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josephsmendoza
2024-06-14 02:43:53 -07:00
parent 64fd79c5a3
commit 07c0091bab
5 changed files with 276 additions and 113 deletions
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package-lock.json
Generated
+13
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@@ -7,6 +7,9 @@
"": {
"name": "cloudflare-polly-proxy",
"version": "0.0.0",
"dependencies": {
"aws4fetch": "^1.0.18"
},
"devDependencies": {
"@cloudflare/vitest-pool-workers": "^0.1.0",
"vitest": "1.3.0",
@@ -1000,6 +1003,11 @@
"node": "*"
}
},
"node_modules/aws4fetch": {
"version": "1.0.18",
"resolved": "https://registry.npmjs.org/aws4fetch/-/aws4fetch-1.0.18.tgz",
"integrity": "sha512-3Cf+YaUl07p24MoQ46rFwulAmiyCwH2+1zw1ZyPAX5OtJ34Hh185DwB8y/qRLb6cYYYtSFJ9pthyLc0MD4e8sQ=="
},
"node_modules/balanced-match": {
"version": "1.0.2",
"resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
@@ -3705,6 +3713,11 @@
"integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
"dev": true
},
"aws4fetch": {
"version": "1.0.18",
"resolved": "https://registry.npmjs.org/aws4fetch/-/aws4fetch-1.0.18.tgz",
"integrity": "sha512-3Cf+YaUl07p24MoQ46rFwulAmiyCwH2+1zw1ZyPAX5OtJ34Hh185DwB8y/qRLb6cYYYtSFJ9pthyLc0MD4e8sQ=="
},
"balanced-match": {
"version": "1.0.2",
"resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
package.json
+6 -3
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@@ -9,8 +9,11 @@
"test": "vitest"
},
"devDependencies": {
"wrangler": "^3.0.0",
"@cloudflare/vitest-pool-workers": "^0.1.0",
"vitest": "1.3.0",
"@cloudflare/vitest-pool-workers": "^0.1.0"
"wrangler": "^3.0.0"
},
"dependencies": {
"aws4fetch": "^1.0.18"
}
}
}
src/index.js
+62 -8
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@@ -1,15 +1,69 @@
import jsmodule from '../static/twitch-polly.mjs'
import { AwsClient } from 'aws4fetch'
/**
* Welcome to Cloudflare Workers! This is your first worker.
*
* - Run `npm run dev` in your terminal to start a development server
* - Open a browser tab at http://localhost:8787/ to see your worker in action
* - Run `npm run deploy` to publish your worker
*
* Learn more at https://developers.cloudflare.com/workers/
* create a Response object with control headers set
* @param {BodyInit} body
* @param {ResponseInit} init
*/
function makeResponse(body=undefined,init=undefined){
if(!init){
init={}
}
if(!init.headers){
init.headers={}
}
init.headers['access-control-allow-headers']='authorization,client-id'
init.headers['access-control-allow-origin']='*'
init.headers['access-control-allow-private-network']='true'
init.headers['cache-control']='none'
return new Response(body,init)
}
function awsRequest(accessKeyId,secretAccessKey,host,endpoint,options){
console.log(host+endpoint+options)
const aws=new AwsClient({
accessKeyId:accessKeyId,
secretAccessKey:secretAccessKey,
})
return aws.fetch(host+endpoint+options)
}
export default {
async fetch(request, env, ctx) {
return new Response('Hello World!');
if(request.method==='OPTIONS'){
return makeResponse()
}
const url=new URL(request.url)
if(url.pathname==='/twitch-polly.mjs'){
return makeResponse(jsmodule,{
headers:{
'content-type':'text/javascript'
}
})
}
const validation=await fetch('https://id.twitch.tv/oauth2/validate',
{headers:request.headers})
if(!validation.ok){
return validation
}
if(url.pathname=='/describe_voices'){
url.pathname='/v1/voices'
}
if(url.pathname=='/synthesize_speech'){
url.pathname='/v1/speech'
}
if(url.searchParams.get('LanguageCode')==''){
url.searchParams.delete('LanguageCode')
}
return makeResponse(
await awsRequest(
env.AWS_ACCESS_KEY_ID,
env.AWS_SECRET_ACCESS_KEY,
env.AWS_HOST,
url.pathname,
url.search
).then(response=>response.blob())
)
},
};
static/twitch-polly.mjs
+190
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@@ -0,0 +1,190 @@
/**
Returns the list of voices that are available for use when requesting speech synthesis.
