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refactor: update billing calculations to use quota per unit

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- Adjusted billing calculations in tests and core logic to incorporate a new QuotaPerUnit field.
- Modified estimated quota calculations to reflect changes in tiered billing logic.
- Updated related tests to ensure accuracy with the new quota calculations.
- Enhanced dynamic pricing components to align with updated billing expressions.
This commit is contained in:
CaIon
2026-03-16 20:11:55 +08:00
parent f0589cc478
commit f6c0852da9
10 changed files with 160 additions and 132 deletions
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pkg/billingexpr/billingexpr_test.go
+75 -59
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@@ -313,9 +313,10 @@ func TestComputeTieredQuota_Basic(t *testing.T) {
GroupRatio: 1.0,
EstimatedPromptTokens: 100000,
EstimatedCompletionTokens: 5000,
EstimatedQuotaBeforeGroup: 100000*1.5 + 5000*7.5,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound(100000*1.5 + 5000*7.5),
EstimatedQuotaBeforeGroup: (100000*1.5 + 5000*7.5) / 1_000_000 * 500_000,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound((100000*1.5 + 5000*7.5) / 1_000_000 * 500_000),
EstimatedTier: "standard",
QuotaPerUnit: 500_000,
}
result, err := billingexpr.ComputeTieredQuota(snap, billingexpr.TokenParams{P: 300000, C: 10000})
@@ -323,7 +324,7 @@ func TestComputeTieredQuota_Basic(t *testing.T) {
t.Fatal(err)
}
wantBefore := 300000*3.0 + 10000*11.25
wantBefore := (300000*3.0 + 10000*11.25) / 1_000_000 * 500_000
if math.Abs(result.ActualQuotaBeforeGroup-wantBefore) > 1e-6 {
t.Errorf("before group: got %f, want %f", result.ActualQuotaBeforeGroup, wantBefore)
}
@@ -343,9 +344,10 @@ func TestComputeTieredQuota_SameTier(t *testing.T) {
GroupRatio: 1.5,
EstimatedPromptTokens: 50000,
EstimatedCompletionTokens: 1000,
EstimatedQuotaBeforeGroup: 50000*1.5 + 1000*7.5,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound((50000*1.5 + 1000*7.5) * 1.5),
EstimatedQuotaBeforeGroup: (50000*1.5 + 1000*7.5) / 1_000_000 * 500_000,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound((50000*1.5 + 1000*7.5) / 1_000_000 * 500_000 * 1.5),
EstimatedTier: "standard",
QuotaPerUnit: 500_000,
}
result, err := billingexpr.ComputeTieredQuota(snap, billingexpr.TokenParams{P: 80000, C: 2000})
@@ -353,7 +355,7 @@ func TestComputeTieredQuota_SameTier(t *testing.T) {
t.Fatal(err)
}
wantBefore := 80000*1.5 + 2000*7.5
wantBefore := (80000*1.5 + 2000*7.5) / 1_000_000 * 500_000
wantAfter := billingexpr.QuotaRound(wantBefore * 1.5)
if result.ActualQuotaAfterGroup != wantAfter {
t.Errorf("after group: got %d, want %d", result.ActualQuotaAfterGroup, wantAfter)
@@ -534,9 +536,10 @@ func TestComputeTieredQuota_WithCache(t *testing.T) {
GroupRatio: 1.0,
EstimatedPromptTokens: 100000,
EstimatedCompletionTokens: 5000,
EstimatedQuotaBeforeGroup: 100000*1.5 + 5000*7.5,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound(100000*1.5 + 5000*7.5),
EstimatedQuotaBeforeGroup: (100000*1.5 + 5000*7.5) / 1_000_000 * 500_000,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound((100000*1.5 + 5000*7.5) / 1_000_000 * 500_000),
