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Remove read (#171) 

* use readExactly

* remove `read`

* remove read

* no more `read`
This commit is contained in:
Dmitriy Ryajov 2020-05-14 22:02:05 -06:00 committed by GitHub
parent 69abf5097d
commit 167f42ed45
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 50 additions and 56 deletions
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11
libp2p/stream/lpstream.nim
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@ -75,17 +75,6 @@ method readOnce*(s: LPStream,
{.base, async.} =
doAssert(false, "not implemented!")
proc read*(s: LPStream, nbytes: int): Future[seq[byte]] {.async, deprecated: "readExactly".} =
# This function is deprecated - it was broken and used inappropriately as
# `readExacltly` in tests and code - tests still need refactoring to remove
# any calls
# `read` without nbytes was also incorrectly implemented - it worked more
# like `readOnce` in that it would not wait for stream to close, in
# BufferStream in particular - both tests and implementation were broken
var ret = newSeq[byte](nbytes)
await readExactly(s, addr ret[0], ret.len)
return ret
proc readLine*(s: LPStream, limit = 0, sep = "\r\n"): Future[string] {.async, deprecated: "todo".} =
# TODO replace with something that exploits buffering better
var lim = if limit <= 0: -1 else: limit

65
tests/testbufferstream.nim
View File

@ -52,29 +52,9 @@ suite "BufferStream":
check buff.len == 0
await buff.pushTo(cast[seq[byte]](@"12345"))
let data = cast[string](await buff.read(3))
check ['1', '2', '3'] == data
result = true
await buff.close()
check:
waitFor(testRead()) == true
test "read and wait":
proc testRead(): Future[bool] {.async.} =
proc writeHandler(data: seq[byte]) {.async, gcsafe.} = discard
let buff = newBufferStream(writeHandler, 10)
check buff.len == 0
await buff.pushTo(cast[seq[byte]](@"123"))
check buff.len == 3
let readFut = buff.read(5)
await buff.pushTo(cast[seq[byte]](@"45"))
check buff.len == 2
check cast[string](await readFut) == ['1', '2', '3', '4', '5']
var data = newSeq[byte](3)
await buff.readExactly(addr data[0], 3)
check ['1', '2', '3'] == cast[string](data)
result = true
@ -213,17 +193,28 @@ suite "BufferStream":
await buff.pushTo(cast[seq[byte]]("Msg 2"))
await buff.pushTo(cast[seq[byte]]("Msg 3"))
check cast[string](await buff.read(5)) == "Msg 1"
check cast[string](await buff.read(5)) == "Msg 2"
check cast[string](await buff.read(5)) == "Msg 3"
var data = newSeq[byte](5)
await buff.readExactly(addr data[0], 5)
check cast[string](data) == "Msg 1"
await buff.readExactly(addr data[0], 5)
check cast[string](data) == "Msg 2"
await buff.readExactly(addr data[0], 5)
check cast[string](data) == "Msg 3"
await buff.pushTo(cast[seq[byte]]("Msg 4"))
await buff.pushTo(cast[seq[byte]]("Msg 5"))
await buff.pushTo(cast[seq[byte]]("Msg 6"))
check cast[string](await buff.read(5)) == "Msg 4"
check cast[string](await buff.read(5)) == "Msg 5"
check cast[string](await buff.read(5)) == "Msg 6"
await buff.readExactly(addr data[0], 5)
check cast[string](data) == "Msg 4"
await buff.readExactly(addr data[0], 5)
check cast[string](data) == "Msg 5"
await buff.readExactly(addr data[0], 5)
check cast[string](data) == "Msg 6"
result = true
@ -329,7 +320,10 @@ suite "BufferStream":
buf1 = buf1.pipe(buf1)
proc reader(): Future[seq[byte]] = buf1.read(6)
proc reader(): Future[seq[byte]] {.async.} =
result = newSeq[byte](6)
await buf1.readExactly(addr result[0], 6)
proc writer(): Future[void] = buf1.write(cast[seq[byte]]("Hello!"))
var writerFut = writer()
@ -402,7 +396,10 @@ suite "BufferStream":
buf1 = buf1 | buf1
proc reader(): Future[seq[byte]] = buf1.read(6)
proc reader(): Future[seq[byte]] {.async.} =
result = newSeq[byte](6)
await buf1.readExactly(addr result[0], 6)
proc writer(): Future[void] = buf1.write(cast[seq[byte]]("Hello!"))
var writerFut = writer()
@ -423,15 +420,14 @@ suite "BufferStream":
# piping to self
test "pipe deadlock":
proc pipeTest(): Future[bool] {.async.} =
var buf1 = newBufferStream(size = 5)
buf1 = buf1 | buf1
var count = 30000
proc reader() {.async.} =
while count > 0:
discard await buf1.read(7)
var data = newSeq[byte](7)
await buf1.readExactly(addr data[0], 7)
proc writer() {.async.} =
while count > 0:
@ -470,4 +466,3 @@ suite "BufferStream":
check:
waitFor(closeTest()) == true

