CheckVersionMeetsConstraint returns true if the <version> meets the <constraint>.

CompareVersions returns true if the constraint <version1> compared by <operator> to <version2> returns true, and false otherwise.

ComputeRandomTimeWindow computes a random time window and returns both in the format HHMMSS+ZONE.

ComputeSHA1Hex computes the hexadecimal representation of the SHA1 hash of the given input byte slice <in>, converts it to a string and returns it (length of returned string is 40 characters).

ComputeSHA256Hex computes the hexadecimal representation of the SHA256 hash of the given input byte slice <in>, converts it to a string and returns it.

CreateSHA1Secret takes a username and a password and returns a sha1-schemed credentials pair as string.

DecodeBase64 takes a Base64-encoded string and returns the decoded byte slice.

DecodeCertificate takes a byte slice, decodes it from the PEM format, converts it to an x509.Certificate object, and returns it.

DecodePrivateKey takes a byte slice, decodes it from the PEM format, converts it to an rsa.PrivateKey object, and returns it.

EncodeBase64 takes a byte slice and returns the Base64-encoded string.

EncodeCertificate takes a certificate as a byte slice, encodes it to the PEM format, and returns it as byte slice.

EncodePrivateKey takes a RSA private key object, encodes it to the PEM format, and returns it as a byte slice.

EncodeSHA1 takes a byte slice and returns the sha1-hashed string (base64-encoded).

FindFreePort finds a free port on the host machine and returns it.

FormatMaintenanceTime formats a time object to the maintenance time format.

FuncName takes a function <f> as input and returns its name as a string.

GenerateRandomString generates a random string of the specified length <n>.

GenerateRandomStringFromCharset generates a random string of the specified length <n>.

HashForMap creates a hash value for a map of type map[string]interface{} and returns it.

LookupDNS performs a DNS lookup for the given <domain>.

MergeMaps takes two maps <defaults>, <custom> and merges them.

ParseMaintenanceTime parses the maintenance time and returns it as Time object.

RenderLocalTemplate uses a template <tpl> given as a string and renders it.

RenderTemplate reads the template file in the <templateDir> directory and renders it.

RenderTemplatesWithFuncs does the same as RenderTemplateWithFuncs except that it allows providing multiple template files instead of only exactly one.

RenderTemplateWithFuncs reads the template file in the <templateDir> directory and renders it.

Retry tries a condition function <f> until it returns true or the timeout <maxWaitTime> is reached.

RetryFunc is a convenience wrapper which returns a condition function that fits the requirements of the Retry function.

SHA1 takes a byte slice and returns the sha1-hashed byte slice.

SHA256 takes a byte slice and returns the sha256-hashed byte slice.

TestEmail validates the provided <email> against a regular expression and returns whether it matches.

TimeElapsed takes a <timestamp> and a <duration> checks whether the elapsed time until now is less than the <duration>.

ValueExists returns true or false, depending on whether the given string <value> is part of the given []string list <list>.

WaitUntilDNSNameResolvable is a helper function which takes a <domain> and waits for a maximum of five minutes that the domain name is resolvable by a DNS.