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Fix 'err:parameter node not found' for dotted reference #526

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Fix 'err:parameter node not found' for dotted reference #526

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22 changes: 15 additions & 7 deletions internal/hook/hook.go
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Original file line number Diff line number Diff line change
Expand Up @@ -394,14 +394,22 @@ func GetParameter(s string, params interface{}) (interface{}, error) {
return v, nil
}

// Checked for dotted references
p := strings.SplitN(s, ".", 2)
if pValue, ok := params.(map[string]interface{})[p[0]]; ok {
if len(p) > 1 {
return GetParameter(p[1], pValue)
// Check for dotted references
p := strings.Split(s, ".")
ref := ""
for i := range p {
if i == 0 {
ref = p[i]
} else {
ref += "." + p[i]
}
if pValue, ok := params.(map[string]interface{})[ref]; ok {
if i == len(p)-1 {
return pValue, nil
} else {
return GetParameter(strings.Join(p[i+1:], "."), pValue)
}
}

return pValue, nil
}
}

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2 changes: 2 additions & 0 deletions internal/hook/hook_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -231,6 +231,8 @@ var extractParameterTests = []struct {
{"b", map[string]interface{}{"b": map[string]interface{}{"z": 1}}, `{"z":1}`, true},
{"c", map[string]interface{}{"c": []interface{}{"y", "z"}}, `["y","z"]`, true},
{"d", map[string]interface{}{"d": [2]interface{}{"y", "z"}}, `["y","z"]`, true},
{"a.b.c.1", map[string]interface{}{"a": map[string]interface{}{"b": map[string]interface{}{"c.1": "z"}}}, "z", true},
{"a.b.1.c", map[string]interface{}{"a": map[string]interface{}{"b.1": map[string]interface{}{"c": "z"}}}, "z", true},
// failures
{"check_nil", nil, "", false},
{"a.X", map[string]interface{}{"a": map[string]interface{}{"b": "z"}}, "", false}, // non-existent parameter reference
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