12
tests/testmplex.nim
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@ -447,7 +447,9 @@ suite "Mplex":
test "half closed - channel should close for read by remote":
proc testClosedForRead(): Future[void] {.async.} =
proc writeHandler(data: seq[byte]) {.async, gcsafe.} = discard
proc writeHandler(data: seq[byte]) {.async, gcsafe.} =
discard
let
buff = newBufferStream(writeHandler)
conn = newConnection(buff)
@ -456,8 +458,9 @@ suite "Mplex":
try:
await chann.pushTo(cast[seq[byte]]("Hello!"))
await chann.closedByRemote()
discard await chann.read(6) # this should work, since there is data in the buffer
discard await chann.read(6) # this should throw
var data = newSeq[byte](6)
await chann.readExactly(addr data[0], 6) # this should work, since there is data in the buffer
await chann.readExactly(addr data[0], 6) # this should throw
finally:
await chann.cleanUp()
await conn.close()
@ -602,7 +605,8 @@ suite "Mplex":
try:
await chann.reset()
var data = await chann.read(1)
var data = newSeq[byte](1)
await chann.readExactly(addr data[0], 1)
doAssert(len(data) == 1)
finally:
await chann.cleanUp()

6
tests/testnoise.nim
View File

@ -98,7 +98,8 @@ suite "Noise":
conn = await transport2.dial(transport1.ma)
sconn = await clientNoise.secure(conn, true)
msg = await sconn.read(6)
var msg = newSeq[byte](6)
await sconn.readExactly(addr msg[0], 6)
await sconn.close()
await conn.close()
@ -123,7 +124,8 @@ suite "Noise":
defer:
await sconn.close()
await conn.close()
let msg = await sconn.read(6)
var msg = newSeq[byte](6)
await sconn.readExactly(addr msg[0], 6)
check cast[string](msg) == "Hello!"
readTask.complete()

12
tests/testtransport.nim
View File

@ -45,7 +45,8 @@ suite "TCP transport":
let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0")
let handlerWait = newFuture[void]()
proc connHandler(conn: Connection) {.async, gcsafe.} =
let msg = await conn.read(6)
var msg = newSeq[byte](6)
await conn.readExactly(addr msg[0], 6)
check cast[string](msg) == "Hello!"
await conn.close()
handlerWait.complete()
@ -84,7 +85,8 @@ suite "TCP transport":
let ma: MultiAddress = MultiAddress.init(server.sock.getLocalAddress())
let transport: TcpTransport = newTransport(TcpTransport)
let conn = await transport.dial(ma)
let msg = await conn.read(6)
var msg = newSeq[byte](6)
await conn.readExactly(addr msg[0], 6)
result = cast[string](msg) == "Hello!"
await handlerWait.wait(5000.millis) # when no issues will not wait that long!
@ -148,7 +150,8 @@ suite "TCP transport":
let transport2: TcpTransport = newTransport(TcpTransport)
let conn = await transport2.dial(transport1.ma)
let msg = await conn.read(6)
var msg = newSeq[byte](6)
await conn.readExactly(addr msg[0], 6)
await handlerWait.wait(5000.millis) # when no issues will not wait that long!
@ -166,7 +169,8 @@ suite "TCP transport":
let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0")
let handlerWait = newFuture[void]()
proc connHandler(conn: Connection) {.async, gcsafe.} =
let msg = await conn.read(6)
var msg = newSeq[byte](6)
await conn.readExactly(addr msg[0], 6)
check cast[string](msg) == "Hello!"
await conn.close()
handlerWait.complete()