70 lines
1.2 KiB
CUE
70 lines
1.2 KiB
CUE
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// Random generation utilities.
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//
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// Example:
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// ```
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// str: random.#String & {
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// seed: "str"
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// length: 10
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// }
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// ```
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package random
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import (
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"strconv"
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"dagger.io/alpine"
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"dagger.io/dagger/op"
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)
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// Generate a random string
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#String: {
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// Seed of the random string to generate.
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// When using the same `seed`, the same random string will be generated
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// because of caching.
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// FIXME: this is necessary because of https://github.com/dagger/dagger/issues/591
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seed: string @dagger(input)
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// length of the string
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length: *12 | number @dagger(input)
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// generated random string
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out: {
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string
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#up: [
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op.#Load & {from: alpine.#Image & {
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package: python3: "=~3.8"
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}},
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op.#WriteFile & {
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dest: "/entrypoint.py"
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content: #"""
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import random
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import string
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import os
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length = int(os.environ['LENGTH'])
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letters = string.ascii_lowercase
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print ( ''.join(random.choice(letters) for i in range(length)) )
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"""#
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},
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op.#Exec & {
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args: ["sh", "-c", #"""
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printf "$(python3 /entrypoint.py)" > /rand
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"""#,
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]
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env: LENGTH: strconv.FormatInt(length, 10)
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env: SEED: seed
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always: true
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},
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op.#Export & {
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source: "/rand"
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},
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]
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} @dagger(output)
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}
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