Each voice speaks a specified language, is either male or female, and is identified by an ID, which is the ASCII version of the voice name.
When synthesizing speech ( SynthesizeSpeech ), you provide the voice ID for the voice you want from the list of voices returned by DescribeVoices.
For example, you want your news reader application to read news in a specific language, but giving a user the option to choose the voice.
Using the DescribeVoices operation you can provide the user with a list of available voices to select from.
You can optionally specify a language code to filter the available voices.
For example, if you specify en-US, the operation returns a list of all available US English voices.
This operation requires permissions to perform the polly:DescribeVoices action.
@param {string} Engine Specifies the engine ( standard or neural) used by Amazon Polly when processing input text for speech synthesis.
@param {string} LanguageCode The language identification tag (ISO 639 code for the language name-ISO 3166 country code) for filtering the list of voices returned.
If you don’t specify this optional parameter, all available voices are returned.
@param {boolean} IncludeAdditionalLanguageCodes Boolean value indicating whether to return any bilingual voices that use the specified language as an additional language.
For instance, if you request all languages that use US English (es-US),
and there is an Italian voice that speaks both Italian (it-IT) and US English,
that voice will be included if you specify yes but not if you specify no.
@param {dict} auth_headers your application's authorization headers used when making Twitch API requests
@returns {Promise<Array>} An array of dicts with the following properties:
Gender (string) – Gender of the voice.
Id (string) – Amazon Polly assigned voice ID.
This is the ID that you specify when calling the SynthesizeSpeech operation.
LanguageCode (string) – Language code of the voice.
LanguageName (string) – Human readable name of the language in English.
Name (string) – Name of the voice (for example, Salli, Kendra, etc.).
This provides a human readable voice name that you might display in your application.
AdditionalLanguageCodes (list) – Additional codes for languages available for the specified voice in addition to its default language.
For example, the default language for Aditi is Indian English (en-IN) because it was first used for that language.
Since Aditi is bilingual and fluent in both Indian English and Hindi, this parameter would show the code hi-IN.
SupportedEngines (list) – Specifies which engines ( standard or neural) that are supported by a given voice.
*/
export function DescribeVoices(
auth_headers,
Engine='standard',
LanguageCode='',
IncludeAdditionalLanguageCodes=true){
const url=new URL('/v1/voices',import.meta.url)
url.search=new URLSearchParams({
Engine:Engine,
LanguageCode:LanguageCode,
IncludeAdditionalLanguageCodes:IncludeAdditionalLanguageCodes
})
return fetch(url,{headers:auth_headers})
.then(response=>response.json())
.then(json=>json.Voices)
}
function debug_log(message){
console.debug('synthesize_speech():',message)
}
/**
Synthesizes UTF-8 input, plain text or SSML, to a stream of bytes.
SSML input must be valid, well-formed SSML.
Some alphabets might not be available with all the voices (for example, Cyrillic might not be read at all by English voices) unless phoneme mapping is used.
@param {String} Text
Input text to synthesize. If you specify ssml as the TextType, follow the SSML format for the input text.
Type: String
Required: Yes
@param {String} VoiceId
Voice ID to use for the synthesis. You can get a list of available voice IDs by calling the DescribeVoices operation.
Type: String
Required: Yes
@param {String} TextType
Specifies whether the input text is plain text or SSML. The default value is plain text.
Type: String
Valid Values: ssml | text
Required: No
@param {string} Engine
Specifies the engine (standard or neural) for Amazon Polly to use when processing input text for speech synthesis.
