wisp handler

Author: Ryan Miville

gleam.toml

@@ -18,6 +18,7 @@ target = "javascript"
 gleam_stdlib = ">= 0.34.0 and < 2.0.0"
 gleam_javascript = ">= 0.13.0 and < 1.0.0"
 gleam_http = ">= 3.7.0 and < 4.0.0"
+wisp = ">= 1.2.0 and < 2.0.0"
 
 [dev-dependencies]
 gleeunit = ">= 1.0.0 and < 2.0.0"

manifest.toml

@@ -4,25 +4,41 @@
 packages = [
   { name = "argv", version = "1.0.2", build_tools = ["gleam"], requirements = [], otp_app = "argv", source = "hex", outer_checksum = "BA1FF0929525DEBA1CE67256E5ADF77A7CDDFE729E3E3F57A5BDCAA031DED09D" },
   { name = "birdie", version = "1.2.3", build_tools = ["gleam"], requirements = ["argv", "edit_distance", "filepath", "glance", "gleam_community_ansi", "gleam_erlang", "gleam_stdlib", "justin", "rank", "simplifile", "trie_again"], otp_app = "birdie", source = "hex", outer_checksum = "AE1207210E9CC8F4170BCE3FB3C23932F314C352C3FD1BCEA44CF4BF8CF60F93" },
+  { name = "birl", version = "1.7.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "ranger"], otp_app = "birl", source = "hex", outer_checksum = "5C66647D62BCB11FE327E7A6024907C4A17954EF22865FE0940B54A852446D01" },
+  { name = "directories", version = "1.1.0", build_tools = ["gleam"], requirements = ["envoy", "gleam_stdlib", "platform", "simplifile"], otp_app = "directories", source = "hex", outer_checksum = "BDA521A4EB9EE3A7894F0DC863797878E91FF5C7826F7084B2E731E208BDB076" },
   { name = "edit_distance", version = "2.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "edit_distance", source = "hex", outer_checksum = "A1E485C69A70210223E46E63985FA1008B8B2DDA9848B7897469171B29020C05" },
+  { name = "envoy", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "envoy", source = "hex", outer_checksum = "CFAACCCFC47654F7E8B75E614746ED924C65BD08B1DE21101548AC314A8B6A41" },
+  { name = "exception", version = "2.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "exception", source = "hex", outer_checksum = "F5580D584F16A20B7FCDCABF9E9BE9A2C1F6AC4F9176FA6DD0B63E3B20D450AA" },
   { name = "filepath", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "filepath", source = "hex", outer_checksum = "EFB6FF65C98B2A16378ABC3EE2B14124168C0CE5201553DE652E2644DCFDB594" },
   { name = "glam", version = "2.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "glam", source = "hex", outer_checksum = "66EC3BCD632E51EED029678F8DF419659C1E57B1A93D874C5131FE220DFAD2B2" },
   { name = "glance", version = "0.11.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "glexer"], otp_app = "glance", source = "hex", outer_checksum = "8F3314D27773B7C3B9FB58D8C02C634290422CE531988C0394FA0DF8676B964D" },
   { name = "gleam_community_ansi", version = "1.4.1", build_tools = ["gleam"], requirements = ["gleam_community_colour", "gleam_stdlib"], otp_app = "gleam_community_ansi", source = "hex", outer_checksum = "4CD513FC62523053E62ED7BAC2F36136EC17D6A8942728250A9A00A15E340E4B" },
   { name = "gleam_community_colour", version = "1.4.0", build_tools = ["gleam"], requirements = ["gleam_json", "gleam_stdlib"], otp_app = "gleam_community_colour", source = "hex", outer_checksum = "795964217EBEDB3DA656F5EB8F67D7AD22872EB95182042D3E7AFEF32D3FD2FE" },
+  { name = "gleam_crypto", version = "1.4.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_crypto", source = "hex", outer_checksum = "8AE56026B3E05EBB1F076778478A762E9EB62B31AEEB4285755452F397029D22" },
   { name = "gleam_erlang", version = "0.27.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "DE468F676D71B313C6C8C5334425CFCF827837333F8AB47B64D8A6D7AA40185D" },
   { name = "gleam_http", version = "3.7.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_http", source = "hex", outer_checksum = "EA66440C2269F7CED0F6845E5BD0DB68095775D627FA709A841CA78A398D6D56" },
   { name = "gleam_javascript", version = "0.13.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_javascript", source = "hex", outer_checksum = "F98328FCF573DA6F3A35D7F6CB3F9FF19FD5224CCBA9151FCBEAA0B983AF2F58" },
   { name = "gleam_json", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "thoas"], otp_app = "gleam_json", source = "hex", outer_checksum = "9063D14D25406326C0255BDA0021541E797D8A7A12573D849462CAFED459F6EB" },
