lib/server.nim
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import
asynchttpserver2,
asyncdispatch,
times,
strutils,
pegs,
strtabs,
#logging,
cgi
import
types,
utils,
api_v1
proc getReqInfo(req: Request): string =
var url = req.url.path
if req.url.anchor != "":
url = url & "#" & req.url.anchor
if req.url.query != "":
url = url & "?" & req.url.query
return req.hostname & " " & req.reqMethod & " " & url
proc handleCtrlC() {.noconv.} =
echo ""
info("Exiting...")
quit()
proc processApiUrl(req: Request, LS: LiteStore, info: ResourceInfo): Response =
if info.version == "v1" and info.resource.match(peg"^docs / info$"):
return api_v1.route(req, LS, info.resource, info.id)
else:
if info.version != "v1":
return resError(Http400, "Bad request - Invalid API version: $1" % info.version)
else:
if info.resource.decodeURL.strip == "":
return resError(Http400, "Bad request - No resource specified" % info.resource)
else:
return resError(Http400, "Bad request - Invalid resource: $1" % info.resource)
proc process(req: Request, LS: LiteStore): Response {.gcsafe.}=
var matches = @["", "", ""]
template route(req, peg: expr, op: stmt): stmt {.immediate.}=
if req.url.path.find(peg, matches) != -1:
op
try:
var info: ResourceInfo = (version: "", resource: "", id: "")
req.route peg"^\/?$":
info.version = "v1"
info.resource = "info"
return req.processApiUrl(LS, info)
req.route peg"^\/favicon.ico$":
result.code = Http200
result.content = LS.favicon
result.headers = {"Content-Type": "image/x-icon"}.newStringTable
return result
req.route PEG_DEFAULT_URL:
info.version = "v1"
info.resource = matches[0]
info.id = matches[1]
return req.processApiUrl(LS, info)
req.route PEG_URL:
info.version = matches[0]
info.resource = matches[1]
info.id = matches[2]
return req.processApiUrl(LS, info)
raise newException(EInvalidRequest, req.getReqInfo())
except EInvalidRequest:
let e = (ref EInvalidRequest)(getCurrentException())
let trace = e.getStackTrace()
return resError(Http400, "Bad Request: $1" % getCurrentExceptionMsg(), trace)
except:
let e = getCurrentException()
let trace = e.getStackTrace()
return resError(Http500, "Internal Server Error: $1" % getCurrentExceptionMsg(), trace)
setControlCHook(handleCtrlC)
proc serve*(LS: LiteStore) =
var server = newAsyncHttpServer()
proc handleHttpRequest(req: Request): Future[void] {.async, gcsafe, closure.} =
info(getReqInfo(req).replace("$", "$$"))
let res = req.process(LS)
await req.respond(res.code, res.content, res.headers)
info(LS.appname & " v" & LS.appversion & " started on " & LS.address & ":" & $LS.port & ".")
if LS.mount:
info("Mirroring datastore changes to: " & LS.directory)
asyncCheck server.serve(LS.port.Port, handleHttpRequest, LS.address)
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