nwaku/apps/networkmonitor/networkmonitor_utils.nim

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when (NimMajor, NimMinor) < (1, 4):
{.push raises: [Defect].}
else:
{.push raises: [].}
import
std/json,
stew/results,
stew/shims/net,
chronicles,
chronicles/topics_registry,
chronos,
presto/[client,common]
type
NodeLocation* = object
country*: string
city*: string
lat*: string
long*: string
isp*: string
proc flatten*[T](a: seq[seq[T]]): seq[T] =
var aFlat = newSeq[T](0)
for subseq in a:
aFlat &= subseq
return aFlat
proc decodeBytes*(t: typedesc[NodeLocation], value: openArray[byte],
contentType: Opt[ContentTypeData]): RestResult[NodeLocation] =
var res: string
if len(value) > 0:
res = newString(len(value))
copyMem(addr res[0], unsafeAddr value[0], len(value))
try:
let jsonContent = parseJson(res)
if $jsonContent["status"].getStr() != "success":
error "query failed", result=jsonContent
return err("query failed")
return ok(NodeLocation(
country: jsonContent["country"].getStr(),
city: jsonContent["city"].getStr(),
lat: $jsonContent["lat"].getFloat(),
long: $jsonContent["lon"].getFloat(),
isp: jsonContent["isp"].getStr()
))
except Exception:
return err("failed to get the location: " & getCurrentExceptionMsg())
proc encodeString*(value: string): RestResult[string] =
ok(value)
proc ipToLocation*(ip: string): RestResponse[NodeLocation] {.rest, endpoint: "json/{ip}", meth: MethodGet.}