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feat: add streaming support #119
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -45,3 +45,4 @@ delete-me | |
| # generated files | ||
| *.rockspec | ||
| src/resty/aws/raw-api | ||
| .DS_Store | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| local tablex = require "pl.tablex" | ||
|
|
||
| describe("stream decoder", function() | ||
| setup(function() | ||
| AWS = require "resty.aws" | ||
| end) | ||
|
|
||
| teardown(function() | ||
| AWS = nil | ||
| package.loaded["resty.aws"] = nil | ||
| end) | ||
|
|
||
|
|
||
| it("decodes multiple messages from a single chunk", function() | ||
| local chunk_in_hex = "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" | ||
| local _STREAM = require("resty.aws.stream") | ||
| local parser, err = _STREAM:new(chunk_in_hex, true) | ||
|
|
||
| if err then | ||
| assert.equal(err, nil) | ||
| return | ||
| end | ||
|
|
||
| local messages = {} | ||
|
|
||
| while true do | ||
| local msg = parser:next_message() | ||
|
|
||
| if not msg then | ||
| break | ||
| end | ||
|
|
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| messages[#messages+1] = msg | ||
| end | ||
|
|
||
| assert.same(messages, { | ||
| { | ||
| body = "{\"role\":\"assistant\"}", | ||
| headers = { | ||
| { | ||
| key = ":event-type", | ||
| value = "messageStart" | ||
| }, | ||
| { | ||
| key = ":content-type", | ||
| value = "application/json" | ||
| }, | ||
| { | ||
| key = ":message-type", | ||
| value = "event" | ||
| } | ||
| } | ||
| }, | ||
| { | ||
| body = "{\"contentBlockIndex\":0,\"delta\":{\"text\":\"Pi (π) is a mathematical constant that represents the circumference-to-diameter ratio of a circle. It's approximately 3.14159.\"}}", | ||
| headers = { | ||
| { | ||
| key = ":event-type", | ||
| value = "contentBlockDelta" | ||
| }, | ||
| { | ||
| key = ":content-type", | ||
| value = "application/json" | ||
| }, | ||
| { | ||
| key = ":message-type", | ||
| value = "event" | ||
| } | ||
| } | ||
| }, | ||
| { | ||
| body = "{\"contentBlockIndex\":0}", | ||
| headers = { | ||
| { | ||
| key = ":event-type", | ||
| value = "contentBlockStop" | ||
| }, | ||
| { | ||
| key = ":content-type", | ||
| value = "application/json" | ||
| }, | ||
| { | ||
| key = ":message-type", | ||
| value = "event" | ||
| } | ||
| } | ||
| }, | ||
| { | ||
| body = "{\"stopReason\":\"end_turn\"}", | ||
| headers = { | ||
| { | ||
| key = ":event-type", | ||
| value = "messageStop" | ||
| }, | ||
| { | ||
| key = ":content-type", | ||
| value = "application/json" | ||
| }, | ||
| { | ||
| key = ":message-type", | ||
| value = "event" | ||
| } | ||
| } | ||
| }, | ||
| { | ||
| body = "{\"metrics\":{\"latencyMs\":1506},\"usage\":{\"inputTokens\":8,\"outputTokens\":39,\"totalTokens\":47}}", | ||
| headers = { | ||
| { | ||
| key = ":event-type", | ||
| value = "metadata" | ||
| }, | ||
| { | ||
| key = ":content-type", | ||
| value = "application/json" | ||
| }, | ||
| { | ||
| key = ":message-type", | ||
| value = "event" | ||
| } | ||
| } | ||
| } | ||
| }) | ||
| end) | ||
| end) |
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Should this be
if response.headers["Content-Type"] == "application/vnd.amazon.eventstream" then?There was a problem hiding this comment.
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I fixed this locally in my test environment and applied other changes from f0ac80e , works like a charm in my lambda streaming case.
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@DiscreteTom I have made changes to the header format in the stream handler, otherwise we are wasting CPU by scanning for "header_key == x"
Can you check your plugin code again?
Minor change, now headers are:
{ body = "...", headers = { key = "value", key2 = "value2", }, }There was a problem hiding this comment.
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No problem. I updated my code locally against this change and it is ok. Gonna push to my PR when this lib is released.