all repos — litestore @ 0f9a86fbb460c90786199dc803f71ca70352ec9d

A minimalist nosql document store.

src/litestorepkg/lib/server.nim

 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 
import
  asynchttpserver
  asyncdispatch,
  times,
  strutils,
  pegs,
  logger,
  cgi
import
  types,
  utils,
  api_v1,
  api_v2,
  api_v3,
  api_v4

export
  api_v4

proc getReqInfo(req: LSRequest): 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 ""
  LOG.info("Exiting...")
  quit()

proc processApiUrl(req: LSRequest, LS: LiteStore, info: ResourceInfo): LSResponse =
  if info.version == "v4":
    if info.resource.match(peg"^docs / info / tags$"):
      return api_v4.route(req, LS, info.resource, info.id)
    elif info.resource.match(peg"^dir$"):
      if LS.directory.len > 0:
        return api_v4.serveFile(req, LS, info.id)
      else:
        return resError(Http400, "Bad Request - Not serving any directory." % info.version)
    else:
      return resError(Http404, "Resource Not Found: $1" % info.resource)
  elif info.version == "v3":
    if info.resource.match(peg"^docs / info$"):
      return api_v3.route(req, LS, info.resource, info.id)
    elif info.resource.match(peg"^dir$"):
      if LS.directory.len > 0:
        return api_v3.serveFile(req, LS, info.id)
      else:
        return resError(Http400, "Bad Request - Not serving any directory." % info.version)
    else:
      return resError(Http404, "Resource Not Found: $1" % info.resource)
  elif info.version == "v2":
    if info.resource.match(peg"^docs / info$"):
      return api_v2.route(req, LS, info.resource, info.id)
    elif info.resource.match(peg"^dir$"):
      if LS.directory.len > 0:
        return api_v2.serveFile(req, LS, info.id)
      else:
        return resError(Http400, "Bad Request - Not serving any directory." % info.version)
    else:
      return resError(Http404, "Resource Not Found: $1" % info.resource)
  elif info.version == "v1":
    if info.resource.match(peg"^docs / info$"):
      return api_v1.route(req, LS, info.resource, info.id)
    elif info.resource.match(peg"^dir$"):
      if LS.directory.len > 0:
        return api_v1.serveFile(req, LS, info.id)
      else:
        return resError(Http400, "Bad Request - Not serving any directory." % info.version)
    else:
      return resError(Http404, "Resource Not Found: $1" % info.resource)
  else:
    if info.version == "v1" or info.version == "v2" or info.version == "v3" or info.version == "v4":
      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(Http404, "Resource Not Found: $1" % info.resource)

proc process*(req: LSRequest, LS: LiteStore): LSResponse {.gcsafe.}=
  var matches = @["", "", ""]
  template route(req: LSRequest, peg: Peg, op: untyped): untyped =
    if req.url.path.find(peg, matches) != -1:
      op
  try:
    var info: ResourceInfo
    req.route peg"^\/?$":
      info.version = "v4"
      info.resource = "info"
      return req.processApiUrl(LS, info)
    req.route peg"^\/favicon.ico$":
      result.code = Http200
      result.content = LS.favicon
      result.headers = ctHeader("image/x-icon")
      return result
    req.route PEG_DEFAULT_URL:
      info.version = "v4"
      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(Http404, "Resource Not Found: $1" % getCurrentExceptionMsg().split(" ")[2], 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: LSRequest): Future[void] {.async, gcsafe, closure.} =
    LOG.info(getReqInfo(req).replace("$", "$$"))
    let res = req.process(LS)
    let areq = asynchttpserver.Request(req)
    await areq.respond(res.code, res.content, res.headers)
  echo(LS.appname & " v" & LS.appversion & " started on " & LS.address & ":" & $LS.port & ".")
  if LS.mount:
    echo("Mirroring datastore changes to: " & LS.directory)
  asyncCheck server.serve(LS.port.Port, handleHttpRequest, LS.address)