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'",[610,642,598],{"class":643},"sfazB",[610,645,646],{"class":620},"'\n",[610,648,650],{"class":612,"line":649},2,[610,651,653],{"emptyLinePlaceholder":652},true,"\n",[610,655,657,660,662,666,669],{"class":612,"line":656},3,[610,658,659],{"class":624},"console",[610,661,554],{"class":620},[610,663,665],{"class":664},"s2Zo4","log",[610,667,668],{"class":624},"(EVLOG_VERSION)    ",[610,670,672],{"class":671},"sHwdD","\u002F\u002F → \"2.16.0\"\n",[610,674,676,678,680,682,685],{"class":612,"line":675},4,[610,677,659],{"class":624},[610,679,554],{"class":620},[610,681,665],{"class":664},[610,683,684],{"class":624},"(EVLOG_USER_AGENT) ",[610,686,687],{"class":671},"\u002F\u002F → \"evlog\u002F2.16.0\"\n",[556,689,691],{"id":690},"overriding-from-a-custom-drain","Overriding from a custom drain",[471,693,694,695,701,702,705,706,709,710,705,712,715],{},"Adapters built with ",[696,697,698],"a",{"href":426},[499,699,700],{},"defineHttpDrain()"," automatically pass the drain ",[499,703,704],{},"name"," as ",[499,707,708],{},"source"," and the canonical ",[499,711,506],{},[499,713,714],{},"userAgent",". You don't need to think about it.",[471,717,718,719,722,723,725,726,728,729,731],{},"When you build a drain on top of ",[499,720,721],{},"httpPost"," from ",[499,724,598],{}," directly (e.g. for a fork with a different identity, or for a vendor that wants its own UA), pass ",[499,727,708],{}," and\u002For ",[499,730,714],{}," to override:",[601,733,735],{"className":603,"code":734,"language":605,"meta":606,"style":606},"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",[499,736,737,756,760,773,793,822,839,853,870,889,909,918],{"__ignoreMap":606},[610,738,739,741,743,746,748,750,752,754],{"class":612,"line":613},[610,740,617],{"class":616},[610,742,621],{"class":620},[610,744,745],{"class":624}," httpPost",[610,747,634],{"class":620},[610,749,637],{"class":616},[610,751,640],{"class":620},[610,753,598],{"class":643},[610,755,646],{"class":620},[610,757,758],{"class":612,"line":649},[610,759,653],{"emptyLinePlaceholder":652},[610,761,762,765,767,770],{"class":612,"line":656},[610,763,764],{"class":616},"await",[610,766,745],{"class":664},[610,768,769],{"class":624},"(",[610,771,772],{"class":620},"{\n",[610,774,775,779,782,784,787,790],{"class":612,"line":675},[610,776,778],{"class":777},"swJcz","  url",[610,780,781],{"class":620},":",[610,783,640],{"class":620},[610,785,786],{"class":643},"https:\u002F\u002Fmy-platform.example.com\u002Fingest",[610,788,789],{"class":620},"'",[610,791,792],{"class":620},",\n",[610,794,796,799,801,803,805,808,810,812,814,817,819],{"class":612,"line":795},5,[610,797,798],{"class":777},"  headers",[610,800,781],{"class":620},[610,802,621],{"class":620},[610,804,640],{"class":620},[610,806,807],{"class":777},"Content-Type",[610,809,789],{"class":620},[610,811,781],{"class":620},[610,813,640],{"class":620},[610,815,816],{"class":643},"application\u002Fjson",[610,818,789],{"class":620},[610,820,821],{"class":620}," },\n",[610,823,825,828,830,832,835,837],{"class":612,"line":824},6,[610,826,827],{"class":777},"  body",[610,829,781],{"class":620},[610,831,640],{"class":620},[610,833,834],{"class":643},"[]",[610,836,789],{"class":620},[610,838,792],{"class":620},[610,840,842,845,847,851],{"class":612,"line":841},7,[610,843,844],{"class":777},"  timeout",[610,846,781],{"class":620},[610,848,850],{"class":849},"sbssI"," 5000",[610,852,792],{"class":620},[610,854,856,859,861,863,866,868],{"class":612,"line":855},8,[610,857,858],{"class":777},"  label",[610,860,781],{"class":620},[610,862,640],{"class":620},[610,864,865],{"class":643},"my-platform",[610,867,789],{"class":620},[610,869,792],{"class":620},[610,871,873,876,878,880,882,884,886],{"class":612,"line":872},9,[610,874,875],{"class":777},"  source",[610,877,781],{"class":620},[610,879,640],{"class":620},[610,881,865],{"class":643},[610,883,789],{"class":620},[610,885,628],{"class":620},[610,887,888],{"class":671},"           \u002F\u002F sent as X-Evlog-Source\n",[610,890,892,895,897,899,902,904,906],{"class":612,"line":891},10,[610,893,894],{"class":777},"  userAgent",[610,896,781],{"class":620},[610,898,640],{"class":620},[610,900,901],{"class":643},"my-fork\u002F1.0",[610,903,789],{"class":620},[610,905,628],{"class":620},[610,907,908],{"class":671},"        \u002F\u002F overrides the default User-Agent\n",[610,910,912,915],{"class":612,"line":911},11,[610,913,914],{"class":671},"  \u002F\u002F userAgent: false,",[610,916,917],{"class":671},"             \u002F\u002F suppress the header entirely\n",[610,919,921,924],{"class":612,"line":920},12,[610,922,923],{"class":620},"}",[610,925,926],{"class":624},")\n",[556,928,930],{"id":929},"next-steps","Next steps",[561,932,933,943],{},[564,934,935,938,939,942],{},[696,936,937],{"href":426},"Custom Drains"," — ",[499,940,941],{},"defineHttpDrain"," injects identity headers automatically",[564,944,945,948],{},[696,946,947],{"href":431},"Drain Pipeline"," — wrap any drain in batch + retry while keeping identity headers",[950,951,952],"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":606,"searchDepth":649,"depth":649,"links":954},[955,956,957,958],{"id":558,"depth":649,"text":559},{"id":591,"depth":649,"text":592},{"id":690,"depth":649,"text":691},{"id":929,"depth":649,"text":930},"Every drain request sent by evlog is tagged with User-Agent and X-Evlog-Source headers so receivers can identify and triage the traffic. Override or suppress them when your custom drain needs different identity.","md",[962],{"label":937,"icon":428,"to":426,"color":963,"variant":964},"neutral","subtle",{},{"title":420,"icon":423},{"title":466,"description":959},"UpSbbTef47vMxtu4Pph48SjBF68OaEPBZOLoGhRxGZU",[970,972],{"title":416,"path":417,"stem":418,"description":971,"icon":64,"children":-1},"Decide post-hoc whether to keep an event with full knowledge of its outcome (status, duration, errors). The opposite of head sampling — keep all errors and slow requests while throwing away healthy noise.",{"title":425,"path":426,"stem":427,"description":973,"icon":428,"children":-1},"Build a drain for any backend without a built-in adapter — defineHttpDrain for HTTP destinations, defineDrain for any other transport. Standardized config resolution, retries, timeouts, and identity headers handled for you.",1784215269913]