{"record":{"id":"f2df2555a6be9598","repo":"caddyserver/caddy","slug":"adapting-config-using-s-v","errorCode":null,"errorMessage":"adapting config using %s: %v","messagePattern":"adapting config using (.+?): (.+?)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"cmd/main.go","lineNumber":216,"sourceCode":"\t} else if err != nil {\n\t\treturn nil, \"\", \"\", err\n\t}\n\n\t// load config adapter\n\tif adapterName != \"\" {\n\t\tcfgAdapter = caddyconfig.GetAdapter(adapterName)\n\t\tif cfgAdapter == nil {\n\t\t\treturn nil, \"\", \"\", fmt.Errorf(\"unrecognized config adapter: %s\", adapterName)\n\t\t}\n\t}\n\n\t// adapt config\n\tif cfgAdapter != nil {\n\t\tadaptedConfig, warnings, err := cfgAdapter.Adapt(config, map[string]any{\n\t\t\t\"filename\": configFile,\n\t\t})\n\t\tif err != nil {\n\t\t\treturn nil, \"\", \"\", fmt.Errorf(\"adapting config using %s: %v\", adapterName, err)\n\t\t}\n\t\tlogger.Info(\"adapted config to JSON\", zap.String(\"adapter\", adapterName))\n\t\tfor _, warn := range warnings {\n\t\t\tmsg := warn.Message\n\t\t\tif warn.Directive != \"\" {\n\t\t\t\tmsg = fmt.Sprintf(\"%s: %s\", warn.Directive, warn.Message)\n\t\t\t}\n\t\t\tlogger.Warn(msg,\n\t\t\t\tzap.String(\"adapter\", adapterName),\n\t\t\t\tzap.String(\"file\", warn.File),\n\t\t\t\tzap.Int(\"line\", warn.Line))\n\t\t}\n\t\tconfig = adaptedConfig\n\t} else if len(config) != 0 {\n\t\t// validate that the config is at least valid JSON\n\t\terr = json.Unmarshal(config, new(any))\n\t\tif err != nil {\n\t\t\tif jsonErr, ok := err.(*json.SyntaxError); ok {","sourceCodeStart":198,"sourceCodeEnd":234,"githubUrl":"https://github.com/caddyserver/caddy/blob/50e54ee279aa1e504fe218ca49ab6ae16c100410/cmd/main.go#L198-L234","documentation":"The selected adapter ran over the config and returned an error — for the caddyfile adapter this is the classic Caddyfile syntax/semantic error surface (unknown directive, bad site address, malformed block). The message includes the adapter name and the adapter's own detailed error with file/line where available.","triggerScenarios":"Caddyfile with a typo'd directive, missing brace, duplicate site block, invalid argument count for a directive, or a site address that fails parsing; JSON adapter strictness failures.","commonSituations":"Editing a Caddyfile and forgetting a closing brace; upgrading Caddy where a directive was renamed/removed; copy-pasting snippet blocks incorrectly.","solutions":["Read the embedded adapter error — it usually gives the exact line and token","Run 'caddy fmt --overwrite Caddyfile' to normalize braces/indentation and expose structure errors","Compare against the docs for the failing directive; after upgrades check the changelog for renamed directives","Iterate with 'caddy adapt --config Caddyfile --adapter caddyfile' until it adapts cleanly, then run/reload"],"exampleFix":"# before\nexample.com {\n    respond \"hi\"\n# missing closing brace\n\n# after\nexample.com {\n    respond \"hi\"\n}","handlingStrategy":"validation","validationCode":"# Dry-run the adaptation in CI to catch Caddyfile errors pre-deploy:\ncaddy adapt --config Caddyfile --adapter caddyfile > /dev/null","typeGuard":null,"tryCatchPattern":"if err := adapt(); err != nil { if strings.Contains(err.Error(), \"adapting config using\") { /* parse file:line from the inner error and point the editor there */ } }","preventionTips":["Run 'caddy fmt --diff' before committing Caddyfiles","Add 'caddy adapt' to CI so syntax errors block deploy","After version upgrades, review changelogs for renamed directives"],"tags":["cli","caddyfile","adapter","syntax-error","configuration"],"backgroundTag":null,"analyzedSha":"50e54ee279aa1e504fe218ca49ab6ae16c100410","analyzedAt":"2026-08-15T09:20:21.641Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}