When using NTTS-only voices such as Kevin (en-US), this parameter is required and must be set to neural.
If the engine is not specified, or is set to standard, this will result in an error.
For standard voices, this is not required; the engine parameter defaults to standard.
Type: String
Valid Values: standard | neural
Required: No
@param {string} LanguageCode
Optional language code for the Synthesize Speech request.
This is only necessary if using a bilingual voice, such as Aditi, which can be used for either Indian English (en-IN) or Hindi (hi-IN).
If a bilingual voice is used and no language code is specified, Amazon Polly uses the default language of the bilingual voice.
The default language for any voice is the one returned by the DescribeVoices operation for the LanguageCode parameter.
For example, if no language code is specified, Aditi will use Indian English rather than Hindi.
Type: String
Required: No
@param {string} OutputFormat
The format in which the returned output will be encoded.
For audio stream, this will be mp3, ogg_vorbis, or pcm. For speech marks, this will be json.
When pcm is used, the content returned is audio/pcm in a signed 16-bit, 1 channel (mono), little-endian format.
Type: String
Valid Values: json | mp3 | ogg_vorbis | pcm
Required: No
@param {string} SampleRate
The audio frequency specified in Hz.
The valid values for mp3 and ogg_vorbis are "8000", "16000", "22050", and "24000". The default value is "24000".
Valid values for pcm are "8000" and "16000".
Type: String
Required: No
@param {dict} auth_headers your application's authorization headers used when making Twitch API requests
@returns {Promise<Response>} see OutputFormat parameter
*/
export function SynthesizeSpeech(
auth_headers,
Text,
VoiceId,
TextType='text',
Engine='standard',
LanguageCode='',
OutputFormat='mp3',
SampleRate='24000'){
console.debug('synthesize_speech():',Text)
if(TextType=='ssml'){
const openSpeak=/^< *speak *>/ig
const closeSpeak=/< *\/ *speak *>$/ig
if(!openSpeak.test(Text)){
Text='<speak>'+Text
}
if(!closeSpeak.test(Text)){
Text+='</speak>'
}
// /(?<=< *)($1)(?= *>)/ig
const replacements={
'<lang xml:lang=':/< *lang *=/ig,
'<prosody $1=':/< *(volume|rate|pitch|max-duration) *=/ig,
'</prosody>':/< *\/ *(volume|rate|pitch|max-duration) *>/ig,
'<say-as interpret-as=':/< *(interpret-as|say-as) *=/ig,
'</say-as>':/< *\/ *interpret-as *>/ig,
'<sub alias=':/< *(alias|sub) *=/ig,
'</sub>':/< *\/ *alias *>/ig,
'<w role=':/< *role *=/ig,
'<domain name="news">':/< *news *>/ig,
'</domain>':/< *\/ *news *>/ig,
'effect=$1':/(?<=< *)(drc|whispered)(?= *>)/ig,
'<effect name=':/< *effect *=/ig,
'effect phonation="soft"':/(?<=< *)(soft)(?= *>)/ig,
'effect vocal-tract-length':/(?<=< *)(vocal-tract-length)(?= *=)/ig,
'amazon:$1':/(?<=<.*= *"? *)(VBD|VB|DT|IN|JJ|NN|DEFAULT|SENSE_1)(?=.*>)/ig,
'amazon:$1':/(?<=<.*)(?<!amazon:)(max-duration|breath|auto-breaths|domain|effect)(?=.*>)/ig,
}
for(const key in replacements){
Text=Text.replaceAll(replacements[key],key)
}
console.debug(Text)
}
const url=new URL('/v1/speech',import.meta.url)
url.search=new URLSearchParams({
Text:Text,
VoiceId:VoiceId,
TextType:TextType,
Engine:Engine,
LanguageCode:LanguageCode,
OutputFormat:OutputFormat,
SampleRate:SampleRate
})
return fetch(url,{headers:auth_headers})
}
export default SynthesizeSpeech
wrangler.toml
+5 -102
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@@ -3,106 +3,9 @@ name = "cloudflare-polly-proxy"
main = "src/index.js"
compatibility_date = "2024-06-05"
compatibility_flags = ["nodejs_compat"]
rules = [
{ type = "Data", globs = ["../static/*"], fallthrough = true }
]
