Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Signed-off-by: Paul Grant <paulfgrant01@gmail.com>
- Loading branch information
1 parent
994ec61
commit d772c10
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| package httpjson | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strconv" | ||
| "strings" | ||
|
|
||
| "github.com/antchfx/jsonquery" | ||
| "github.com/helmfile/vals/pkg/api" | ||
| "github.com/helmfile/vals/pkg/log" | ||
| ) | ||
|
|
||
| type provider struct { | ||
| // Keeping track of httpjson services since we need a service per url | ||
| protocol string | ||
| log *log.Logger | ||
| docs map[string]*jsonquery.Node | ||
| floatAsInt bool | ||
| } | ||
|
|
||
| func New(l *log.Logger, cfg api.StaticConfig) *provider { | ||
| p := &provider{ | ||
| log: l, | ||
| } | ||
|
|
||
| // Should the protocol be insecure i.e. http | ||
| insecureArg := cfg.String("insecure") | ||
| p.protocol = "https" | ||
| if insecureArg == "true" { | ||
| p.protocol = "http" | ||
| } | ||
|
|
||
| // By default JSON will return large integers as float64 | ||
| floatAsIntArg := cfg.String("floatAsInt") | ||
| p.floatAsInt = false | ||
| if floatAsIntArg == "true" { | ||
| p.floatAsInt = true | ||
| } | ||
|
|
||
| // Initialize docs map to store the json object for use multiple times | ||
| if len(p.docs) == 0 { | ||
| p.docs = make(map[string]*jsonquery.Node) | ||
| } | ||
|
|
||
| return p | ||
| } | ||
|
|
||
| func GetXpathFromUri(uri string) (xpath string, err error) { | ||
| found := strings.Split(uri, "mode=singleparam#")[1] | ||
| found = strings.Split(found, "&")[0] | ||
| xpath = strings.TrimPrefix(found, "/") | ||
|
|
||
| return xpath, nil | ||
| } | ||
|
|
||
| func getUrlFromUri(uri string, protocol string) (string, error) { | ||
| // Grab url from uri | ||
| uriParts := strings.Split(uri, "?") | ||
| if len(uriParts) < 2 { | ||
| return "", fmt.Errorf("error getting url from uri: %v, ensure xpath singleparam is set as a query parameter", uri) | ||
| } | ||
| url := strings.Replace(uriParts[0], "httpjson", protocol, 1) | ||
|
|
||
| return url, nil | ||
| } | ||
|
|
||
| func (p *provider) GetJsonDoc(url string) error { | ||
| if _, ok := p.docs[url]; !ok { | ||
| doc, err := jsonquery.LoadURL(url) | ||
| if err != nil { | ||
| return fmt.Errorf("error fetching json document at %v: %v", url, err) | ||
| } | ||
| p.docs[url] = doc | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (p *provider) GetString(uri string) (string, error) { | ||
| url, err := getUrlFromUri(uri, p.protocol) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| err = p.GetJsonDoc(url) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| xpathQuery, err := GetXpathFromUri(uri) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| returnValue := "" | ||
| var values []string | ||
| node, err := jsonquery.Query(p.docs[url], xpathQuery) | ||
| if err != nil || node == nil { | ||
| return "", fmt.Errorf("unable to query doc for value with xpath query using %v", uri) | ||
| } | ||
|
|
||
| if node.FirstChild.Data != node.LastChild.Data { | ||
| return "", fmt.Errorf("location %v has child nodes at %v, please use a more granular query", xpathQuery, url) | ||
| } | ||
|
|
||
| childNodesLength := countChildNodes(node) | ||
|
|
||
| if childNodesLength > 1 { | ||
| for child := node.FirstChild; child != nil; child = child.NextSibling { | ||
| values = append(values, child.Value().(string)) | ||
| } | ||
| returnValue = strings.Join(values, ",") | ||
|
|
||
| } else { | ||
| returnValue = node.FirstChild.Value().(string) | ||
| } | ||
|
|
||
| if p.floatAsInt { | ||
| intValue, err := strconv.ParseFloat(returnValue, 64) | ||
| if err != nil { | ||
| return "", fmt.Errorf("unable to convert possible float to int for value: %v", returnValue) | ||
| } | ||
| returnValue = fmt.Sprintf("%.0f", intValue) | ||
| } | ||
|
|
||
| return returnValue, nil | ||
| } | ||
|
|
||
| func countChildNodes(node *jsonquery.Node) int { | ||
| // Check if there are more child nodes i.e. keys under this json key | ||
| count := 0 | ||
| for child := node.FirstChild; child != nil; child = child.NextSibling { | ||
| count++ | ||
| } | ||
| return count | ||
| } | ||
|
|
||
| func (p *provider) GetStringMap(key string) (map[string]interface{}, error) { | ||
| return nil, fmt.Errorf("we should not be in the GetStringMap method") | ||
| } | ||
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.