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s/@"type"/t/ and many new tests.

This commit is contained in:
Philippe Pittoli 2022-12-22 08:30:32 +01:00
parent 0eb5dc57f5
commit 91995657dd

View File

@ -33,40 +33,52 @@ pub const Message = struct {
NETWORK_LOOKUP,
};
@"type": Message.Type, // Internal message type.
fd: usize, // File descriptor concerned about this message.
t: Message.Type, // Internal message type.
fd: usize, // File descriptor concerned about this message.
payload: []const u8,
allocator: std.mem.Allocator, // Memory allocator.
const Self = @This();
// TODO
//pub fn initFromConnection(fd: usize) Self {
// return Self{
// .@"type" = Message.Type.ERROR,
// .fd = fd,
// .payload = "hello",
// .t = Message.Type.ERROR,
// .fd = fd,
// .payload = "hello",
// };
//}
pub fn init(fd: usize, @"type": Message.Type, payload: []const u8) Self {
return Message {
.fd = fd,
.@"type" = @"type",
.payload = payload,
};
pub fn init(fd: usize, t: Message.Type
, allocator: std.mem.Allocator
, payload: []const u8) !Self {
return Message { .fd = fd, .t = t
, .allocator = allocator
, .payload = try allocator.dupe(u8, payload) };
}
pub fn deinit(self: *Self) void {
self.allocator.free(self.payload);
}
pub fn format(self: Self, comptime _: []const u8, _: fmt.FormatOptions, out_stream: anytype) !void {
try fmt.format(out_stream, "fd: {}, {}, payload: [{s}]",
.{self.fd, self.@"type", self.payload} );
.{self.fd, self.t, self.payload} );
}
};
test "Message - creation and display" {
print("\n", .{});
// fd type usertype payload
// fd type payload
const config = .{.safety = true};
var gpa = std.heap.GeneralPurposeAllocator(config){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var s = "hello!!";
var m = Message.init(1, Message.Type.DATA, s);
var m = try Message.init(1, Message.Type.DATA, allocator, s);
defer m.deinit();
print("message:\t[{}]\n", .{m});
print("\n", .{});
@ -112,38 +124,26 @@ pub const Event = struct {
TX, // Message sent.
};
@"type": Event.Type,
t: Event.Type,
index: u32,
origin: usize,
origin: usize, // socket fd
m: ?*Message, // message pointer
const Self = @This();
pub fn init(@"type": Event.Type,
index: u32,
origin: usize,
m: ?*Message) Self {
return Self {
.@"type" = @"type",
.index = index,
.origin = origin,
.m = m,
};
pub fn init(t: Event.Type, index: u32, origin: usize, m: ?*Message) Self {
return Self { .t = t, .index = index, .origin = origin, .m = m, };
}
pub fn set(self: *Self,
@"type": Event.Type,
index: u32,
origin: usize,
m: ?*Message) void {
self.@"type" = @"type";
pub fn set(self: *Self, t: Event.Type, index: u32, origin: usize, m: ?*Message) void {
self.t = t;
self.index = index;
self.origin = origin;
self.m = m;
}
pub fn clean(self: *Self) void {
self.@"type" = Event.Type.NOT_SET;
self.t = Event.Type.NOT_SET;
self.index = @as(u8,0);
self.origin = @as(usize,0);
if (self.m) |message| {
@ -155,18 +155,22 @@ pub const Event = struct {
pub fn format(self: Self, comptime _: []const u8, _: fmt.FormatOptions, out_stream: anytype) !void {
try fmt.format(out_stream
, "{}, origin: {}, index {}, message: [{?}]"
, .{ self.@"type", self.origin, self.index, self.m} );
, .{ self.t, self.origin, self.index, self.m} );
}
};
test "Event - creation and display" {
print("\n", .{});
const config = .{.safety = true};
var gpa = std.heap.GeneralPurposeAllocator(config){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var s = "hello!!";
// fd type usertype payload
var m = Message.init(1, Message.Type.DATA, s);
// type index origin message
var e = Event.init(Event.Type.CONNECTION, 5, 8, &m);
var m = try Message.init(1, Message.Type.DATA, allocator, s); // fd type payload
defer m.deinit();
var e = Event.init(Event.Type.CONNECTION, 5, 8, &m); // type index origin message
print("event:\t[{}]\n", .{e});
print("\n", .{});
@ -208,7 +212,7 @@ pub const CBEvent = struct {
IGNORE, // The message should be ignored (protocol specific).
};
@"type": CBEvent.Type,
t: CBEvent.Type,
};
pub const Connection = struct {
@ -220,7 +224,7 @@ pub const Connection = struct {
SWITCHED, // IO operations should go through registered callbacks.
};
@"type": Connection.Type,
t: Connection.Type,
path: ?[] const u8, // Not always needed.
