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Enhance ParseDuration with configurable parsing options
Introduce ParseDuration() as the primary and simplest entrypoint for parsing durations
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# Go workspace file | ||
go.work | ||
/haproxytimeout |
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DATE := $(shell date --iso-8601=seconds) | ||
GOVERSION := $(shell go version) | ||
COMMIT := $(shell git describe --tags --abbrev=8 --dirty --always --long) | ||
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PREFIX := main | ||
LDFLAGS := -X '$(PREFIX).buildCommit=$(COMMIT)' -X '$(PREFIX).buildDate=$(DATE)' -X '$(PREFIX).buildGoVersion=$(GOVERSION)' | ||
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build: test | ||
go build -ldflags "$(LDFLAGS)" -o ./haproxytimeout ./cmd/haproxytimeout | ||
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test: | ||
go test ./... | ||
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clean: | ||
$(RM) ./haproxytimeout ./haproxytimeout.test | ||
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benchmark: | ||
go test -bench=. -benchmem -count=5 -benchtime=1s | ||
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.PHONY: build test clean benchmark |
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# parse time durations, with support for days | ||
# Parse time durations, with support for days | ||
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This is a Go library that parses duration strings in a format similar | ||
to time.ParseDuration, with the additional capability of handling | ||
duration strings specifying a number of days ("d"). This functionality | ||
is not available in the built-in time.ParseDuration function. It also | ||
differs by not accepting negative values. This package was primarily | ||
created for validating HAProxy timeout values. | ||
A Go library to parse time duration values similar to | ||
time.ParseDuration, but with extended functionality. In addition to | ||
the standard duration units like "h", "m", and "s", it also supports | ||
days (represented as "d"), which are unavailable in the built-in | ||
time.ParseDuration function. All durations parsed by this package are | ||
ensured to be non-negative and won't overflow the time.Duration value | ||
type. Furthermore, a parsed duration value cannot exceed HAProxy's | ||
maximum timeout. | ||
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The CLI utility `haproxy-timeout-checker` is an example of using the | ||
package. It validates the time duration using `ParseDuration` and also | ||
checks to see if the duration exceeds HAProxy's maximum. | ||
The command line utility `haproxytimeout` is an example of using the | ||
package but also serves to convert human-readable duration values to | ||
microseconds, suitable for a HAProxy configuration file. | ||
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```console | ||
$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "9223372036s" | ||
duration 9223372036000ms exceeds HAProxy's maximum value of 2147483647ms | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "2147483647ms" | ||
2147483647 | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "2147483648ms" | ||
duration 2147483648ms exceeds HAProxy's maximum value of 2147483647ms | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "1d" | ||
86400000 | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "1d 1s" | ||
86401000 | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "1d 3h 10m 20s 100ms 9999us" | ||
97820109 | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go 5000 | ||
5000 | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "5000 999999ms" | ||
5000 999999ms | ||
^ | ||
error: invalid unit order | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "1d 1f" | ||
1d 1f | ||
^ | ||
error: invalid unit | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "1d 1d" | ||
1d 1d | ||
^ | ||
error: invalid unit order | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "1d 5m 1230ms" | ||
86701230 | ||
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# Note: Spaces are optional. | ||
$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "1d5m" | ||
86700000 | ||
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$ go run cmd/haproxy-timeout-checker/haproxy-timeout-checker.go "9223372037s" | ||
9223372037s | ||
^ | ||
error: underflow | ||
$ make | ||
$ ./haproxytimeout -help | ||
``` |
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