{"id":43380,"date":"2023-12-09T00:54:48","date_gmt":"2024-02-21T05:17:55","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bb%8egolang%e7%a8%8b%e5%ba%8f%e4%b8%ad%e8%b0%83%e7%94%a8prometheus-api%ef%bc%8c%e4%bb%a5%e6%8f%90%e5%8f%96%e7%94%b1%e5%af%bc%e5%87%ba%e5%99%a8%e6%94%b6%e9%9b%86%e7%9a%84%e6%8c%87%e6%a0%87%e4%bf%a1\/"},"modified":"2024-05-04T12:44:33","modified_gmt":"2024-05-04T04:44:33","slug":"%e4%bb%8egolang%e7%a8%8b%e5%ba%8f%e4%b8%ad%e8%b0%83%e7%94%a8prometheus-api%ef%bc%8c%e4%bb%a5%e6%8f%90%e5%8f%96%e7%94%b1%e5%af%bc%e5%87%ba%e5%99%a8%e6%94%b6%e9%9b%86%e7%9a%84%e6%8c%87%e6%a0%87%e4%bf%a1","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bb%8egolang%e7%a8%8b%e5%ba%8f%e4%b8%ad%e8%b0%83%e7%94%a8prometheus-api%ef%bc%8c%e4%bb%a5%e6%8f%90%e5%8f%96%e7%94%b1%e5%af%bc%e5%87%ba%e5%99%a8%e6%94%b6%e9%9b%86%e7%9a%84%e6%8c%87%e6%a0%87%e4%bf%a1\/","title":{"rendered":"\u4eceGolang\u7a0b\u5e8f\u4e2d\u8c03\u7528Prometheus API\uff0c\u4ee5\u63d0\u53d6\u7531\u5bfc\u51fa\u5668\u6536\u96c6\u7684\u6307\u6807\u4fe1\u606f"},"content":{"rendered":"

\u4f5c\u4e3a\u4ecePrometheus\u670d\u52a1\u5668\u63d0\u53d6\u6570\u636e\u7684\u4e00\u79cd\u65b9\u5f0f\uff0cPrometheus\u63d0\u4f9b\u4e86HTTP API\u3002<\/p>\n

\u6211\u53d1\u73b0\u6709\u5f88\u591a\u5173\u4e8e\u5982\u4f55\u5b9a\u5236\u548c\u521b\u5efaExporter\u7684\u6587\u7ae0\uff0c\u4f46\u662f\u5173\u4e8e\u5982\u4f55\u4ecePrometheus\u7684HTTP API\u83b7\u53d6\u6570\u636e\u7684\u4fe1\u606f\u5e76\u4e0d\u5e38\u89c1\uff0c\u6240\u4ee5\u6211\u60f3\u8bb0\u5f55\u4e0b\u6765\u4ee5\u5907\u5fd8\u3002<\/p>\n

\u5c1d\u8bd5\u4f7f\u7528curl\u8c03\u7528Prometheus\u7684HTTP API<\/h2>\n
\r\n$<\/span> curl<\/span> -G<\/span> \"http:\/\/<prometheus \u30db\u30b9\u30c8:\u30dd\u30fc\u30c8>\/api\/v1\/targets\"<\/span> |<\/span> jq<\/span> .<\/span>\r\n{<\/span>\r\n  \"status\"<\/span>:<\/span> \"success\"<\/span>,<\/span>\r\n  \"data\"<\/span>:<\/span> {<\/span>\r\n    \"activeTargets\"<\/span>:<\/span> [<\/span>\r\n      {<\/span>\r\n        \"discoveredLabels\"<\/span>:<\/span> {<\/span>\r\n          \"__address__\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n          \"__metrics_path__\"<\/span>:<\/span> \"\/metrics\"<\/span>,<\/span>\r\n          \"__scheme__\"<\/span>:<\/span> \"http\"<\/span>,<\/span>\r\n          \"job\"<\/span>:<\/span> \"kong\"<\/span>\r\n        },<\/span>\r\n        \"labels\"<\/span>:<\/span> {<\/span>\r\n          \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n          \"job\"<\/span>:<\/span> \"kong\"<\/span>\r\n        },<\/span>\r\n        \"scrapeUrl\"<\/span>:<\/span> \"http:\/\/192.168.212.101:8001\/metrics\"<\/span>,<\/span>\r\n        \"lastError\"<\/span>:<\/span> \"\"<\/span>,<\/span>\r\n        \"lastScrape\"<\/span>:<\/span> \"2019-10-29T11:07:40.26459926Z\"<\/span>,<\/span>\r\n        \"health\"<\/span>:<\/span> \"up\"<\/span>\r\n      },<\/span>\r\n      {<\/span>\r\n        \"discoveredLabels\"<\/span>:<\/span> {<\/span>\r\n          \"__address__\"<\/span>:<\/span> \"localhost:9090\"<\/span>,<\/span>\r\n          \"__metrics_path__\"<\/span>:<\/span> \"\/metrics\"<\/span>,<\/span>\r\n          \"__scheme__\"<\/span>:<\/span> \"http\"<\/span>,<\/span>\r\n          \"job\"<\/span>:<\/span> \"prometheus\"<\/span>\r\n        },<\/span>\r\n        \"labels\"<\/span>:<\/span> {<\/span>\r\n          \"instance\"<\/span>:<\/span> \"localhost:9090\"<\/span>,<\/span>\r\n          \"job\"<\/span>:<\/span> \"prometheus\"<\/span>\r\n        },<\/span>\r\n        \"scrapeUrl\"<\/span>:<\/span> \"http:\/\/localhost:9090\/metrics\"<\/span>,<\/span>\r\n        \"lastError\"<\/span>:<\/span> \"\"<\/span>,<\/span>\r\n        \"lastScrape\"<\/span>:<\/span> \"2019-10-29T11:07:33.962713961Z\"<\/span>,<\/span>\r\n        \"health\"<\/span>:<\/span> \"up\"<\/span>\r\n      }<\/span>\r\n    ],<\/span>\r\n    \"droppedTargets\"<\/span>:<\/span> []<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
