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",[564,618,566],{},".",[621,622,624],"h2",{"id":623},"why","Why",[626,627,628,636,645],"ul",{},[629,630,631,635],"li",{},[632,633,634],"strong",{},"Triage at the receiver."," Quickly distinguish evlog traffic from other clients in the receiving system's logs.",[629,637,638,641,642,644],{},[632,639,640],{},"Track adapter usage and version drift."," Roll out a new evlog version and watch the ",[564,643,566],{}," distribution change centrally.",[629,646,647,650,651,653],{},[632,648,649],{},"Debug a specific drain."," Filter by ",[564,652,579],{}," to isolate one adapter's behavior in a sea of incoming requests.",[621,655,657],{"id":656},"reading-the-version","Reading the version",[536,659,660,661,664],{},"Both constants are exported from ",[564,662,663],{},"evlog\u002Ftoolkit"," so your drain (or your receiver) can reference the canonical values:",[666,667,672],"pre",{"className":668,"code":669,"language":670,"meta":671,"style":671},"language-ts shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { EVLOG_USER_AGENT, EVLOG_VERSION } from 'evlog\u002Ftoolkit'\n\nconsole.log(EVLOG_VERSION)    \u002F\u002F → \"2.16.0\"\nconsole.log(EVLOG_USER_AGENT) \u002F\u002F → \"evlog\u002F2.16.0\"\n","ts","",[564,673,674,712,719,738],{"__ignoreMap":671},[675,676,679,683,687,691,694,697,700,703,706,709],"span",{"class":677,"line":678},"line",1,[675,680,682],{"class":681},"s7zQu","import",[675,684,686],{"class":685},"sMK4o"," {",[675,688,690],{"class":689},"sTEyZ"," EVLOG_USER_AGENT",[675,692,693],{"class":685},",",[675,695,696],{"class":689}," EVLOG_VERSION",[675,698,699],{"class":685}," }",[675,701,702],{"class":681}," from",[675,704,705],{"class":685}," '",[675,707,663],{"class":708},"sfazB",[675,710,711],{"class":685},"'\n",[675,713,715],{"class":677,"line":714},2,[675,716,718],{"emptyLinePlaceholder":717},true,"\n",[675,720,722,725,727,731,734],{"class":677,"line":721},3,[675,723,724],{"class":689},"console",[675,726,619],{"class":685},[675,728,730],{"class":729},"s2Zo4","log",[675,732,733],{"class":689},"(EVLOG_VERSION)    ",[675,735,737],{"class":736},"sHwdD","\u002F\u002F → \"2.16.0\"\n",[675,739,741,743,745,747,750],{"class":677,"line":740},4,[675,742,724],{"class":689},[675,744,619],{"class":685},[675,746,730],{"class":729},[675,748,749],{"class":689},"(EVLOG_USER_AGENT) ",[675,751,752],{"class":736},"\u002F\u002F → \"evlog\u002F2.16.0\"\n",[621,754,756],{"id":755},"overriding-from-a-custom-drain","Overriding from a custom drain",[536,758,759,760,766,767,770,771,774,775,770,777,780],{},"Adapters built with ",[761,762,763],"a",{"href":488},[564,764,765],{},"defineHttpDrain()"," automatically pass the drain ",[564,768,769],{},"name"," as ",[564,772,773],{},"source"," and the canonical ",[564,776,571],{},[564,778,779],{},"userAgent",". You don't need to think about it.",[536,782,783,784,787,788,790,791,793,794,796],{},"When you build a drain on top of ",[564,785,786],{},"httpPost"," from ",[564,789,663],{}," directly (e.g. for a fork with a different identity, or for a vendor that wants its own UA), pass ",[564,792,773],{}," and\u002For ",[564,795,779],{}," to override:",[666,798,800],{"className":668,"code":799,"language":670,"meta":671,"style":671},"import { httpPost } from 'evlog\u002Ftoolkit'\n\nawait httpPost({\n  url: 'https:\u002F\u002Fmy-platform.example.com\u002Fingest',\n  headers: { 'Content-Type': 'application\u002Fjson' },\n  body: '[]',\n  timeout: 5000,\n  label: 'my-platform',\n  source: 'my-platform',           \u002F\u002F sent as X-Evlog-Source\n  userAgent: 'my-fork\u002F1.0',        \u002F\u002F overrides the default User-Agent\n  \u002F\u002F userAgent: false,             \u002F\u002F suppress the header entirely\n})\n",[564,801,802,821,825,838,858,887,904,918,935,954,974,983],{"__ignoreMap":671},[675,803,804,806,808,811,813,815,817,819],{"class":677,"line":678},[675,805,682],{"class":681},[675,807,686],{"class":685},[675,809,810],{"class":689}," httpPost",[675,812,699],{"class":685},[675,814,702],{"class":681},[675,816,705],{"class":685},[675,818,663],{"class":708},[675,820,711],{"class":685},[675,822,823],{"class":677,"line":714},[675,824,718],{"emptyLinePlaceholder":717},[675,826,827,830,832,835],{"class":677,"line":721},[675,828,829],{"class":681},"await",[675,831,810],{"class":729},[675,833,834],{"class":689},"(",[675,836,837],{"class":685},"{\n",[675,839,840,844,847,849,852,855],{"class":677,"line":740},[675,841,843],{"class":842},"swJcz","  