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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","",[569,678,679,717,724,743],{"__ignoreMap":676},[680,681,684,688,692,696,699,702,705,708,711,714],"span",{"class":682,"line":683},"line",1,[680,685,687],{"class":686},"s7zQu","import",[680,689,691],{"class":690},"sMK4o"," {",[680,693,695],{"class":694},"sTEyZ"," EVLOG_USER_AGENT",[680,697,698],{"class":690},",",[680,700,701],{"class":694}," EVLOG_VERSION",[680,703,704],{"class":690}," }",[680,706,707],{"class":686}," from",[680,709,710],{"class":690}," '",[680,712,668],{"class":713},"sfazB",[680,715,716],{"class":690},"'\n",[680,718,720],{"class":682,"line":719},2,[680,721,723],{"emptyLinePlaceholder":722},true,"\n",[680,725,727,730,732,736,739],{"class":682,"line":726},3,[680,728,729],{"class":694},"console",[680,731,624],{"class":690},[680,733,735],{"class":734},"s2Zo4","log",[680,737,738],{"class":694},"(EVLOG_VERSION)    ",[680,740,742],{"class":741},"sHwdD","\u002F\u002F → \"2.16.0\"\n",[680,744,746,748,750,752,755],{"class":682,"line":745},4,[680,747,729],{"class":694},[680,749,624],{"class":690},[680,751,735],{"class":734},[680,753,754],{"class":694},"(EVLOG_USER_AGENT) ",[680,756,757],{"class":741},"\u002F\u002F → \"evlog\u002F2.16.0\"\n",[626,759,761],{"id":760},"overriding-from-a-custom-drain","Overriding from a custom drain",[541,763,764,765,771,772,775,776,779,780,775,782,785],{},"Adapters built with ",[766,767,768],"a",{"href":491},[569,769,770],{},"defineHttpDrain()"," automatically pass the drain ",[569,773,774],{},"name"," as ",[569,777,778],{},"source"," and the canonical ",[569,781,576],{},[569,783,784],{},"userAgent",". You don't need to think about it.",[541,787,788,789,792,793,795,796,798,799,801],{},"When you build a drain on top of ",[569,790,791],{},"httpPost"," from ",[569,794,668],{}," directly (e.g. for a fork with a different identity, or for a vendor that wants its own UA), pass ",[569,797,778],{}," and\u002For ",[569,800,784],{}," to override:",[671,803,805],{"className":673,"code":804,"language":675,"meta":676,"style":676},"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",[569,806,807,826,830,843,863,892,909,923,940,959,979,988],{"__ignoreMap":676},[680,808,809,811,813,816,818,820,822,824],{"class":682,"line":683},[680,810,687],{"class":686},[680,812,691],{"class":690},[680,814,815],{"class":694}," httpPost",[680,817,704],{"class":690},[680,819,707],{"class":686},[680,821,710],{"class":690},[680,823,668],{"class":713},[680,825,716],{"class":690},[680,827,828],{"class":682,"line":719},[680,829,723],{"emptyLinePlaceholder":722},[680,831,832,835,837,840],{"class":682,"line":726},[680,833,834],{"class":686},"await",[680,836,815],{"class":734},[680,838,839],{"class":694},"(",[680,841,842],{"class":690},"{\n",[680,844,845,849,852,854,857,860],{"class":682,"line":745},[680,846,848],{"class":847},"swJcz","  url",[680,850,851],{"class":690},":",[680,853,710],{"class":690},[680,855,856],{"class":713},"https:\u002F\u002Fmy-platform.example.com\u002Fingest",[680,858,859],{"class":690},"'",[680,861,862],{"class":690},",\n",[680,864,866,869,871,873,875,878,880,882,884,887,889],{"class":682,"line":865},5,[680,867,868],{"class":847},"  headers",[680,870,851],{"class":690},[680,872,691],{"class":690},[680,874,710],{"class":690},[680,876,877],{"class":847},"Content-Type",[680,879,859],{"class":690},[680,881,851],{"class":690},[680,883,710],{"class":690},[680,885,886],{"class":713},"application\u002Fjson",[680,888,859],{"class":690},[680,890,891],{"class":690}," },\n",[680,893,895,898,900,902,905,907],{"class":682,"line":894},6,[680,896,897],{"class":847},"  body",[680,899,851],{"class":690},[680,901,710],{"class":690},[680,903,904],{"class":713},"[]",[680,906,859],{"class":690},[680,908,862],{"class":690},[680,910,912,915,917,921],{"class":682,"line":911},7,[680,913,914],{"class":847},"  timeout",[680,916,851],{"class":690},[680,918,920],{"class":919},"sbssI"," 5000",[680,922,862],{"class":690},[680,924,926,929,931,933,936,938],{"class":682,"line":925},8,[680,927,928],{"class":847},"  label",[680,930,851],{"class":690},[680,932,710],{"class":690},[680,934,935],{"class":713},"my-platform",[680,937,859],{"class":690},[680,939,862],{"class":690},[680,941,943,946,948,950,952,954,956],{"class":682,"line":942},9,[680,944,945],{"class":847},"  source",[680,947,851],{"class":690},[680,949,710],{"class":690},[680,951,935],{"class":713},[680,953,859],{"class":690},[680,955,698],{"class":690},[680,957,958],{"class":741},"           \u002F\u002F sent as X-Evlog-Source\n",[680,960,962,965,967,969,972,974,976],{"class":682,"line":961},10,[680,963,964],{"class":847},"  userAgent",[680,966,851],{"class":690},[680,968,710],{"class":690},[680,970,971],{"class":713},"my-fork\u002F1.0",[680,973,859],{"class":690},[680,975,698],{"class":690},[680,977,978],{"class":741},"        \u002F\u002F overrides the default User-Agent\n",[680,980,982,985],{"class":682,"line":981},11,[680,983,984],{"class":741},"  \u002F\u002F userAgent: false,",[680,986,987],{"class":741},"             \u002F\u002F suppress the header entirely\n",[680,989,991,994],{"class":682,"line":990},12,[680,992,993],{"class":690},"}",[680,995,996],{"class":694},")\n",[626,998,1000],{"id":999},"next-steps","Next steps",[631,1002,1003,1013],{},[634,1004,1005,1008,1009,1012],{},[766,1006,1007],{"href":491},"Custom Drains"," — ",[569,1010,1011],{},"defineHttpDrain"," injects identity headers automatically",[634,1014,1015,1018],{},[766,1016,1017],{"href":496},"Drain Pipeline"," — wrap any drain in batch + retry while keeping identity headers",[1020,1021,1022],"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":676,"searchDepth":719,"depth":719,"links":1024},[1025,1026,1027,1028],{"id":628,"depth":719,"text":629},{"id":661,"depth":719,"text":662},{"id":760,"depth":719,"text":761},{"id":999,"depth":719,"text":1000},"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",[1032],{"label":1007,"icon":493,"to":491,"color":1033,"variant":1034},"neutral","subtle",{},{"title":485,"icon":488},{"title":536,"description":1029},"gfvY7aCTYjht3OcMEXXfgha2PlhYsOnqpwm73GY9l_s",[1040,1042],{"title":481,"path":482,"stem":483,"description":1041,"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":490,"path":491,"stem":492,"description":1043,"icon":493,"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.",1786743670288]