// TODO: use these connections
@ -231,9 +235,9 @@ pub const Connection = struct {
const Self = @This();
pub fn init(@"type": Connection.Type, path: ?[] const u8) Self {
pub fn init(t: Connection.Type, path: ?[] const u8) Self {
return Self {
.@"type" = @"type",
.t = t,
.path = path,
// .more_to_read = false, // TODO: maybe useless
};
@ -245,7 +249,7 @@ pub const Connection = struct {
}
pub fn format(self: Self, comptime _: []const u8, _: fmt.FormatOptions, out_stream: anytype) !void {
try fmt.format(out_stream, "{}, path {?s}", .{ self.@"type", self.path});
try fmt.format(out_stream, "{}, path {?s}", .{ self.t, self.path});
if (self.server) |s| {
try fmt.format(out_stream, "{}" , .{s});
@ -295,11 +299,45 @@ pub const Switch = struct {
}
};
fn print_eq(expected: anytype, obj: anytype) !void {
var buffer: [4096]u8 = undefined;
var fbs = std.io.fixedBufferStream(&buffer);
var writer = fbs.writer();
try writer.print("{}", .{obj});
// print("print_eq, expected: {s}\n", .{expected});
// print("print_eq: {s}\n", .{fbs.getWritten()});
// typing workaround
var secbuffer: [4096]u8 = undefined;
var secfbs = std.io.fixedBufferStream(&secbuffer);
var secwriter = secfbs.writer();
try secwriter.print("{s}", .{expected});
try std.testing.expectEqualSlices(u8, secfbs.getWritten(), fbs.getWritten());
}
test "Switch - creation and display" {
// origin destination
var s = Switch.init(3,8);
print("\nswitch:\t[{}]\n", .{s});
print("\n", .{});
const config = .{.safety = true};
var gpa = std.heap.GeneralPurposeAllocator(config){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var switchdb = Switches.init(allocator);
defer switchdb.deinit();
var first = Switch.init(3,8); // origin destination
var second = Switch.init(2,4); // origin destination
try switchdb.append(first);
try switchdb.append(second);
try print_eq("switch 3 <-> 8", first);
try print_eq("switch 2 <-> 4", second);
print("\nswitch:\t[{}]\n", .{first});
print( "switch:\t[{}]\n", .{second});
print("switchdb:\t[{}]\n\n", .{switchdb});
}
// Context of the whole networking state.
@ -329,8 +367,6 @@ pub const Context = struct {
// Context initialization:
// - init structures (provide the allocator)
pub fn init(allocator: std.mem.Allocator) !Self {
print("Context init\n", .{});
var rundir = std.process.getEnvVarOwned(allocator, "RUNDIR") catch |err| switch(err) {
error.EnvironmentVariableNotFound => blk: {
print("RUNTIME variable not set, using default /tmp/libipc-run/\n", .{});
@ -340,7 +376,6 @@ pub const Context = struct {
return err;
},
};
print("rundir: {s}\n", .{rundir});
return Self {
.rundir = rundir
@ -352,8 +387,12 @@ pub const Context = struct {
};
}
// create a server path for the UNIX socket based on the service name
pub fn server_path(self: *Self, service_name: []const u8, writer: anytype) !void {
try writer.print("{s}/{s}", .{self.rundir, service_name});
}
pub fn deinit(self: *Self) void {
print("context deinit\n", .{});
self.close_all() catch |err| switch(err){
error.IndexOutOfBounds => {
print("context.deinit(): IndexOutOfBounds\n", .{});
@ -416,24 +455,21 @@ pub const Context = struct {
}
pub fn read (self: *Self, index: u32) !Message {
// TODO: read the actual content.
if (index >= self.pollfd.items.len) {
return error.IndexOutOfBounds;
}
print("read index {}\n", .{index});
var fd = self.pollfd[index];
print("read fd {} index {}\n", .{fd, index});
var payload = "hello!!";
// fd type usertype payload
var m = Message.init(0, Message.Type.DATA, payload);
return m;
return self.read_fd(fd);
}
pub fn read_fd (_: *Self, fd: i32) !Message {
// TODO: read the actual content.
pub fn read_fd (self: *Self, fd: i32) !Message {
print("read fd {}\n", .{fd});
// TODO: read the actual content.
var payload = "hello!!";
// fd type usertype payload
var m = Message.init(0, Message.Type.DATA, payload);
var m = Message.init(fd, Message.Type.DATA, self.allocator, payload);
return m;
}
@ -458,7 +494,6 @@ pub const Context = struct {
}
// close the connection and remove it from the two structures
// TODO: actually close the file descriptor.
var con = self.connections.swapRemove(index);
if (con.server) |s| {
// Remove service's UNIX socket file.
@ -498,15 +533,53 @@ pub const Context = struct {
fn read_ (_: *Self, client: net.StreamServer.Connection, buf: [] u8) !usize {
return try client.stream.reader().read(buf);
}
};
// Creating a new thread: testing UNIX communication.
