JSON：轉換劃時代標記 - JQ：錯誤（<stdin>）：無法索引字符串字符串「時間戳」

原始文件JSON：轉換劃時代標記 - JQ：錯誤（<stdin>）：無法索引字符串字符串「時間戳」

$ < galera-healthcheck.stdout.log jq '.' | head -n 40 
{ 
    "timestamp": "1499779398.544612646", 
    "source": "Galera Healthcheck", 
    "message": "Galera Healthcheck.Opened DB connection", 
    "log_level": 1, 
    "data": { 
    "dbHost": "0.0.0.0", 
    "dbPort": 3306, 
    "dbUser": "galera-healthcheck" 
    } 
} 
{ 
    "timestamp": "1499779398.544713974", 
    "source": "Galera Healthcheck", 
    "message": "Galera Healthcheck.Serving healthcheck endpoint", 
    "log_level": 1, 
    "data": { 
    "url": "http://0.0.0.0:9200/" 
    } 
} 
{ 
    "timestamp": "1499779398.544794559", 
    "source": "Galera Healthcheck", 
    "message": "Galera Healthcheck.Attempting to GET endpoint...", 
    "log_level": 1, 
    "data": { 
    "url": "http://0.0.0.0:9200/" 
    } 
} 
{ 
    "timestamp": "1499779398.545407295", 
    "source": "Galera Healthcheck", 
    "message": "Galera Healthcheck.Failed to process request", 
    "log_level": 2, 
    "data": { 
    "error": "Cannot get status from galera" 
    } 
} 
{ 
    "timestamp": "1499779398.545511246",

我想相同的原始文件，但在人類可讀形式的時間戳。

我想：

< galera-healthcheck.stdout.log jq 'map(if .timestamp then .timestamp |= todate else . end)'

，並在文件中得到這個錯誤，每行第一個答案後

(...) 
jq: error (at <stdin>:968): Cannot index string with string "timestamp" 
jq: error (at <stdin>:969): Cannot index string with string "timestamp" 
jq: error (at <stdin>:970): Cannot index string with string "timestamp" 
jq: error (at <stdin>:971): Cannot index string with string "timestamp" 
jq: error (at <stdin>:972): Cannot index string with string "timestamp" 
jq: error (at <stdin>:973): Cannot index string with string "timestamp" 
jq: error (at <stdin>:974): Cannot index string with string "timestamp" 
jq: error (at <stdin>:975): Cannot index string with string "timestamp" 
jq: error (at <stdin>:976): Cannot index string with string "timestamp" 
jq: error (at <stdin>:977): Cannot index string with string "timestamp" 
jq: error (at <stdin>:978): Cannot index string with string "timestamp" 
jq: error (at <stdin>:979): Cannot index string with string "timestamp" 
jq: error (at <stdin>:980): Cannot index string with string "timestamp" 
jq: error (at <stdin>:981): Cannot index string with string "timestamp" 
jq: error (at <stdin>:982): Cannot index string with string "timestamp" 
jq: error (at <stdin>:983): Cannot index string with string "timestamp" 
jq: error (at <stdin>:984): Cannot index string with string "timestamp" 
jq: error (at <stdin>:985): Cannot index string with string "timestamp" 
jq: error (at <stdin>:986): Cannot index string with string "timestamp" 
jq: error (at <stdin>:987): Cannot index string with string "timestamp" 
jq: error (at <stdin>:988): Cannot index string with string "timestamp" 
jq: error (at <stdin>:989): Cannot index string with string "timestamp" 
jq: error (at <stdin>:990): Cannot index string with string "timestamp" 
jq: error (at <stdin>:991): Cannot index string with string "timestamp" 
jq: error (at <stdin>:992): Cannot index string with string "timestamp" 
jq: error (at <stdin>:993): Cannot index string with string "timestamp" 
jq: error (at <stdin>:994): Cannot index string with string "timestamp" 
jq: error (at <stdin>:995): Cannot index string with string "timestamp" 
jq: error (at <stdin>:996): Cannot index string with string "timestamp" 
jq: error (at <stdin>:997): Cannot index string with string "timestamp" 
jq: error (at <stdin>:998): Cannot index string with string "timestamp"

更新：

掛斷電話，以 '地圖'。

'todate'預計其輸入爲數字，因此您需要添加對'tonumber'的調用。

時間戳仍然在曆元格式，而不是人類可讀：

< galera-healthcheck.stdout.log jq '(if .timestamp then .timestamp |= tonumber else . end)' | head 
{ 
    "timestamp": 1499779398.5446126, 
    "source": "Galera Healthcheck", 
    "message": "Galera Healthcheck.Opened DB connection", 
    "log_level": 1, 
    "data": { 
    "dbHost": "0.0.0.0", 
    "dbPort": 3306, 
    "dbUser": "galera-healthcheck" 
    }

來源

2017-08-07 Fyodor Glebov