url",[675,845,846],{"class":685},":",[675,848,705],{"class":685},[675,850,851],{"class":708},"https:\u002F\u002Fmy-platform.example.com\u002Fingest",[675,853,854],{"class":685},"'",[675,856,857],{"class":685},",\n",[675,859,861,864,866,868,870,873,875,877,879,882,884],{"class":677,"line":860},5,[675,862,863],{"class":842},"  headers",[675,865,846],{"class":685},[675,867,686],{"class":685},[675,869,705],{"class":685},[675,871,872],{"class":842},"Content-Type",[675,874,854],{"class":685},[675,876,846],{"class":685},[675,878,705],{"class":685},[675,880,881],{"class":708},"application\u002Fjson",[675,883,854],{"class":685},[675,885,886],{"class":685}," },\n",[675,888,890,893,895,897,900,902],{"class":677,"line":889},6,[675,891,892],{"class":842},"  body",[675,894,846],{"class":685},[675,896,705],{"class":685},[675,898,899],{"class":708},"[]",[675,901,854],{"class":685},[675,903,857],{"class":685},[675,905,907,910,912,916],{"class":677,"line":906},7,[675,908,909],{"class":842},"  timeout",[675,911,846],{"class":685},[675,913,915],{"class":914},"sbssI"," 5000",[675,917,857],{"class":685},[675,919,921,924,926,928,931,933],{"class":677,"line":920},8,[675,922,923],{"class":842},"  label",[675,925,846],{"class":685},[675,927,705],{"class":685},[675,929,930],{"class":708},"my-platform",[675,932,854],{"class":685},[675,934,857],{"class":685},[675,936,938,941,943,945,947,949,951],{"class":677,"line":937},9,[675,939,940],{"class":842},"  source",[675,942,846],{"class":685},[675,944,705],{"class":685},[675,946,930],{"class":708},[675,948,854],{"class":685},[675,950,693],{"class":685},[675,952,953],{"class":736},"           \u002F\u002F sent as X-Evlog-Source\n",[675,955,957,960,962,964,967,969,971],{"class":677,"line":956},10,[675,958,959],{"class":842},"  userAgent",[675,961,846],{"class":685},[675,963,705],{"class":685},[675,965,966],{"class":708},"my-fork\u002F1.0",[675,968,854],{"class":685},[675,970,693],{"class":685},[675,972,973],{"class":736},"        \u002F\u002F overrides the default User-Agent\n",[675,975,977,980],{"class":677,"line":976},11,[675,978,979],{"class":736},"  \u002F\u002F userAgent: false,",[675,981,982],{"class":736},"             \u002F\u002F suppress the header entirely\n",[675,984,986,989],{"class":677,"line":985},12,[675,987,988],{"class":685},"}",[675,990,991],{"class":689},")\n",[621,993,995],{"id":994},"next-steps","Next steps",[626,997,998,1008],{},[629,999,1000,1003,1004,1007],{},[761,1001,1002],{"href":488},"Custom Drains"," — ",[564,1005,1006],{},"defineHttpDrain"," injects identity headers automatically",[629,1009,1010,1012],{},[761,1011,492],{"href":493}," — wrap any drain in batch + retry while keeping identity headers",[1014,1015,1016],"style",{},"html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}",{"title":671,"searchDepth":714,"depth":714,"links":1018},[1019,1020,1021,1022],{"id":623,"depth":714,"text":624},{"id":656,"depth":714,"text":657},{"id":755,"depth":714,"text":756},{"id":994,"depth":714,"text":995},"Every drain request carries User-Agent and X-Evlog-Source so receivers can triage the traffic. Override or suppress them when you need to.","md",[1026],{"label":1002,"icon":490,"to":488,"color":1027,"variant":1028},"neutral","subtle",{},{"title":482,"icon":485},{"title":531,"description":1023},"iKl1lLZZIxWxGl0BZAinJBuHmeHlSk6iuaYlZue1Za0",[1034,1036],{"title":477,"path":478,"stem":479,"description":1035,"icon":480,"children":-1},"Decide after the fact whether to keep an event, knowing its status, duration, and errors. Keep every error, throw away healthy noise.",{"title":487,"path":488,"stem":489,"description":1037,"icon":490,"children":-1},"Build a drain for any backend without a built-in adapter. Config resolution, retries, timeouts, and identity headers are handled for you.",1786794223279]