// This is a client sending a raw "Hello world!" bytestring,
// not an instance of Message.
const CommunicationTestThread = struct {
fn clientFn() !void {
const config = .{.safety = true};
var gpa = std.heap.GeneralPurposeAllocator(config){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var c = try Context.init(allocator);
defer c.deinit(); // There. Can't leak. Isn't Zig wonderful?
var buffer: [1000]u8 = undefined;
var fbs = std.io.fixedBufferStream(&buffer);
var writer = fbs.writer();
try c.server_path("simple-context-test", writer);
var path = fbs.getWritten();
const socket = try net.connectUnixSocket(path);
defer socket.close();
print("So we're a client now... path: {s}\n", .{path});
_ = try socket.writer().writeAll("Hello world!");
}
};
test "Simple structures - init, display and memory check" {
// origin destination
// var s = Switch.init(3,8);
// var payload = "hello!!";
// // fd type payload
// var m = Message.init(0, Message.Type.DATA, payload);
//
// // type index origin message
// var e = Event.init(Event.Type.CONNECTION, 5, 8, &m);
// // CLIENT SIDE: connection to a service.
// _ = try c.connect(path);
// // TODO: connection to a server, but switched with clientfd "3".
// _ = try c.connection_switched(path, 3);
}
// TODO
test "Context - creation, display and memory check" {
print("\n", .{});
// origin destination
//var s = Switch.init(3,8);
const config = .{.safety = true};
var gpa = std.heap.GeneralPurposeAllocator(config){};
@ -514,44 +587,82 @@ test "Context - creation, display and memory check" {
const allocator = gpa.allocator();
// var payload = "hello!!";
// // fd type usertype payload
// var m = Message.init(0, Message.Type.DATA, payload);
//
// // type index origin message
// var e = Event.init(Event.Type.CONNECTION, 5, 8, &m);
var c = try Context.init(allocator);
defer c.deinit(); // There. Can't leak. Isn't Zig wonderful?
const path = "/tmp/.TEST_USOCK";
var buffer: [1000]u8 = undefined;
var fbs = std.io.fixedBufferStream(&buffer);
var writer = fbs.writer();
try c.server_path("simple-context-test", writer);
var path = fbs.getWritten();
// SERVER SIDE: creating a service.
var server = try c.server_init(path);
defer server.deinit();
defer std.fs.cwd().deleteFile(path) catch {}; // Once done, remove file.
// CLIENT SIDE: connection to a service.
//_ = try c.connect(path);
// TODO: connection to a server, but switched with clientfd "3".
// _ = try c.connection_switched(path, 3);
// print ("Context: {}\n", .{c});
// print("\n", .{});
const t = try std.Thread.spawn(.{}, CommunicationTestThread.clientFn, .{});
defer t.join();
const S = struct {
fn clientFn() !void {
const socket = try net.connectUnixSocket(path);
defer socket.close();
print("So we're a client now... path: {s}\n", .{path});
// Server.accept returns a net.StreamServer.Connection.
var client = try server.accept();
defer client.stream.close();
var buf: [16]u8 = undefined;
const n = try client.stream.reader().read(&buf);
_ = try socket.writer().writeAll("Hello world!");
}
};
try testing.expectEqual(@as(usize, 12), n);
try testing.expectEqualSlices(u8, "Hello world!", buf[0..n]);
}
const t = try std.Thread.spawn(.{}, S.clientFn, .{});
const ConnectThenSendMessageThread = struct {
fn clientFn() !void {
const config = .{.safety = true};
var gpa = std.heap.GeneralPurposeAllocator(config){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var c = try Context.init(allocator);
defer c.deinit(); // There. Can't leak. Isn't Zig wonderful?
var buffer: [1000]u8 = undefined;
var fbs = std.io.fixedBufferStream(&buffer);
var writer = fbs.writer();
try c.server_path("simple-context-test", writer);
var path = fbs.getWritten();
const socket = try net.connectUnixSocket(path);
defer socket.close();
print("So we're a client now... path: {s}\n", .{path});
_ = try socket.writer().writeAll("Hello world!");
}
};
test "Context - creation, echo once" {
print("\n", .{});
const config = .{.safety = true};
var gpa = std.heap.GeneralPurposeAllocator(config){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var c = try Context.init(allocator);
defer c.deinit(); // There. Can't leak. Isn't Zig wonderful?
var buffer: [1000]u8 = undefined;
var fbs = std.io.fixedBufferStream(&buffer);
var writer = fbs.writer();
try c.server_path("simple-context-test", writer);
var path = fbs.getWritten();
// SERVER SIDE: creating a service.
var server = try c.server_init(path);
defer server.deinit();
defer std.fs.cwd().deleteFile(path) catch {}; // Once done, remove file.
const t = try std.Thread.spawn(.{}, ConnectThenSendMessageThread.clientFn, .{});
defer t.join();
// Server.accept returns a net.StreamServer.Connection.
@ -580,12 +691,12 @@ fn create_service() !void {
// SERVER SIDE: creating a service.
_ = try ctx.server_init(path);
var event = try ctx.wait_event();
switch (event.@"type") {
switch (event.t) {
.CONNECTION => {
print("New connection!\n", .{});
},
else => {
print("New event: {}\n", .{event.@"type"});
print("New event: {}\n", .{event.t});
},
}