mirror of
https://github.com/hanzoai/volume.git
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zeekay
b61441f7d7
A fork of Rancher's local-path-provisioner at v0.0.36. The behaviour is unchanged and deliberately so — a directory on the node a pod lands on is the right thing for a disk. What changes is identity. The provisioner answers to hanzo.ai/volume rather than rancher.io/local-path. That is not branding: two provisioners sharing one name race for the same claims, and a stock k3s carries the upstream one, so a cluster running both would settle our storage by chance. Data lives at /var/lib/hanzo/volume, so reading a Hanzo cluster does not mean learning another vendor's directory. Apache-2.0 as published, unaltered, with Rancher's attribution in NOTICE. The README says what this is not: durability. A volume here dies with its node. That is hanzoai/replicate's question, one layer up, and keeping the two apart is what lets the disk stay this simple.
75 lines
2.5 KiB
Go
75 lines
2.5 KiB
Go
package restful
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// Copyright 2013 Ernest Micklei. All rights reserved.
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// Use of this source code is governed by a license
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// that can be found in the LICENSE file.
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import (
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"bytes"
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"fmt"
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"regexp"
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"strings"
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)
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// PathExpression holds a compiled path expression (RegExp) needed to match against
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// Http request paths and to extract path parameter values.
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type pathExpression struct {
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LiteralCount int // the number of literal characters (means those not resulting from template variable substitution)
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VarNames []string // the names of parameters (enclosed by {}) in the path
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VarCount int // the number of named parameters (enclosed by {}) in the path
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Matcher *regexp.Regexp
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Source string // Path as defined by the RouteBuilder
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tokens []string
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}
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// NewPathExpression creates a PathExpression from the input URL path.
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// Returns an error if the path is invalid.
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func newPathExpression(path string) (*pathExpression, error) {
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expression, literalCount, varNames, varCount, tokens := templateToRegularExpression(path)
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compiled, err := regexp.Compile(expression)
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if err != nil {
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return nil, err
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}
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return &pathExpression{literalCount, varNames, varCount, compiled, expression, tokens}, nil
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}
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// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-370003.7.3
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func templateToRegularExpression(template string) (expression string, literalCount int, varNames []string, varCount int, tokens []string) {
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var buffer bytes.Buffer
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buffer.WriteString("^")
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//tokens = strings.Split(template, "/")
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tokens = tokenizePath(template)
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for _, each := range tokens {
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if each == "" {
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continue
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}
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buffer.WriteString("/")
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if strings.HasPrefix(each, "{") {
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// check for regular expression in variable
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colon := strings.Index(each, ":")
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var varName string
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if colon != -1 {
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// extract expression
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varName = strings.TrimSpace(each[1:colon])
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paramExpr := strings.TrimSpace(each[colon+1 : len(each)-1])
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if paramExpr == "*" { // special case
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buffer.WriteString("(.*)")
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} else {
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buffer.WriteString(fmt.Sprintf("(%s)", paramExpr)) // between colon and closing moustache
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}
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} else {
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// plain var
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varName = strings.TrimSpace(each[1 : len(each)-1])
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buffer.WriteString("([^/]+?)")
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}
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varNames = append(varNames, varName)
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varCount += 1
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} else {
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literalCount += len(each)
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encoded := each // TODO URI encode
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buffer.WriteString(regexp.QuoteMeta(encoded))
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}
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}
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return strings.TrimRight(buffer.String(), "/") + "(/.*)?$", literalCount, varNames, varCount, tokens
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}
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