary API message 'tap_connect'.
+// Generated from 'tap.api.json', line 4:
+//
+//            "tap_connect",
+//            [
+//                "u16",
+//                "_vl_msg_id"
+//            ],
+//            [
+//                "u32",
+//                "client_index"
+//            ],
+//            [
+//                "u32",
+//                "context"
+//            ],
+//            [
+//                "u8",
+//                "use_random_mac"
+//            ],
+//            [
+//                "u8",
+//                "tap_name",
+//                64
+//            ],
+//            [
+//                "u8",
+//                "mac_address",
+//                6
+//            ],
+//            [
+//                "u8",
+//                "renumber"
+//            ],
+//            [
+//                "u32",
+//                "custom_dev_instance"
+//            ],
+//            [
+//                "u8",
+//                "ip4_address_set"
+//            ],
+//            [
+//                "u8",
+//                "ip4_address",
+//                4
+//            ],
+//            [
+//                "u8",
+//                "ip4_mask_width"
+//            ],
+//            [
+//                "u8",
+//                "ip6_address_set"
+//            ],
+//            [
+//                "u8",
+//                "ip6_address",
+//                16
+//            ],
+//            [
+//                "u8",
+//                "ip6_mask_width"
+//            ],
+//            [
+//                "u8",
+//                "tag",
+//                64
+//            ],
+//            {
+//                "crc": "0x9b9c396f"
+//            }
+//
+type TapConnect struct {
+	UseRandomMac      uint8
+	TapName           []byte `struc:"[64]byte"`
+	MacAddress        []byte `struc:"[6]byte"`
+	Renumber          uint8
+	CustomDevInstance uint32
+	IP4AddressSet     uint8
+	IP4Address        []byte `struc:"[4]byte"`
+	IP4MaskWidth      uint8
+	IP6AddressSet     uint8
+	IP6Address        []byte `struc:"[16]byte"`
+	IP6MaskWidth      uint8
+	Tag               []byte `struc:"[64]byte"`
+}
+
+func (*TapConnect) GetMessageName() string {
+	return "tap_connect"
+}
+func (*TapConnect) GetCrcString() string {
+	return "9b9c396f"
+}
+func (*TapConnect) GetMessageType() api.MessageType {
+	return api.RequestMessage
+}
+func NewTapConnect() api.Message {
+	return &TapConnect{}
+}
+
+// TapConnectReply represents the VPP binary API message 'tap_connect_reply'.
+// Generated from 'tap.api.json', line 75:
+//
+//            "tap_connect_reply",
+//            [
+//                "u16",
+//                "_vl_msg_id"
+//            ],
+//            [
+//                "u32",
+//                "context"
+//            ],
+//            [
+//                "i32",
+//                "retval"
+//            ],
+//            [
+//                "u32",
+//                "sw_if_index"
+//            ],
+//            {
+//                "crc": "0xfda5941f"
+//            }
+//
+type TapConnectReply struct {
+	Retval    int32
+	SwIfIndex uint32
+}
+
+func (*TapConnectReply) GetMessageName() string {
+	return "tap_connect_reply"
+}
+func (*TapConnectReply) GetCrcString() string {
+	return "fda5941f"
+}
+func (*TapConnectReply) GetMessageType() api.MessageType {
+	return api.ReplyMessage
+}
+func NewTapConnectReply() api.Message {
+	return &TapConnectReply{}
+}
+
+// TapModify represents the VPP binary API message 'tap_modify'.
+// Generated from 'tap.api.json', line 97:
+//
+//            "tap_modify",
+//            [
+//                "u16",
+//                "_vl_msg_id"
+//            ],
+//            [
+//                "u32",
+//                "client_index"
+//            ],
+//            [
+//                "u32",
+//                "context"
+//            ],
+//            [
+//                "u32",
+//                "sw_if_index"
+//            ],
+//            [
+//                "u8",
+//                "use_random_mac"
+//            ],
+//            [
+//                "u8",
+//                "tap_name",
+//                64
+//            ],
+//            [
+//                "u8",
+//                "mac_address",
+//                6
+//            ],
+//            [
+//                "u8",
+//                "renumber"
+//            ],
+//            [
+//                "u32",
+//                "custom_dev_instance"
+//            ],
+//            {
+//                "crc": "0x8047ae5c"
+//            }
+//
+type TapModify struct {
+	SwIfIndex         uint32
+	UseRandomMac      uint8
+	TapName           []byte `struc:"[64]byte"`
+	MacAddress        []byte `struc:"[6]byte"`
+	Renumber          uint8
+	CustomDevInstance uint32
+}
+
+func (*TapModify) GetMessageName() string {
+	return "tap_modify"
+}
+func (*TapModify) GetCrcString() string {
+	return "8047ae5c"
+}
+func (*TapModify) GetMessageType() api.MessageType {
+	return api.RequestMessage
+}
+func NewTapModify() api.Message {
+	return &TapModify{}
+}
+
+// TapModifyReply represents the VPP binary API message 'tap_modify_reply'.
+// Generated from 'tap.api.json', line 141:
+//
+//            "tap_modify_reply",
+//            [
+//                "u16",
+//                "_vl_msg_id"
+//            ],
+//            [
+//                "u32",
+//                "context"
+//            ],
+//            [
+//                "i32",
+//                "retval"
+//            ],
+//            [
+//                "u32",
+//                "sw_if_index"
+//            ],
+//            {
+//                "crc": "0xfda5941f"
+//            }
+//
+type TapModifyReply struct {
+	Retval    int32
+	SwIfIndex uint32
+}
+
+func (*TapModifyReply) GetMessageName() string {
+	return "tap_modify_reply"
+}
+func (*TapModifyReply) GetCrcString() string {
+	return "fda5941f"
+}
+func (*TapModifyReply) GetMessageType() api.MessageType {
+	return api.ReplyMessage
+}
+func NewTapModifyReply() api.Message {
+	return &TapModifyReply{}
+}
+
+// TapDelete represents the VPP binary API message 'tap_delete'.
