{"id":17203100,"url":"https://github.com/tomoyamachi/go-mask-json-patterns","last_synced_at":"2026-04-20T04:02:48.644Z","repository":{"id":46612514,"uuid":"274541025","full_name":"tomoyamachi/go-mask-json-patterns","owner":"tomoyamachi","description":null,"archived":false,"fork":false,"pushed_at":"2025-02-18T06:00:08.000Z","size":48,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2025-03-25T09:49:24.491Z","etag":null,"topics":["go","json"],"latest_commit_sha":null,"homepage":"","language":"Go","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/tomoyamachi.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2020-06-24T00:56:20.000Z","updated_at":"2025-02-18T06:00:12.000Z","dependencies_parsed_at":"2025-03-25T09:41:44.584Z","dependency_job_id":"4875b84a-3fba-4cbe-a6a1-3b7688492d9a","html_url":"https://github.com/tomoyamachi/go-mask-json-patterns","commit_stats":null,"previous_names":["tomoyamachi/logmask-patterns"],"tags_count":5,"template":false,"template_full_name":null,"purl":"pkg:github/tomoyamachi/go-mask-json-patterns","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tomoyamachi%2Fgo-mask-json-patterns","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tomoyamachi%2Fgo-mask-json-patterns/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tomoyamachi%2Fgo-mask-json-patterns/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tomoyamachi%2Fgo-mask-json-patterns/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/tomoyamachi","download_url":"https://codeload.github.com/tomoyamachi/go-mask-json-patterns/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tomoyamachi%2Fgo-mask-json-patterns/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":267960841,"owners_count":24172508,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","status":"online","status_checked_at":"2025-07-30T02:00:09.044Z","response_time":70,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["go","json"],"created_at":"2024-10-15T02:16:56.855Z","updated_at":"2026-04-20T04:02:48.638Z","avatar_url":"https://github.com/tomoyamachi.png","language":"Go","funding_links":[],"categories":[],"sub_categories":[],"readme":"# go-mask-json-patterns\n\nA collection of patterns for masking sensitive fields in JSON output with Go.\n\n## Patterns\n\n| Package | Approach | Description |\n|---|---|---|\n| `structtag_interface` | Struct tag + reflection | Mask fields marked with `log:\"*\"` tag |\n| `structtag_alias` | Struct tag + alias type | Mask fields marked with `sensitive:\"true\"` tag |\n| `interfaces` | JSON key path | Mask fields in a JSON string by specifying key paths |\n| `override` | MarshalJSON/String override | Manually implement masking per struct |\n| `originaltype` | Custom type | Define a dedicated type that always masks its value |\n\n## Example (`structtag_interface`)\n\n### Struct Definition\n\n```go\ntype MaskResponse struct {\n\tStr               string            `json:\"str,omitempty\"`\n\tMaskStr           string            `json:\"mstr,omitempty\" log:\"*\"`\n\tInt               int               `json:\"int,omitempty\"`\n\tMaskInt           int               `json:\"mint,omitempty\" log:\"*\"`\n\tSlice             []string          `json:\"slice,omitempty\"`\n\tMaskSlice         []string          `json:\"mslice,omitempty\" log:\"*\"`\n\tMap               map[string]string `json:\"map,omitempty\"`\n\tMaskMap           map[string]string `json:\"mmap,omitempty\" log:\"*\"`\n\tStruct            SubMask           `json:\"struct,omitempty\"`\n\tMaskStruct        SubMask           `json:\"mstruct,omitempty\" log:\"*\"`\n\tPointerStruct     *SubMask          `json:\"pstruct,omitempty\"`\n\tMaskPointerStruct *SubMask          `json:\"mpstruct,omitempty\" log:\"*\"`\n}\n\ntype SubMask struct {\n\tStr     string `json:\"str,omitempty\"`\n\tMaskStr string `json:\"mstr,omitempty\" log:\"*\"`\n}\n```\n\n### Masked Output\n\n```json\n{\n  \"str\": \"a\",\n  \"mstr\": \"*\",\n  \"int\": 100,\n  \"mint\": \"*\",\n  \"slice\": [\n    \"a\"\n  ],\n  \"mslice\": \"*\",\n  \"map\": {\n    \"a\": \"b\"\n  },\n  \"mmap\": \"*\",\n  \"struct\": {\n    \"mstr\": \"*\",\n    \"str\": \"a\"\n  },\n  \"mstruct\": \"*\",\n  \"pstruct\": {\n    \"mstr\": \"*\",\n    \"str\": \"a\"\n  },\n  \"mpstruct\": \"*\"\n}\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ftomoyamachi%2Fgo-mask-json-patterns","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Ftomoyamachi%2Fgo-mask-json-patterns","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ftomoyamachi%2Fgo-mask-json-patterns/lists"}