EstimatedTier: "standard",
QuotaPerUnit: 500_000,
}
params := billingexpr.TokenParams{P: 100000, C: 5000, CR: 50000, CC: 10000}
@@ -545,7 +548,7 @@ func TestComputeTieredQuota_WithCache(t *testing.T) {
t.Fatal(err)
}
wantBefore := 100000*1.5 + 5000*7.5 + 50000*0.15 + 10000*1.875
wantBefore := (100000*1.5 + 5000*7.5 + 50000*0.15 + 10000*1.875) / 1_000_000 * 500_000
if math.Abs(result.ActualQuotaBeforeGroup-wantBefore) > 1e-6 {
t.Errorf("before group: got %f, want %f", result.ActualQuotaBeforeGroup, wantBefore)
}
@@ -565,9 +568,10 @@ func TestComputeTieredQuota_WithCacheCrossTier(t *testing.T) {
GroupRatio: 2.0,
EstimatedPromptTokens: 100000,
EstimatedCompletionTokens: 5000,
EstimatedQuotaBeforeGroup: 100000*1.5 + 5000*7.5,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound((100000*1.5 + 5000*7.5) * 2.0),
EstimatedQuotaBeforeGroup: (100000*1.5 + 5000*7.5) / 1_000_000 * 500_000,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound((100000*1.5 + 5000*7.5) / 1_000_000 * 500_000 * 2.0),
EstimatedTier: "standard",
QuotaPerUnit: 500_000,
}
params := billingexpr.TokenParams{P: 300000, C: 10000, CR: 50000, CC: 10000}
@@ -576,7 +580,7 @@ func TestComputeTieredQuota_WithCacheCrossTier(t *testing.T) {
t.Fatal(err)
}
wantBefore := 300000*3.0 + 10000*11.25 + 50000*0.3 + 10000*3.75
wantBefore := (300000*3.0 + 10000*11.25 + 50000*0.3 + 10000*3.75) / 1_000_000 * 500_000
wantAfter := billingexpr.QuotaRound(wantBefore * 2.0)
if math.Abs(result.ActualQuotaBeforeGroup-wantBefore) > 1e-6 {
t.Errorf("before group: got %f, want %f", result.ActualQuotaBeforeGroup, wantBefore)
@@ -646,6 +650,7 @@ func TestFuzz_SettlementConsistency(t *testing.T) {
estCost, estTrace, _ := billingexpr.RunExpr(claudeWithCacheExpr, estParams)
const qpu = 500_000.0
snap := &billingexpr.BillingSnapshot{
BillingMode: "tiered_expr",
ExprString: claudeWithCacheExpr,
@@ -653,9 +658,10 @@ func TestFuzz_SettlementConsistency(t *testing.T) {
GroupRatio: groupRatio,
EstimatedPromptTokens: int(estParams.P),
EstimatedCompletionTokens: int(estParams.C),
EstimatedQuotaBeforeGroup: estCost,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound(estCost * groupRatio),
EstimatedQuotaBeforeGroup: estCost / 1_000_000 * qpu,
EstimatedQuotaAfterGroup: billingexpr.QuotaRound(estCost / 1_000_000 * qpu * groupRatio),
EstimatedTier: estTrace.MatchedTier,
QuotaPerUnit: qpu,
}
result, err := billingexpr.ComputeTieredQuota(snap, actParams)
@@ -664,7 +670,7 @@ func TestFuzz_SettlementConsistency(t *testing.T) {
}
directCost, _, _ := billingexpr.RunExpr(claudeWithCacheExpr, actParams)
directQuota := billingexpr.QuotaRound(directCost * groupRatio)
directQuota := billingexpr.QuotaRound(directCost / 1_000_000 * qpu * groupRatio)
if result.ActualQuotaAfterGroup != directQuota {
t.Errorf("iter %d: settlement %d != direct %d", i, result.ActualQuotaAfterGroup, directQuota)
@@ -679,21 +685,23 @@ func TestFuzz_SettlementConsistency(t *testing.T) {
func TestComputeTieredQuota_BasicSettlement(t *testing.T) {
exprStr := `tier("default", p + c)`
snap := &billingexpr.BillingSnapshot{
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