job\u540d\u3068\u3057\u3066kong\u3068\u8a2d\u5b9a\u3057\u305ftarget\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u4f8b\u3067\u3059\u3002(kong<\/span> api<\/span> gateway\u306e\u30e1\u30c8\u30ea\u30af\u30b9\u30ea\u30b9\u30c8\u304c\u53d6\u308c\u3066\u3044\u308b\u306e\u304c\u308f\u304b\u308a\u307e\u3059\u3002)<\/span>\r\n\r\n$<\/span> curl<\/span> -G<\/span> 'http:\/\/<prometheus<\/span> \u30db\u30b9\u30c8:\u30dd\u30fc\u30c8>\/api\/v<\/span>1<\/span>\/targets\/metadata'<\/span> --data-urlencode<\/span> 'match_target=<\/span>{<\/span>job=<\/span>\"kong\"<\/span>}<\/span>'<\/span> |<\/span> jq<\/span> .<\/span>\r\n{<\/span>\r\n  \"status\"<\/span>:<\/span> \"success\"<\/span>,<\/span>\r\n  \"data\"<\/span>:<\/span> [<\/span>\r\n    {<\/span>\r\n      \"target\"<\/span>:<\/span> {<\/span>\r\n        \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n        \"job\"<\/span>:<\/span> \"kong\"<\/span>\r\n      },<\/span>\r\n      \"metric\"<\/span>:<\/span> \"kong_nginx_http_current_connections\"<\/span>,<\/span>\r\n      \"type\"<\/span>:<\/span> \"gauge\"<\/span>,<\/span>\r\n      \"help\"<\/span>:<\/span> \"Number of HTTP connections\"<\/span>,<\/span>\r\n      \"unit\"<\/span>:<\/span> \"\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"target\"<\/span>:<\/span> {<\/span>\r\n        \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n        \"job\"<\/span>:<\/span> \"kong\"<\/span>\r\n      },<\/span>\r\n      \"metric\"<\/span>:<\/span> \"kong_nginx_metric_errors_total\"<\/span>,<\/span>\r\n      \"type\"<\/span>:<\/span> \"counter\"<\/span>,<\/span>\r\n      \"help\"<\/span>:<\/span> \"Number of nginx-lua-prometheus errors\"<\/span>,<\/span>\r\n      \"unit\"<\/span>:<\/span> \"\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"target\"<\/span>:<\/span> {<\/span>\r\n        \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n        \"job\"<\/span>:<\/span> \"kong\"<\/span>\r\n      },<\/span>\r\n      \"metric\"<\/span>:<\/span> \"kong_bandwidth\"<\/span>,<\/span>\r\n      \"type\"<\/span>:<\/span> \"counter\"<\/span>,<\/span>\r\n      \"help\"<\/span>:<\/span> \"Total bandwidth in bytes consumed per service in Kong\"<\/span>,<\/span>\r\n      \"unit\"<\/span>:<\/span> \"\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"target\"<\/span>:<\/span> {<\/span>\r\n        \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n        \"job\"<\/span>:<\/span> \"kong\"<\/span>\r\n      },<\/span>\r\n      \"metric\"<\/span>:<\/span> \"kong_datastore_reachable\"<\/span>,<\/span>\r\n      \"type\"<\/span>:<\/span> \"gauge\"<\/span>,<\/span>\r\n      \"help\"<\/span>:<\/span> \"Datastore reachable from Kong, 0 is unreachable\"<\/span>,<\/span>\r\n      \"unit\"<\/span>:<\/span> \"\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"target\"<\/span>:<\/span> {<\/span>\r\n        \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n        \"job\"<\/span>:<\/span> \"kong\"<\/span>\r\n      },<\/span>\r\n      \"metric\"<\/span>:<\/span> \"kong_http_status\"<\/span>,<\/span>\r\n      \"type\"<\/span>:<\/span> \"counter\"<\/span>,<\/span>\r\n      \"help\"<\/span>:<\/span> \"HTTP status codes per service in Kong\"<\/span>,<\/span>\r\n      \"unit\"<\/span>:<\/span> \"\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"target\"<\/span>:<\/span> {<\/span>\r\n        \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n        \"job\"<\/span>:<\/span> \"kong\"<\/span>\r\n      },<\/span>\r\n      \"metric\"<\/span>:<\/span> \"kong_latency\"<\/span>,<\/span>\r\n      \"type\"<\/span>:<\/span> \"histogram\"<\/span>,<\/span>\r\n      \"help\"<\/span>:<\/span> \"Latency added by Kong, total request time and upstream latency for each service in Kong\"<\/span>,<\/span>\r\n      \"unit\"<\/span>:<\/span> \"\"<\/span>\r\n    }<\/span>\r\n  ]<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
kong_nginx_http_current_connections\u30e1\u30c8\u30ea\u30af\u30b9\u306e\u5024\u306b\u5bfe\u3057\u3066\u3001Tue<\/span> 29<\/span> Oct<\/span> 2019<\/span> 08<\/span>:<\/span>36<\/span>:<\/span>42<\/span> PM<\/span> JST\u304b\u3089Tue<\/span> 29<\/span> Oct<\/span> 2019<\/span> 08<\/span>:<\/span>46<\/span>:<\/span>42<\/span> PM<\/span> JST\u306e\u9593\u306e<\/span>10<\/span>\u5206\u9593\u306e\u30c7\u30fc\u30bf\u3092<\/span>1<\/span>\u5206\u9593\u9694\u3067\u96c6\u8a08\u3057\u305f\u6642\u7cfb\u5217\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u4f8b\u3002<\/span>\r\n\r\n$<\/span> curl<\/span> -G<\/span> http:\/\/<prometheus<\/span> \u30db\u30b9\u30c8:\u30dd\u30fc\u30c8>\/api\/v<\/span>1<\/span>\/query_range<\/span> --data-urlencode<\/span> 'query=kong_nginx_http_current_connections'<\/span> -d<\/span> 'start=<\/span>1572349002<\/span>'<\/span> -d<\/span> 'end=<\/span>1572349602<\/span>'<\/span> \r\n-d<\/span> 'step=<\/span>60<\/span>s'<\/span> |<\/span> jq<\/span> .<\/span>\r\n{<\/span>\r\n  \"status\"<\/span>:<\/span> \"success\"<\/span>,<\/span>\r\n  \"data\"<\/span>:<\/span> {<\/span>\r\n    \"resultType\"<\/span>:<\/span> \"matrix\"<\/span>,<\/span>\r\n    \"result\"<\/span>:<\/span> [<\/span>\r\n      {<\/span>\r\n        \"metric\"<\/span>:<\/span> {<\/span>\r\n          \"__name__\"<\/span>:<\/span> \"kong_nginx_http_current_connections\"<\/span>,<\/span>\r\n          \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n          \"job\"<\/span>:<\/span> \"kong\"<\/span>,<\/span>\r\n          \"state\"<\/span>:<\/span> \"accepted\"<\/span>\r\n        },<\/span>\r\n        \"values\"<\/span>:<\/span> [<\/span>\r\n          [<\/span>\r\n            1572349002<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349062<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349122<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349182<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349242<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349302<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349362<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349422<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349482<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349542<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349602<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ]<\/span>\r\n        ]<\/span>\r\n      },<\/span>\r\n      {<\/span>\r\n        \"metric\"<\/span>:<\/span> {<\/span>\r\n          \"__name__\"<\/span>:<\/span> \"kong_nginx_http_current_connections\"<\/span>,<\/span>\r\n          \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n          \"job\"<\/span>:<\/span> \"kong\"<\/span>,<\/span>\r\n          \"state\"<\/span>:<\/span> \"active\"<\/span>\r\n        },<\/span>\r\n        \"values\"<\/span>:<\/span> [<\/span>\r\n          [<\/span>\r\n            1572349002<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349062<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349122<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349182<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349242<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349302<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349362<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349422<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349482<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349542<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349602<\/span>,<\/span>\r\n            \"3\"<\/span>\r\n          ]<\/span>\r\n        ]<\/span>\r\n      },<\/span>\r\n      {<\/span>\r\n        \"metric\"<\/span>:<\/span> {<\/span>\r\n          \"__name__\"<\/span>:<\/span> \"kong_nginx_http_current_connections\"<\/span>,<\/span>\r\n          \"instance\"<\/span>:<\/span> \"192.168.212.101:8001\"<\/span>,<\/span>\r\n          \"job\"<\/span>:<\/span> \"kong\"<\/span>,<\/span>\r\n          \"state\"<\/span>:<\/span> \"handled\"<\/span>\r\n        },<\/span>\r\n        \"values\"<\/span>:<\/span> [<\/span>\r\n          [<\/span>\r\n            1572349002<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349062<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349122<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349182<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349242<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349302<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349362<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349422<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349482<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349542<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ],<\/span>\r\n          [<\/span>\r\n            1572349602<\/span>,<\/span>\r\n            \"6\"<\/span>\r\n          ]<\/span>\r\n        ]<\/span>\r\n      },<\/span>\r\n    \u30fb\u30fb\u30fb\u7565<\/span>\r\n      }<\/span>\r\n    ]<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5c1d\u8bd5\u4f7f\u7528Prometheus\u7684golang\u5ba2\u6237\u7aef\u5e93\u8fdb\u884c\u83b7\u53d6<\/h2>\n
\u8981\u4f7f\u7528\u5e93\uff0c\u9996\u5148\u9700\u8981\u901a\u8fc7go get\u547d\u4ee4\u83b7\u53d6\u5982\u4e0b\u6240\u793a\u7684\u5e93\u3002<\/p>\n
$ <\/span>go get github.com\/prometheus\/client_golang\/api\r\n$ <\/span>go get github.com\/prometheus\/client_golang\/api\/prometheus\/v1\r\n<\/code><\/pre>\n
\u8ba9\u6211\u4eec\u5728golang\u4e2d\u5c1d\u8bd5\u83b7\u53d6\u4e0e\u4e0a\u8ff0curl\u5904\u7406\u76f8\u540c\u7684\u5904\u7406\u3002<\/p>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"github.com\/prometheus\/client_golang\/api\"<\/span>\r\n    v1<\/span> \"github.com\/prometheus\/client_golang\/api\/prometheus\/v1\"<\/span>\r\n    \"fmt\"<\/span>\r\n    \"os\"<\/span>\r\n    \"time\"<\/span>\r\n    \"context\"<\/span>\r\n)<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    client<\/span>,<\/span> err<\/span> :=<\/span> api<\/span>.<\/span>NewClient<\/span>(<\/span>api<\/span>.<\/span>Config<\/span>{<\/span>\r\n        Address<\/span>:<\/span> \"http:\/\/192.168.212.101:9099\"<\/span>,<\/span>\r\n    })<\/span>\r\n    if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"Error creating client: %v<\/span>\\n<\/span>\"<\/span>,<\/span> err<\/span>)<\/span>\r\n        os<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n    }<\/span>\r\n    api<\/span> :=<\/span> v1<\/span>.