+// Generated from 'tap.api.json', line 163:
+//
+//            "tap_delete",
+//            [
+//                "u16",
+//                "_vl_msg_id"
+//            ],
+//            [
+//                "u32",
+//                "client_index"
+//            ],
+//            [
+//                "u32",
+//                "context"
+//            ],
+//            [
+//                "u32",
+//                "sw_if_index"
+//            ],
+//            {
+//                "crc": "0x529cb13f"
+//            }
+//
+type TapDelete struct {
+	SwIfIndex uint32
+}
+
+func (*TapDelete) GetMessageName() string {
+	return "tap_delete"
+}
+func (*TapDelete) GetCrcString() string {
+	return "529cb13f"
+}
+func (*TapDelete) GetMessageType() api.MessageType {
+	return api.RequestMessage
+}
+func NewTapDelete() api.Message {
+	return &TapDelete{}
+}
+
+// TapDeleteReply represents the VPP binary API message 'tap_delete_reply'.
+// Generated from 'tap.api.json', line 185:
+//
+//            "tap_delete_reply",
+//            [
+//                "u16",
+//                "_vl_msg_id"
+//            ],
+//            [
+//                "u32",
+//                "context"
+//            ],
+//            [
+//                "i32",
+//                "retval"
+//            ],
+//            {
+//                "crc": "0xe8d4e804"
+//            }
+//
+type TapDeleteReply struct {
+	Retval int32
+}
+
+func (*TapDeleteReply) GetMessageName() string {
+	return "tap_delete_reply"
+}
+func (*TapDeleteReply) GetCrcString() string {
+	return "e8d4e804"
+}
+func (*TapDeleteReply) GetMessageType() api.MessageType {
+	return api.ReplyMessage
+}
+func NewTapDeleteReply() api.Message {
+	return &TapDeleteReply{}
+}
+
+// SwInterfaceTapDump represents the VPP binary API message 'sw_interface_tap_dump'.
+// Generated from 'tap.api.json', line 203:
+//
+//            "sw_interface_tap_dump",
+//            [
+//                "u16",
+//                "_vl_msg_id"
+//            ],
+//            [
+//                "u32",
+//                "client_index"
+//            ],
+//            [
+//                "u32",
+//                "context"
+//            ],
+//            {
+//                "crc": "0x51077d14"
+//            }
+//
+type SwInterfaceTapDump struct{}
+
+func (*SwInterfaceTapDump) GetMessageName() string {
+	return "sw_interface_tap_dump"
+}
+func (*SwInterfaceTapDump) GetCrcString() string {
+	return "51077d14"
+}
+func (*SwInterfaceTapDump) GetMessageType() api.MessageType {
+	return api.RequestMessage
+}
+func NewSwInterfaceTapDump() api.Message {
+	return &SwInterfaceTapDump{}
+}
+
+// SwInterfaceTapDetails represents the VPP binary API message 'sw_interface_tap_details'.
+// Generated from 'tap.api.json', line 221:
+//
+//            "sw_interface_tap_details",
+//            [
+//                "u16",
+//                "_vl_msg_id"
+//            ],
+//            [
+//                "u32",
+//                "context"
+//            ],
+//            [
+//                "u32",
+//                "sw_if_index"
+//            ],
+//            [
+//                "u8",
+//                "dev_name",
+//                64
+//            ],
+//            {
+//                "crc": "0x76229a57"
+//            }
+//
+type SwInterfaceTapDetails struct {
+	SwIfIndex uint32
+	DevName   []byte `struc:"[64]byte"`
+}
+
+func (*SwInterfaceTapDetails) GetMessageName() string {
+	return "sw_interface_tap_details"
+}
+func (*SwInterfaceTapDetails) GetCrcString() string {
+	return "76229a57"
+}
+func (*SwInterfaceTapDetails) GetMessageType() api.MessageType {
+	return api.ReplyMessage
+}
+func NewSwInterfaceTapDetails() api.Message {
+	return &SwInterfaceTapDetails{}
+}
+
+/* Services */
+
+type Services interface {
+	DumpSwInterfaceTap(*SwInterfaceTapDump) (*SwInterfaceTapDetails, error)
+	TapConnect(*TapConnect) (*TapConnectReply, error)
+	TapDelete(*TapDelete) (*TapDeleteReply, error)
+	TapModify(*TapModify) (*TapModifyReply, error)
+}
+
+func init() {
+	api.RegisterMessage((*TapConnect)(nil), "tap.TapConnect")
+	api.RegisterMessage((*TapConnectReply)(nil), "tap.TapConnectReply")
+	api.RegisterMessage((*TapModify)(nil), "tap.TapModify")
+	api.RegisterMessage((*TapModifyReply)(nil), "tap.TapModifyReply")
+	api.RegisterMessage((*TapDelete)(nil), "tap.TapDelete")
+	api.RegisterMessage((*TapDeleteReply)(nil), "tap.TapDeleteReply")
+	api.RegisterMessage((*SwInterfaceTapDump)(nil), "tap.SwInterfaceTapDump")
+	api.RegisterMessage((*SwInterfaceTapDetails)(nil), "tap.SwInterfaceTapDetails")
+}