QuotaPerUnit: 500_000,
}
result, err := billingexpr.ComputeTieredQuota(snap, billingexpr.TokenParams{P: 3000, C: 2000})
if err != nil {
t.Fatal(err)
}
if math.Abs(result.ActualQuotaBeforeGroup-5000) > 1e-6 {
t.Errorf("before group = %f, want 5000", result.ActualQuotaBeforeGroup)
// exprOutput = 5000; quota = 5000 / 1M * 500K = 2500
if math.Abs(result.ActualQuotaBeforeGroup-2500) > 1e-6 {
t.Errorf("before group = %f, want 2500", result.ActualQuotaBeforeGroup)
}
if result.ActualQuotaAfterGroup != 5000 {
t.Errorf("after group = %d, want 5000", result.ActualQuotaAfterGroup)
if result.ActualQuotaAfterGroup != 2500 {
t.Errorf("after group = %d, want 2500", result.ActualQuotaAfterGroup)
}
if result.MatchedTier != "default" {
t.Errorf("tier = %q, want default", result.MatchedTier)
@@ -703,29 +711,31 @@ func TestComputeTieredQuota_BasicSettlement(t *testing.T) {
func TestComputeTieredQuota_WithGroupRatio(t *testing.T) {
exprStr := `tier("default", p + c)`
snap := &billingexpr.BillingSnapshot{
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 2.0,
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 2.0,
QuotaPerUnit: 500_000,
}
result, err := billingexpr.ComputeTieredQuota(snap, billingexpr.TokenParams{P: 1000, C: 500})
if err != nil {
t.Fatal(err)
}
// cost = 1500, after group = round(1500 * 2.0) = 3000
if result.ActualQuotaAfterGroup != 3000 {
t.Errorf("after group = %d, want 3000", result.ActualQuotaAfterGroup)
// exprOutput = 1500; quotaBeforeGroup = 750; afterGroup = round(750 * 2.0) = 1500
if result.ActualQuotaAfterGroup != 1500 {
t.Errorf("after group = %d, want 1500", result.ActualQuotaAfterGroup)
}
}
func TestComputeTieredQuota_ZeroTokens(t *testing.T) {
exprStr := `tier("default", p * 2 + c * 10)`
snap := &billingexpr.BillingSnapshot{
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
QuotaPerUnit: 500_000,
}
result, err := billingexpr.ComputeTieredQuota(snap, billingexpr.TokenParams{})
@@ -738,40 +748,42 @@ func TestComputeTieredQuota_ZeroTokens(t *testing.T) {
}
func TestComputeTieredQuota_RoundingEdge(t *testing.T) {
exprStr := `tier("default", p * 0.5)` // 3 * 0.5 = 1.5 -> round to 2
exprStr := `tier("default", p * 0.5)` // 3 * 0.5 = 1.5 (expr); 1.5 / 1M * 500K = 0.75; round(0.75) = 1
snap := &billingexpr.BillingSnapshot{
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
QuotaPerUnit: 500_000,
}
result, err := billingexpr.ComputeTieredQuota(snap, billingexpr.TokenParams{P: 3})
if err != nil {
t.Fatal(err)
}
// 3 * 0.5 = 1.5, round(1.5) = 2
if result.ActualQuotaAfterGroup != 2 {
t.Errorf("after group = %d, want 2 (round 1.5 up)", result.ActualQuotaAfterGroup)
// 3 * 0.5 = 1.5 (expr); quota = 1.5 / 1M * 500K = 0.75; round(0.75) = 1
if result.ActualQuotaAfterGroup != 1 {
t.Errorf("after group = %d, want 1 (round 0.75 up)", result.ActualQuotaAfterGroup)
}
}
func TestComputeTieredQuota_RoundingEdgeDown(t *testing.T) {
exprStr := `tier("default", p * 0.4)` // 3 * 0.4 = 1.2 -> round to 1
exprStr := `tier("default", p * 0.4)` // 3 * 0.4 = 1.2 (expr); 1.2 / 1M * 500K = 0.6; round(0.6) = 1
snap := &billingexpr.BillingSnapshot{
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