+  { name = "gleam_otp", version = "0.12.1", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "BFACC1513410DF5A1617169A9CD7EA334973AC71D860A17574BA7B2EADD89A6F" },
   { name = "gleam_stdlib", version = "0.40.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "86606B75A600BBD05E539EB59FABC6E307EEEA7B1E5865AFB6D980A93BCB2181" },
   { name = "gleeunit", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "F7A7228925D3EE7D0813C922E062BFD6D7E9310F0BEE585D3A42F3307E3CFD13" },
   { name = "glexer", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "glexer", source = "hex", outer_checksum = "BD477AD657C2B637FEF75F2405FAEFFA533F277A74EF1A5E17B55B1178C228FB" },
+  { name = "glisten", version = "6.0.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_otp", "gleam_stdlib", "logging", "telemetry"], otp_app = "glisten", source = "hex", outer_checksum = "912132751031473CB38F454120124FFC96AF6B0EA33D92C9C90DB16327A2A972" },
+  { name = "gramps", version = "2.0.3", build_tools = ["gleam"], requirements = ["gleam_crypto", "gleam_erlang", "gleam_http", "gleam_stdlib"], otp_app = "gramps", source = "hex", outer_checksum = "3CCAA6E081225180D95C79679D383BBF51C8D1FDC1B84DA1DA444F628C373793" },
+  { name = "hpack_erl", version = "0.3.0", build_tools = ["rebar3"], requirements = [], otp_app = "hpack", source = "hex", outer_checksum = "D6137D7079169D8C485C6962DFE261AF5B9EF60FBC557344511C1E65E3D95FB0" },
   { name = "justin", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "justin", source = "hex", outer_checksum = "7FA0C6DB78640C6DC5FBFD59BF3456009F3F8B485BF6825E97E1EB44E9A1E2CD" },
+  { name = "logging", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "logging", source = "hex", outer_checksum = "1098FBF10B54B44C2C7FDF0B01C1253CAFACDACABEFB4B0D027803246753E06D" },
+  { name = "marceau", version = "1.3.0", build_tools = ["gleam"], requirements = [], otp_app = "marceau", source = "hex", outer_checksum = "2D1C27504BEF45005F5DFB18591F8610FB4BFA91744878210BDC464412EC44E9" },
+  { name = "mist", version = "3.0.0", build_tools = ["gleam"], requirements = ["birl", "gleam_erlang", "gleam_http", "gleam_otp", "gleam_stdlib", "glisten", "gramps", "hpack_erl", "logging"], otp_app = "mist", source = "hex", outer_checksum = "CDA1A74E768419235E16886463EC4722EFF4AB3F8D820A76EAD45D7C167D7282" },
+  { name = "platform", version = "1.0.0", build_tools = ["gleam"], requirements = [], otp_app = "platform", source = "hex", outer_checksum = "8339420A95AD89AAC0F82F4C3DB8DD401041742D6C3F46132A8739F6AEB75391" },
   { name = "pprint", version = "1.0.3", build_tools = ["gleam"], requirements = ["glam", "gleam_stdlib"], otp_app = "pprint", source = "hex", outer_checksum = "76BBB92E23D12D954BD452686543F29EDE8EBEBB7FC0ACCBCA66EEF276EC3A06" },
+  { name = "ranger", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "ranger", source = "hex", outer_checksum = "1566C272B1D141B3BBA38B25CB761EF56E312E79EC0E2DFD4D3C19FB0CC1F98C" },
   { name = "rank", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "rank", source = "hex", outer_checksum = "5660E361F0E49CBB714CC57CC4C89C63415D8986F05B2DA0C719D5642FAD91C9" },
   { name = "simplifile", version = "2.2.0", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "0DFABEF7DC7A9E2FF4BB27B108034E60C81BEBFCB7AB816B9E7E18ED4503ACD8" },
+  { name = "telemetry", version = "1.3.0", build_tools = ["rebar3"], requirements = [], otp_app = "telemetry", source = "hex", outer_checksum = "7015FC8919DBE63764F4B4B87A95B7C0996BD539E0D499BE6EC9D7F3875B79E6" },
   { name = "thoas", version = "1.2.1", build_tools = ["rebar3"], requirements = [], otp_app = "thoas", source = "hex", outer_checksum = "E38697EDFFD6E91BD12CEA41B155115282630075C2A727E7A6B2947F5408B86A" },
   { name = "trie_again", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "trie_again", source = "hex", outer_checksum = "5B19176F52B1BD98831B57FDC97BD1F88C8A403D6D8C63471407E78598E27184" },
+  { name = "wisp", version = "1.2.0", build_tools = ["gleam"], requirements = ["directories", "exception", "gleam_crypto", "gleam_erlang", "gleam_http", "gleam_json", "gleam_stdlib", "logging", "marceau", "mist", "simplifile"], otp_app = "wisp", source = "hex", outer_checksum = "F71265D2F1DE11426535A2FA1DA3B11D2FFB783B116DF9496BC8C41983EBADB4" },
 ]
 
