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go-assign\n\ngo-assign is a tool that supports unmarshal structs from data and provides a generator to generate extended structs.\n\n# Motivation\n\nNowadays, the workload of managing application configuration with GitOps is popular. This style is efficient and easy to operate, but secret management requires more care.\n\nIn regard to security, the secret data should not be committed to the repository, even if you're using a private repository. Therefore, the secret should be injected into the application from outside the repository.\n\nFor example, consider a workload that manages application configuration files with json. You must exclude the secret from json to include this file in the repository. To achieve this, you need to set the secret file path in the config file and load it from your application.\n\n```json\n{\n  \"helloAPIDomain\": \"hello-api.example.com\",\n  \"helloAPITokenFile\": \"/path-to-path/secrets/hello-api-credential.txt\"\n}\n```\n\nThis is a good idea, but as the number of secrets increases, so does the cost of implementation in your application. go-assign solves this problem with its own tags and generator. \n\n# Installation\n\n```shell\n$ go install github.com/stormcat24/go-assign/cmd/go-assign@v0.0.2\n```\n\n# Usage\n\n## Original file\n\n```go\npackage example\n\n//go:generate go-assign generate\n\ntype Config struct {\n\tHelloAPIDomain string `json:\"helloAPIDomain\"`\n\tHelloAPIToken  []byte `json:\"helloAPIToken\" go-assign:\"fileFieldName=HelloAPITokenFile,fileFieldTag=json:\\\"helloAPITokenFile\\\"\"`\n\tWorldAPIDomain string `json:\"worldAPIDomain\"`\n\tWorldAPIToken  []byte `json:\"worldAPIToken\" go-assign:\"fileFieldName=WorldAPITokenFile,fileFieldTag=json:\\\"worldAPITokenFile\\\",base64=true\"`\n}\n```\n\nWhen you run `go generate`, the following extended structure will be generated.\n\n```go\n// Code generated by go-assign; DO NOT EDIT.\n\npackage example\n\nimport (\n\t\"encoding/base64\"\n\t\"encoding/json\"\n\t\"os\"\n)\n\ntype ConfigGenerated struct {\n\tConfig\n\tHelloAPITokenFile string `json:\"helloAPITokenFile\"`\n\tWorldAPITokenFile string `json:\"worldAPITokenFile\"`\n}\n\nfunc (g *ConfigGenerated) UnmarshalJSON(data []byte) error {\n\ttype Alias ConfigGenerated\n\ts := struct {\n\t\t*Alias\n\t\tHelloAPITokenFile string `json:\"helloAPITokenFile\"`\n\t\tWorldAPITokenFile string `json:\"worldAPITokenFile\"`\n\t}{\n\t\tAlias: (*Alias)(g),\n\t}\n\n\tif err := json.Unmarshal(data, \u0026s); err != nil {\n\t\treturn err\n\t}\n\t// Assign \"HelloAPITokenFile\" and \"HelloAPIToken\"\n\tg.HelloAPITokenFile = s.HelloAPITokenFile\n\thelloApitokenFileData, err := os.ReadFile(s.HelloAPITokenFile)\n\tif err != nil {\n\t\treturn err\n\t}\n\tg.HelloAPIToken = helloApitokenFileData\n\n\t// Assign \"WorldAPITokenFile\" and \"WorldAPIToken\"\n\tg.WorldAPITokenFile = s.WorldAPITokenFile\n\tworldApitokenFileData, err := os.ReadFile(s.WorldAPITokenFile)\n\tif err != nil {\n\t\treturn err\n\t}\n\tg.WorldAPIToken = make([]byte, base64.StdEncoding.EncodedLen(len(worldApitokenFileData)))\n\tif _, err := base64.StdEncoding.Decode(g.WorldAPIToken, worldApitokenFileData); err != nil {\n\t\treturn err\n\t}\n\n\treturn nil\n}\n```\n\n\nLicense\n===\nSee [LICENSE](LICENSE).\n\nCopyright © stromcat24. All Rights Reserved.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstormcat24%2Fgo-assign","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fstormcat24%2Fgo-assign","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstormcat24%2Fgo-assign/lists"}