BillingMode: "tiered_expr",
ExprString: exprStr,
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
QuotaPerUnit: 500_000,
}
result, err := billingexpr.ComputeTieredQuota(snap, billingexpr.TokenParams{P: 3})
if err != nil {
t.Fatal(err)
}
// 3 * 0.4 = 1.2, round(1.2) = 1
// 3 * 0.4 = 1.2 (expr); quota = 1.2 / 1M * 500K = 0.6; round(0.6) = 1
if result.ActualQuotaAfterGroup != 1 {
t.Errorf("after group = %d, want 1 (round 1.2 down)", result.ActualQuotaAfterGroup)
t.Errorf("after group = %d, want 1 (round 0.6 up)", result.ActualQuotaAfterGroup)
}
}
@@ -783,6 +795,7 @@ func TestComputeTieredQuotaWithRequest_ProbeAffectsQuota(t *testing.T) {
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
EstimatedTier: "normal",
QuotaPerUnit: 500_000,
}
// Without request: normal tier
@@ -790,8 +803,9 @@ func TestComputeTieredQuotaWithRequest_ProbeAffectsQuota(t *testing.T) {
if err != nil {
t.Fatal(err)
}
if r1.ActualQuotaAfterGroup != 2000 {
t.Errorf("normal = %d, want 2000", r1.ActualQuotaAfterGroup)
// normal: p*2 = 2000; quota = 2000 / 1M * 500K = 1000
if r1.ActualQuotaAfterGroup != 1000 {
t.Errorf("normal = %d, want 1000", r1.ActualQuotaAfterGroup)
}
// With request: fast tier
@@ -801,8 +815,9 @@ func TestComputeTieredQuotaWithRequest_ProbeAffectsQuota(t *testing.T) {
if err != nil {
t.Fatal(err)
}
if r2.ActualQuotaAfterGroup != 4000 {
t.Errorf("fast = %d, want 4000", r2.ActualQuotaAfterGroup)
// fast: p*4 = 4000; quota = 4000 / 1M * 500K = 2000
if r2.ActualQuotaAfterGroup != 2000 {
t.Errorf("fast = %d, want 2000", r2.ActualQuotaAfterGroup)
}
if !r2.CrossedTier {
t.Error("expected CrossedTier = true when probe changes tier")
@@ -817,9 +832,10 @@ func TestComputeTieredQuota_BoundaryTierCrossing(t *testing.T) {
ExprHash: billingexpr.ExprHashString(exprStr),
GroupRatio: 1.0,
EstimatedTier: "small",
QuotaPerUnit: 500_000,
}
// At boundary
// At boundary: small, p*1 = 100000; quota = 100000 / 1M * 500K = 50000
r1, err := billingexpr.ComputeTieredQuota(snap, billingexpr.TokenParams{P: 100000})
if err != nil {
t.Fatal(err)
@@ -827,11 +843,11 @@ func TestComputeTieredQuota_BoundaryTierCrossing(t *testing.T) {
if r1.MatchedTier != "small" {
t.Errorf("at boundary: tier = %s, want small", r1.MatchedTier)
}
if r1.ActualQuotaAfterGroup != 100000 {
t.Errorf("at boundary: quota = %d, want 100000", r1.ActualQuotaAfterGroup)
if r1.ActualQuotaAfterGroup != 50000 {
t.Errorf("at boundary: quota = %d, want 50000", r1.ActualQuotaAfterGroup)
}
// Past boundary
// Past boundary: large, p*2 = 200002; quota = 200002 / 1M * 500K = 100001
r2, err := billingexpr.ComputeTieredQuota(snap, billingexpr.TokenParams{P: 100001})
if err != nil {
t.Fatal(err)
@@ -839,8 +855,8 @@ func TestComputeTieredQuota_BoundaryTierCrossing(t *testing.T) {
if r2.MatchedTier != "large" {
t.Errorf("past boundary: tier = %s, want large", r2.MatchedTier)
}
if r2.ActualQuotaAfterGroup != 200002 {
t.Errorf("past boundary: quota = %d, want 200002", r2.ActualQuotaAfterGroup)
if r2.ActualQuotaAfterGroup != 100001 {
t.Errorf("past boundary: quota = %d, want 100001", r2.ActualQuotaAfterGroup)
}
if !r2.CrossedTier {
t.Error("expected CrossedTier = true")