# Automatically place your workloads in an optimal location to minimize latency.
# If you are running back-end logic in a Worker, running it closer to your back-end infrastructure
# rather than the end user may result in better performance.
# Docs: https://developers.cloudflare.com/workers/configuration/smart-placement/#smart-placement
# [placement]
# mode = "smart"
# Variable bindings. These are arbitrary, plaintext strings (similar to environment variables)
# Docs:
# - https://developers.cloudflare.com/workers/wrangler/configuration/#environment-variables
# Note: Use secrets to store sensitive data.
# - https://developers.cloudflare.com/workers/configuration/secrets/
# [vars]
# MY_VARIABLE = "production_value"
# Bind the Workers AI model catalog. Run machine learning models, powered by serverless GPUs, on Cloudflare’s global network
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#workers-ai
# [ai]
# binding = "AI"
# Bind an Analytics Engine dataset. Use Analytics Engine to write analytics within your Pages Function.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#analytics-engine-datasets
# [[analytics_engine_datasets]]
# binding = "MY_DATASET"
# Bind a headless browser instance running on Cloudflare's global network.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#browser-rendering
# [browser]
# binding = "MY_BROWSER"
# Bind a D1 database. D1 is Cloudflare’s native serverless SQL database.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#d1-databases
# [[d1_databases]]
# binding = "MY_DB"
# database_name = "my-database"
# database_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
# Bind a dispatch namespace. Use Workers for Platforms to deploy serverless functions programmatically on behalf of your customers.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#dispatch-namespace-bindings-workers-for-platforms
# [[dispatch_namespaces]]
# binding = "MY_DISPATCHER"
# namespace = "my-namespace"
# Bind a Durable Object. Durable objects are a scale-to-zero compute primitive based on the actor model.
# Durable Objects can live for as long as needed. Use these when you need a long-running "server", such as in realtime apps.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#durable-objects
# [[durable_objects.bindings]]
# name = "MY_DURABLE_OBJECT"
# class_name = "MyDurableObject"
# Durable Object migrations.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#migrations
# [[migrations]]
# tag = "v1"
# new_classes = ["MyDurableObject"]
# Bind a Hyperdrive configuration. Use to accelerate access to your existing databases from Cloudflare Workers.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#hyperdrive
# [[hyperdrive]]
# binding = "MY_HYPERDRIVE"
# id = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
# Bind a KV Namespace. Use KV as persistent storage for small key-value pairs.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#kv-namespaces
# [[kv_namespaces]]
# binding = "MY_KV_NAMESPACE"
# id = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
# Bind an mTLS certificate. Use to present a client certificate when communicating with another service.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#mtls-certificates
# [[mtls_certificates]]
# binding = "MY_CERTIFICATE"
# certificate_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
# Bind a Queue producer. Use this binding to schedule an arbitrary task that may be processed later by a Queue consumer.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#queues
# [[queues.producers]]
# binding = "MY_QUEUE"
# queue = "my-queue"
# Bind a Queue consumer. Queue Consumers can retrieve tasks scheduled by Producers to act on them.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#queues
# [[queues.consumers]]
# queue = "my-queue"
# Bind an R2 Bucket. Use R2 to store arbitrarily large blobs of data, such as files.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#r2-buckets
# [[r2_buckets]]
# binding = "MY_BUCKET"
# bucket_name = "my-bucket"
# Bind another Worker service. Use this binding to call another Worker without network overhead.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#service-bindings
# [[services]]
# binding = "MY_SERVICE"
# service = "my-service"
# Bind a Vectorize index. Use to store and query vector embeddings for semantic search, classification and other vector search use-cases.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#vectorize-indexes
# [[vectorize]]
# binding = "MY_INDEX"
# index_name = "my-index"
[vars]
AWS_HOST = 'https://polly.us-east-1.amazonaws.com'