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1 changed files with 57 additions and 58 deletions
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@ -587,70 +587,69 @@ export async function handler(
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}))
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}))
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}
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}
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if (retry.retryCount !== MAX_FAILOVER_RETRIES) {
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// Use fallback provider if max retries reached
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let topPriority = Infinity
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const fallbackProvider = allProviders.find((provider) => provider.id === modelInfo.fallbackProvider)
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const providers = allProviders
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if (retry.retryCount === MAX_FAILOVER_RETRIES) return fallbackProvider
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.filter((provider) => provider.weight !== 0)
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.filter((provider) => !retry.excludeProviders.includes(provider.id))
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.filter((provider) => {
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if (provider.budgetPriority === undefined) return true
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if (!providerBudget) return true
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return providerBudget.qualify(provider.id, provider.budgetPriority)
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})
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.filter((provider) => {
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if (!provider.tpmLimit) return true
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const usage = modelTpmLimits?.[`${provider.id}/${provider.model}`] ?? 0
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return usage < provider.tpmLimit * 1_000_000
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})
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.filter((provider) => {
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if (!provider.tpsGoal) return true
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const tps = modelTpsLimits?.[`${provider.id}/${provider.model}/${provider.tpsGoal}`] ?? {
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qualify: 0,
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unqualify: 0,
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}
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const isLowTps = tps.qualify + tps.unqualify > 10 && tps.qualify < tps.unqualify
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return !isLowTps
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})
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.map((provider) => {
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topPriority = Math.min(topPriority, provider.priority)
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return provider
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})
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.filter((p) => p.priority <= topPriority)
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.flatMap((provider) => Array<typeof provider>(provider.weight).fill(provider))
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// Use the last 4 characters of session ID to select a provider
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let topPriority = Infinity
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let h = 0
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const providers = allProviders
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const l = stickyId.length
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.filter((provider) => provider.weight !== 0)
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for (let i = l - 4; i < l; i++) {
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.filter((provider) => !retry.excludeProviders.includes(provider.id))
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h = (h * 31 + stickyId.charCodeAt(i)) | 0 // 32-bit int
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.filter((provider) => {
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}
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if (provider.budgetPriority === undefined) return true
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const index = (h >>> 0) % providers.length // make unsigned + range 0..length-1
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if (!providerBudget) return true
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const provider = providers[index || 0]
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return providerBudget.qualify(provider.id, provider.budgetPriority)
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})
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// sticky provider does not exist => use selected provider
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.filter((provider) => {
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if (!stickyProviderId) return provider
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if (!provider.tpmLimit) return true
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const stickProvider = allProviders.find((provider) => provider.id === stickyProviderId)
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const usage = modelTpmLimits?.[`${provider.id}/${provider.model}`] ?? 0
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if (!stickProvider) return provider
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return usage < provider.tpmLimit * 1_000_000
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})
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const preferBudgetProvider =
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.filter((provider) => {
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provider.budgetPriority !== undefined && providerBudget?.prefer(provider.id, provider.budgetPriority)
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if (!provider.tpsGoal) return true
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const preferTpsProvider = (() => {
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if (!provider.tpsGoal) return false
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const tps = modelTpsLimits?.[`${provider.id}/${provider.model}/${provider.tpsGoal}`] ?? {
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const tps = modelTpsLimits?.[`${provider.id}/${provider.model}/${provider.tpsGoal}`] ?? {
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qualify: 0,
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qualify: 0,
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unqualify: 0,
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unqualify: 0,
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}
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}
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return tps.qualify > tps.unqualify * 3
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const isLowTps = tps.qualify + tps.unqualify > 10 && tps.qualify < tps.unqualify
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})()
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return !isLowTps
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})
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.map((provider) => {
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topPriority = Math.min(topPriority, provider.priority)
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return provider
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})
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.filter((p) => p.priority <= topPriority)
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.flatMap((provider) => Array<typeof provider>(provider.weight).fill(provider))
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if (!preferBudgetProvider && !preferTpsProvider) return stickProvider
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// Use the last 4 characters of session ID to select a provider
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let h = 0
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return provider
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const l = stickyId.length
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for (let i = l - 4; i < l; i++) {
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h = (h * 31 + stickyId.charCodeAt(i)) | 0 // 32-bit int
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}
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}
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const index = (h >>> 0) % providers.length // make unsigned + range 0..length-1
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const provider = providers[index || 0] ?? fallbackProvider
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// fallback provider
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// sticky provider does not exist => use selected provider
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return allProviders.find((provider) => provider.id === modelInfo.fallbackProvider)
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if (!stickyProviderId) return provider
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const stickProvider = allProviders.find((provider) => provider.id === stickyProviderId)
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if (!stickProvider) return provider
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const preferBudgetProvider =
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provider.budgetPriority !== undefined && providerBudget?.prefer(provider.id, provider.budgetPriority)
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const preferTpsProvider = (() => {
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if (!provider.tpsGoal) return false
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const tps = modelTpsLimits?.[`${provider.id}/${provider.model}/${provider.tpsGoal}`] ?? {
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qualify: 0,
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unqualify: 0,
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}
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return tps.qualify > tps.unqualify * 3
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})()
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if (!preferBudgetProvider && !preferTpsProvider) return stickProvider
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return provider
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})()
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})()
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if (!modelProvider) throw new ModelError(t("zen.api.error.noProviderAvailable"))
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if (!modelProvider) throw new ModelError(t("zen.api.error.noProviderAvailable"))
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