<\/span>NewAPI<\/span>(<\/span>client<\/span>)<\/span>\r\n    ctx<\/span>,<\/span> cancel<\/span> :=<\/span> context<\/span>.<\/span>WithTimeout<\/span>(<\/span>context<\/span>.<\/span>Background<\/span>(),<\/span> 10<\/span>*<\/span>time<\/span>.<\/span>Second<\/span>)<\/span>\r\n    defer<\/span> cancel<\/span>()<\/span>\r\n\r\n    \/\/ \/api\/v1\/targets<\/span>\r\n    result<\/span>,<\/span> err<\/span> :=<\/span> api<\/span>.<\/span>Targets<\/span>(<\/span>ctx<\/span>)<\/span>\r\n    if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"Error get Targets: %v<\/span>\\n<\/span>\"<\/span>,<\/span> err<\/span>)<\/span>\r\n        os<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n    }<\/span>\r\n    fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"Result:<\/span>\\n<\/span>%v<\/span>\\n<\/span>\"<\/span>,<\/span> result<\/span>)<\/span>\r\n\r\n\r\n    \/\/ \/api\/v1\/target\/metadata<\/span>\r\n    result_metric_metadata<\/span>,<\/span> err<\/span> :=<\/span> api<\/span>.<\/span>TargetsMetadata<\/span>(<\/span>ctx<\/span>,<\/span> \"{job=<\/span>\\\"<\/span>kong<\/span>\\\"<\/span>}\"<\/span>,<\/span> \"\"<\/span>,<\/span> \"\"<\/span>)<\/span>\r\n    if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"Error get target metadata: %v<\/span>\\n<\/span>\"<\/span>,<\/span> err<\/span>)<\/span>\r\n        os<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n    }<\/span>\r\n    fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"Result TargetsMetadata: <\/span>\\n<\/span>%v<\/span>\\n<\/span>\"<\/span>,<\/span> result_metric_metadata<\/span>)<\/span>\r\n\r\n    \/\/ \/api\/v1\/query_range<\/span>\r\n    query<\/span> :=<\/span> \"kong_nginx_http_current_connections\"<\/span>\r\n    now<\/span> :=<\/span> time<\/span>.<\/span>Now<\/span>()<\/span>\r\n    range_param<\/span> :=<\/span> v1<\/span>.<\/span>Range<\/span>{<\/span>Start<\/span>:<\/span> now<\/span>.<\/span>Add<\/span>(<\/span>-<\/span>time<\/span>.<\/span>Hour<\/span>),<\/span> End<\/span>:<\/span> now<\/span>,<\/span> Step<\/span>:<\/span> 60<\/span> *<\/span> time<\/span>.<\/span>Second<\/span>}<\/span>\r\n    result_query_range<\/span>,<\/span> warning<\/span>,<\/span> err<\/span> :=<\/span> api<\/span>.<\/span>QueryRange<\/span>(<\/span>ctx<\/span>,<\/span> query<\/span>,<\/span> range_param<\/span>)<\/span>\r\n    if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"Error get query range: %v<\/span>\\n<\/span>\"<\/span>,<\/span> err<\/span>)<\/span>\r\n        os<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n    }<\/span>\r\n    if<\/span> len<\/span>(<\/span>warning<\/span>)<\/span> ><\/span> 0<\/span> {<\/span>\r\n        fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"Warning QueryRange: %v<\/span>\\n<\/span>\"<\/span>,<\/span> warning<\/span>)<\/span>\r\n    }<\/span>\r\n    fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"Result QueryRange: <\/span>\\n<\/span>%v<\/span>\\n<\/span>\"<\/span>,<\/span> result_query_range<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5f53\u4f60\u5c1d\u8bd5\u6267\u884c\u65f6\uff0c\u4f1a\u5f97\u5230\u4ee5\u4e0b\u7684\u7ed3\u679c\u3002<\/p>\n
