Merge pull request #1 from humans-group/BE-2102-cimp-init

.gitignore

@@ -0,0 +1,38 @@
+# -------------------- RESOURCE --------------------
+# https://github.com/github/gitignore
+
+# -------------------- GO ------------------------------
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# -------------------- USER DEFINED --------------------
+/build
+coverage.txt
+
+*.pyc
+.idea/
+venv/
+bin
+
+# temporary
+*.xml
+# Ignore config yaml
+etc/config.yaml
+test.yaml
+test.edn
+test.json
+
+.DS_Store

Makefile

@@ -0,0 +1,14 @@
+.PHONY: gen
+COVERAGE_FILE ?= coverage.txt
+
+check:
+	go vet ./...
+	golangci-lint run
+
+gen_modules:
+	go mod tidy
+
+gen: gen_modules
+
+precompile:
+	go build ./...

cmd/cimp/main.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"flag"
+	"path/filepath"
+
+	"github.com/humans-group/consul-importer/lib/cimp"
+)
+
+func main() {
+	pathRaw := flag.String("p", "./config.yaml", "Path to yaml with config-file which should be imported")
+	formatRaw := flag.String("f", "", "File format: json, yaml. If empty - got from extension. Default: yaml")
+	consulEndpoint := flag.String("c", "127.0.0.1:8500", "Consul endpoint in format: `address:port`")
+	prefixRaw := flag.String("pref", "", "Prefix for all keys")
+
+	flag.Parse()
+	if pathRaw == nil || formatRaw == nil || consulEndpoint == nil || prefixRaw == nil {
+		panic("Impossible! Flags with defaults can't be nil")
+	}
+
+	path, err := filepath.Abs(*pathRaw)
+	check(err)
+
+	format, err := cimp.NewFormat(*formatRaw, path)
+	check(err)
+
+	kv := cimp.NewKV()
+	check(kv.FillFromFile(path, format))
+
+	kv.AddPrefix(*prefixRaw)
+
+	storage, err := cimp.NewStorage(cimp.Config{Address: *consulEndpoint})
+	check(err)
+
+	check(storage.Save(kv))
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err.Error())
+	}
+}

go.mod

@@ -0,0 +1,12 @@
+module github.com/humans-group/consul-importer
+
+go 1.15
+
+require (
+	github.com/go-yaml/yaml v2.1.0+incompatible
+	github.com/google/btree v1.0.0 // indirect
+	github.com/hashicorp/consul/api v1.8.1
+	github.com/hashicorp/golang-lru v0.5.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	olympos.io/encoding/edn v0.0.0-20201019073823-d3554ca0b0a3
+)

go.sum

@@ -0,0 +1,132 @@
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+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
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+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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+olympos.io/encoding/edn v0.0.0-20201019073823-d3554ca0b0a3/go.mod h1:oVgVk4OWVDi43qWBEyGhXgYxt7+ED4iYNpTngSLX2Iw=

lib/cimp/errors.go

@@ -0,0 +1,8 @@
+package cimp
+
+import "fmt"
+
+var (
+	ErrorNotFoundInKV  = fmt.Errorf("value is not found in KV")
+	ErrorTypeIncorrect = fmt.Errorf("type is incorrect")
+)

lib/cimp/fileformat.go

@@ -0,0 +1,66 @@
+package cimp
+
+import (
+	"encoding/json"
+	"fmt"
+	"path/filepath"
+
+	"github.com/go-yaml/yaml"
+	"olympos.io/encoding/edn"
+)
+
+type FileFormat string
+
+const (
+	JSONFormat FileFormat = "json"
+	YAMLFormat FileFormat = "yaml"
+	EDNFormat  FileFormat = "edn"
+)
+
+func NewFormat(format, path string) (FileFormat, error) {
+	if len(format) > 1 {
+		switch FileFormat(format) {
+		case JSONFormat:
+			return JSONFormat, nil
+		case YAMLFormat:
+			return YAMLFormat, nil
+		case EDNFormat:
+			return EDNFormat, nil
+		default:
+			return "", fmt.Errorf("undefined format: %s", format)
+		}
+	}
+
+	switch filepath.Ext(path) {
+	case ".json":
+		return JSONFormat, nil
+	case ".yml", ".yaml":
+		return YAMLFormat, nil
+	case ".edn":
+		return EDNFormat, nil
+	}
+
+	return YAMLFormat, nil
+}
+
+func UnmarshalWithFormat(format FileFormat, fileData []byte) (map[interface{}]interface{}, error) {
+	cfgRaw := make(map[interface{}]interface{})
+	var err error
+
+	switch format {
+	case JSONFormat:
+		err = json.Unmarshal(fileData, &cfgRaw)
+	case YAMLFormat:
+		err = yaml.Unmarshal(fileData, &cfgRaw)
+	case EDNFormat:
+		err = edn.Unmarshal(fileData, &cfgRaw)
+	default:
+		return nil, fmt.Errorf("unsupported format: %v", format)
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("unmarshal with format %q error: %w", format, err)
+	}
+
+	return cfgRaw, nil
+}