 [requirements]
@@ -33,3 +49,4 @@ gleam_stdlib = { version = ">= 0.34.0 and < 2.0.0" }
 gleeunit = { version = ">= 1.0.0 and < 2.0.0" }
 pprint = { version = ">= 1.0.3 and < 2.0.0" }
 simplifile = { version = ">= 2.2.0 and < 3.0.0" }
+wisp = { version = ">= 1.2.0 and < 2.0.0" }

src/glambda.gleam

@@ -1,5 +1,6 @@
 import gleam/bit_array
 import gleam/bool
+import gleam/bytes_builder
 import gleam/dict.{type Dict}
 import gleam/dynamic.{type Dynamic}
 import gleam/http
@@ -12,6 +13,9 @@ import gleam/option.{type Option, None, Some}
 import gleam/regex
 import gleam/result
 import gleam/string
+import gleam/string_builder
+import wisp
+import wisp/internal
 
 pub type JsEvent
 
@@ -203,6 +207,44 @@ pub fn http_handler(
   })
 }
 
+pub fn wisp_handler(
+  handler: fn(wisp.Request, Context) -> Promise(wisp.Response),
+) -> JsHandler {
+  api_gateway_proxy_v2_handler(fn(event, ctx) {
+    event
+    |> create_wisp_request
+    |> handler(ctx)
+    |> promise.map(from_wisp_response)
+  })
+}
+
+fn create_wisp_request(event: ApiGatewayProxyEventV2) -> wisp.Request {
+  let read = case event.body {
+    Some(body) ->
+      internal.Chunk(bit_array.from_string(body), fn(_size) {
+        Ok(internal.ReadingFinished)
+      })
+    None -> internal.ReadingFinished
+  }
+  create_request(event)
+  |> request.set_body(internal.make_connection(
+    fn(_size) { Ok(read) },
+    wisp.random_string(64),
+  ))
+}
+
+fn from_wisp_response(response: wisp.Response) -> ApiGatewayProxyResultV2 {
+  let body = case response.body {
+    wisp.Empty -> <<>>
+    wisp.Bytes(builder) -> bytes_builder.to_bit_array(builder)
+    wisp.Text(builder) ->
+      string_builder.to_string(builder) |> bit_array.from_string
+    wisp.File(_path) -> panic as "not implemented"
+  }
+  response.set_body(response, body)
+  |> create_response
+}
+
 fn create_request(event: ApiGatewayProxyEventV2) -> Request(BitArray) {
   io.debug(event.headers)
   let method =