$ <\/span>go run prometheus_api_sample.go\r\nResult:\r\n{[{<\/span>map[__address__:192.168.212.101:8001 __metrics_path__:\/metrics __scheme__:http job:kong] {<\/span>instance<\/span>=<\/span>\"192.168.212.101:8001\"<\/span>, job<\/span>=<\/span>\"kong\"<\/span>}<\/span> http:\/\/192.168.212.101:8001\/metrics  2019-10-29 \r\n15:06:10.892269867 +0000 UTC up}<\/span> {<\/span>map[__address__:localhost:9090 __metrics_path__:\/metrics __scheme__:http job:prometheus] {<\/span>instance<\/span>=<\/span>\"localhost:9090\"<\/span>, job<\/span>=<\/span>\"prometheus\"<\/span>}<\/span> http:\/\/localhost:9090\/metrics  2019-10-29 15:06:19.589531881 +0000 UTC up}]<\/span> []}<\/span>\r\nResult TargetsMetadata: \r\n[{<\/span>map[instance:192.168.212.101:8001 job:kong] kong_nginx_http_current_connections gauge Number of HTTP connections }<\/span> {<\/span>map[instance:192.168.212.101:8001 job:kong] kong_nginx_metric_errors_total counter Number of nginx-lua-prometheus errors }<\/span> {<\/span>map[instance:192.168.212.101:8001 job:kong] kong_bandwidth counter Total bandwidth in <\/span>bytes consumed per service in <\/span>Kong }<\/span> {<\/span>map[instance:192.168.212.101:8001 job:kong] kong_datastore_reachable gauge Datastore reachable from Kong, 0 is unreachable }<\/span> {<\/span>map[instance:192.168.212.101:8001 job:kong] kong_http_status counter HTTP status codes per service in <\/span>Kong }<\/span> {<\/span>map[instance:192.168.212.101:8001 job:kong] kong_latency histogram Latency added by Kong, total request time <\/span>and upstream latency for <\/span>each service in <\/span>Kong }]<\/span>\r\nResult QueryRange: \r\nkong_nginx_http_current_connections{<\/span>instance<\/span>=<\/span>\"192.168.212.101:8001\"<\/span>, job<\/span>=<\/span>\"kong\"<\/span>, state<\/span>=<\/span>\"accepted\"<\/span>}<\/span> =><\/span>\r\n14 @[1572358764.66]\r\n14 @[1572358824.66]\r\n14 @[1572358884.66]\r\n\u30fb\u30fb\u30fb\u7565\r\n17 @[1572361464.66]\r\n17 @[1572361524.66]\r\n17 @[1572361584.66]\r\nkong_nginx_http_current_connections{<\/span>instance<\/span>=<\/span>\"192.168.212.101:8001\"<\/span>, job<\/span>=<\/span>\"kong\"<\/span>, state<\/span>=<\/span>\"active\"<\/span>}<\/span> =><\/span>\r\n3 @[1572358764.66]\r\n3 @[1572358824.66]\r\n\u30fb\u30fb\u30fb\u7565\r\n3 @[1572359724.66]\r\n3 @[1572359784.66]\r\n\u30fb\u30fb\u30fb\u7565\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u4f5c\u4e3a\u4ecePrometheus\u670d\u52a1\u5668\u63d0\u53d6\u6570\u636e\u7684\u4e00\u79cd\u65b9\u5f0f\uff0cPrometheus\u63d0\u4f9b\u4e86HTTP API\u3002 \u6211\u53d1\u73b0\u6709\u5f88\u591a […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43380","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4eceGolang\u7a0b\u5e8f\u4e2d\u8c03\u7528Prometheus API\uff0c\u4ee5\u63d0\u53d6\u7531\u5bfc\u51fa\u5668\u6536\u96c6\u7684\u6307\u6807\u4fe1\u606f - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4ecegolang\u7a0b\u5e8f\u4e2d\u8c03\u7528prometheus-api\uff0c\u4ee5\u63d0\u53d6\u7531\u5bfc\u51fa\u5668\u6536\u96c6\u7684\u6307\u6807\u4fe1\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4eceGolang\u7a0b\u5e8f\u4e2d\u8c03\u7528Prometheus API\uff0c\u4ee5\u63d0\u53d6\u7531\u5bfc\u51fa\u5668\u6536\u96c6\u7684\u6307\u6807\u4fe1\u606f\" \/>\n<meta property=\"og:description\" content=\"\u4f5c\u4e3a\u4ecePrometheus\u670d\u52a1\u5668\u63d0\u53d6\u6570\u636e\u7684\u4e00\u79cd\u65b9\u5f0f\uff0cPrometheus\u63d0\u4f9b\u4e86HTTP API\u3002 \u6211\u53d1\u73b0\u6709\u5f88\u591a […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4ecegolang\u7a0b\u5e8f\u4e2d\u8c03\u7528prometheus-api\uff0c\u4ee5\u63d0\u53d6\u7531\u5bfc\u51fa\u5668\u6536\u96c6\u7684\u6307\u6807\u4fe1\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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