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Merge pull request #627 from freak12techno/add-time-template-helpers
feat: add time template helpers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| // Copyright 2024 The Prometheus Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package templates | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "math" | ||
| "strconv" | ||
| "time" | ||
| ) | ||
|
|
||
| func convertToFloat(i interface{}) (float64, error) { | ||
| switch v := i.(type) { | ||
| case float64: | ||
| return v, nil | ||
| case string: | ||
| return strconv.ParseFloat(v, 64) | ||
| case int: | ||
| return float64(v), nil | ||
| case uint: | ||
| return float64(v), nil | ||
| case int64: | ||
| return float64(v), nil | ||
| case uint64: | ||
| return float64(v), nil | ||
| case time.Duration: | ||
| return v.Seconds(), nil | ||
| default: | ||
| return 0, fmt.Errorf("can't convert %T to float", v) | ||
| } | ||
| } | ||
|
|
||
| func HumanizeDuration(i interface{}) (string, error) { | ||
| v, err := convertToFloat(i) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| if math.IsNaN(v) || math.IsInf(v, 0) { | ||
| return fmt.Sprintf("%.4g", v), nil | ||
| } | ||
| if v == 0 { | ||
| return fmt.Sprintf("%.4gs", v), nil | ||
| } | ||
| if math.Abs(v) >= 1 { | ||
| sign := "" | ||
| if v < 0 { | ||
| sign = "-" | ||
| v = -v | ||
| } | ||
| duration := int64(v) | ||
| seconds := duration % 60 | ||
| minutes := (duration / 60) % 60 | ||
| hours := (duration / 60 / 60) % 24 | ||
| days := duration / 60 / 60 / 24 | ||
| // For days to minutes, we display seconds as an integer. | ||
| if days != 0 { | ||
| return fmt.Sprintf("%s%dd %dh %dm %ds", sign, days, hours, minutes, seconds), nil | ||
| } | ||
| if hours != 0 { | ||
| return fmt.Sprintf("%s%dh %dm %ds", sign, hours, minutes, seconds), nil | ||
| } | ||
| if minutes != 0 { | ||
| return fmt.Sprintf("%s%dm %ds", sign, minutes, seconds), nil | ||
| } | ||
| // For seconds, we display 4 significant digits. | ||
| return fmt.Sprintf("%s%.4gs", sign, v), nil | ||
| } | ||
| prefix := "" | ||
| for _, p := range []string{"m", "u", "n", "p", "f", "a", "z", "y"} { | ||
| if math.Abs(v) >= 1 { | ||
| break | ||
| } | ||
| prefix = p | ||
| v *= 1000 | ||
| } | ||
| return fmt.Sprintf("%.4g%ss", v, prefix), nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,141 @@ | ||
| // Copyright 2024 The Prometheus Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package templates | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func TestHumanizeDurationSecondsFloat64(t *testing.T) { | ||
| tc := []struct { | ||
| name string | ||
| input float64 | ||
| expected string | ||
| }{ | ||
| {name: "zero", input: 0, expected: "0s"}, | ||
| {name: "one second", input: 1, expected: "1s"}, | ||
| {name: "one minute", input: 60, expected: "1m 0s"}, | ||
| {name: "one hour", input: 3600, expected: "1h 0m 0s"}, | ||
| {name: "one day", input: 86400, expected: "1d 0h 0m 0s"}, | ||
| {name: "one day and one hour", input: 86400 + 3600, expected: "1d 1h 0m 0s"}, | ||
| {name: "negative duration", input: -(86400*2 + 3600*3 + 60*4 + 5), expected: "-2d 3h 4m 5s"}, | ||
| {name: "using a float", input: 899.99, expected: "14m 59s"}, | ||
| } | ||
|
|
||
| for _, tt := range tc { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| result, err := HumanizeDuration(tt.input) | ||
| require.NoError(t, err) | ||
| require.Equal(t, tt.expected, result) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func TestHumanizeDurationSubsecondAndFractionalSecondsFloat64(t *testing.T) { | ||
| tc := []struct { | ||
| name string | ||
| input float64 | ||
| expected string | ||
| }{ | ||
| {name: "millseconds", input: .1, expected: "100ms"}, | ||
| {name: "nanoseconds", input: .0001, expected: "100us"}, | ||
| {name: "milliseconds + nanoseconds", input: .12345, expected: "123.5ms"}, | ||
| {name: "minute + millisecond", input: 60.1, expected: "1m 0s"}, | ||
| {name: "minute + milliseconds", input: 60.5, expected: "1m 0s"}, | ||
| {name: "second + milliseconds", input: 1.2345, expected: "1.234s"}, | ||
| {name: "second + milliseconds rounded", input: 12.345, expected: "12.35s"}, | ||
| } | ||
|
|
||
| for _, tt := range tc { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| result, err := HumanizeDuration(tt.input) | ||
| require.NoError(t, err) | ||
| require.Equal(t, tt.expected, result) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func TestHumanizeDurationErrorString(t *testing.T) { | ||
| _, err := HumanizeDuration("one") | ||
| require.Error(t, err) | ||
| } | ||
|
|
||
| func TestHumanizeDurationSecondsString(t *testing.T) { | ||
| tc := []struct { | ||
| name string | ||
| input string | ||
| expected string | ||
| }{ | ||
| {name: "zero", input: "0", expected: "0s"}, | ||
| {name: "second", input: "1", expected: "1s"}, | ||
| {name: "minute", input: "60", expected: "1m 0s"}, | ||
| {name: "hour", input: "3600", expected: "1h 0m 0s"}, | ||
| {name: "day", input: "86400", expected: "1d 0h 0m 0s"}, | ||
| } | ||
|
|
||
| for _, tt := range tc { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| result, err := HumanizeDuration(tt.input) | ||
| require.NoError(t, err) | ||
| require.Equal(t, tt.expected, result) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func TestHumanizeDurationSubsecondAndFractionalSecondsString(t *testing.T) { | ||
| tc := []struct { | ||
| name string | ||
| input string | ||
| expected string | ||
| }{ | ||
| {name: "millseconds", input: ".1", expected: "100ms"}, | ||
| {name: "nanoseconds", input: ".0001", expected: "100us"}, | ||
| {name: "milliseconds + nanoseconds", input: ".12345", expected: "123.5ms"}, | ||
| {name: "minute + millisecond", input: "60.1", expected: "1m 0s"}, | ||
| {name: "minute + milliseconds", input: "60.5", expected: "1m 0s"}, | ||
| {name: "second + milliseconds", input: "1.2345", expected: "1.234s"}, | ||
| {name: "second + milliseconds rounded", input: "12.345", expected: "12.35s"}, | ||
| } | ||
|
|
||
| for _, tt := range tc { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| result, err := HumanizeDuration(tt.input) | ||
| require.NoError(t, err) | ||
| require.Equal(t, tt.expected, result) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func TestHumanizeDurationSecondsInt(t *testing.T) { | ||
| tc := []struct { | ||
| name string | ||
| input int | ||
| expected string | ||
| }{ | ||
| {name: "zero", input: 0, expected: "0s"}, | ||
| {name: "negative", input: -1, expected: "-1s"}, | ||
| {name: "second", input: 1, expected: "1s"}, | ||
| {name: "days", input: 1234567, expected: "14d 6h 56m 7s"}, | ||
| } | ||
|
|
||
| for _, tt := range tc { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| result, err := HumanizeDuration(tt.input) | ||
| require.NoError(t, err) | ||
| require.Equal(t, tt.expected, result) | ||
| }) | ||
| } | ||
| } |