Add slack message factory for worker

This allows a worker to communicate its context when sending messages to slack (e.g. username, age).
lsst-sqre · Mar 11, 2024 · 39ff808 · 39ff808
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diff --git a/requirements/dev.txt b/requirements/dev.txt
@@ -302,9 +302,9 @@ jsonschema-specifications==2023.12.1 \
     --hash=sha256:48a76787b3e70f5ed53f1160d2b81f586e4ca6d1548c5de7085d1682674764cc \
     --hash=sha256:87e4fdf3a94858b8a2ba2778d9ba57d8a9cafca7c7489c46ba0d30a8bc6a9c3c
     # via jsonschema
-latexcodec==2.0.1 \
-    --hash=sha256:2aa2551c373261cefe2ad3a8953a6d6533e68238d180eb4bb91d7964adb3fe9a \
-    --hash=sha256:c277a193638dc7683c4c30f6684e3db728a06efb0dc9cf346db8bd0aa6c5d271
+latexcodec==3.0.0 \
+    --hash=sha256:6f3477ad5e61a0a99bd31a6a370c34e88733a6bad9c921a3ffcfacada12f41a7 \
+    --hash=sha256:917dc5fe242762cc19d963e6548b42d63a118028cdd3361d62397e3b638b6bc5
     # via pybtex
 linkify-it-py==2.0.3 \
     --hash=sha256:68cda27e162e9215c17d786649d1da0021a451bdc436ef9e0fa0ba5234b9b048 \
@@ -388,34 +388,34 @@ mdurl==0.1.2 \
     --hash=sha256:84008a41e51615a49fc9966191ff91509e3c40b939176e643fd50a5c2196b8f8 \
     --hash=sha256:bb413d29f5eea38f31dd4754dd7377d4465116fb207585f97bf925588687c1ba
     # via markdown-it-py
-mypy==1.8.0 \
-    --hash=sha256:028cf9f2cae89e202d7b6593cd98db6759379f17a319b5faf4f9978d7084cdc6 \
-    --hash=sha256:2afecd6354bbfb6e0160f4e4ad9ba6e4e003b767dd80d85516e71f2e955ab50d \
-    --hash=sha256:2b5b6c721bd4aabaadead3a5e6fa85c11c6c795e0c81a7215776ef8afc66de02 \
-    --hash=sha256:42419861b43e6962a649068a61f4a4839205a3ef525b858377a960b9e2de6e0d \
-    --hash=sha256:42c6680d256ab35637ef88891c6bd02514ccb7e1122133ac96055ff458f93fc3 \
-    --hash=sha256:485a8942f671120f76afffff70f259e1cd0f0cfe08f81c05d8816d958d4577d3 \
-    --hash=sha256:4c886c6cce2d070bd7df4ec4a05a13ee20c0aa60cb587e8d1265b6c03cf91da3 \
-    --hash=sha256:4e6d97288757e1ddba10dd9549ac27982e3e74a49d8d0179fc14d4365c7add66 \
-    --hash=sha256:4ef4be7baf08a203170f29e89d79064463b7fc7a0908b9d0d5114e8009c3a259 \
-    --hash=sha256:51720c776d148bad2372ca21ca29256ed483aa9a4cdefefcef49006dff2a6835 \
-    --hash=sha256:52825b01f5c4c1c4eb0db253ec09c7aa17e1a7304d247c48b6f3599ef40db8bd \
-    --hash=sha256:538fd81bb5e430cc1381a443971c0475582ff9f434c16cd46d2c66763ce85d9d \
-    --hash=sha256:5c1538c38584029352878a0466f03a8ee7547d7bd9f641f57a0f3017a7c905b8 \
-    --hash=sha256:6ff8b244d7085a0b425b56d327b480c3b29cafbd2eff27316a004f9a7391ae07 \
-    --hash=sha256:7178def594014aa6c35a8ff411cf37d682f428b3b5617ca79029d8ae72f5402b \
-    --hash=sha256:720a5ca70e136b675af3af63db533c1c8c9181314d207568bbe79051f122669e \
-    --hash=sha256:7f1478736fcebb90f97e40aff11a5f253af890c845ee0c850fe80aa060a267c6 \
-    --hash=sha256:855fe27b80375e5c5878492f0729540db47b186509c98dae341254c8f45f42ae \
-    --hash=sha256:8963b83d53ee733a6e4196954502b33567ad07dfd74851f32be18eb932fb1cb9 \
-    --hash=sha256:9261ed810972061388918c83c3f5cd46079d875026ba97380f3e3978a72f503d \
-    --hash=sha256:99b00bc72855812a60d253420d8a2eae839b0afa4938f09f4d2aa9bb4654263a \
-    --hash=sha256:ab3c84fa13c04aeeeabb2a7f67a25ef5d77ac9d6486ff33ded762ef353aa5592 \
-    --hash=sha256:afe3fe972c645b4632c563d3f3eff1cdca2fa058f730df2b93a35e3b0c538218 \
-    --hash=sha256:d19c413b3c07cbecf1f991e2221746b0d2a9410b59cb3f4fb9557f0365a1a817 \
-    --hash=sha256:df9824ac11deaf007443e7ed2a4a26bebff98d2bc43c6da21b2b64185da011c4 \
-    --hash=sha256:e46f44b54ebddbeedbd3d5b289a893219065ef805d95094d16a0af6630f5d410 \
-    --hash=sha256:f5ac9a4eeb1ec0f1ccdc6f326bcdb464de5f80eb07fb38b5ddd7b0de6bc61e55
+mypy==1.9.0 \
+    --hash=sha256:0235391f1c6f6ce487b23b9dbd1327b4ec33bb93934aa986efe8a9563d9349e6 \
+    --hash=sha256:190da1ee69b427d7efa8aa0d5e5ccd67a4fb04038c380237a0d96829cb157913 \
+    --hash=sha256:2418488264eb41f69cc64a69a745fad4a8f86649af4b1041a4c64ee61fc61129 \
+    --hash=sha256:3a3c007ff3ee90f69cf0a15cbcdf0995749569b86b6d2f327af01fd1b8aee9dc \
+    --hash=sha256:3cc5da0127e6a478cddd906068496a97a7618a21ce9b54bde5bf7e539c7af974 \
+    --hash=sha256:48533cdd345c3c2e5ef48ba3b0d3880b257b423e7995dada04248725c6f77374 \
+    --hash=sha256:49c87c15aed320de9b438ae7b00c1ac91cd393c1b854c2ce538e2a72d55df150 \
+    --hash=sha256:4d3dbd346cfec7cb98e6cbb6e0f3c23618af826316188d587d1c1bc34f0ede03 \
+    --hash=sha256:571741dc4194b4f82d344b15e8837e8c5fcc462d66d076748142327626a1b6e9 \
+    --hash=sha256:587ce887f75dd9700252a3abbc9c97bbe165a4a630597845c61279cf32dfbf02 \
+    --hash=sha256:5d741d3fc7c4da608764073089e5f58ef6352bedc223ff58f2f038c2c4698a89 \
+    --hash=sha256:5e6061f44f2313b94f920e91b204ec600982961e07a17e0f6cd83371cb23f5c2 \
+    --hash=sha256:61758fabd58ce4b0720ae1e2fea5cfd4431591d6d590b197775329264f86311d \
+    --hash=sha256:653265f9a2784db65bfca694d1edd23093ce49740b2244cde583aeb134c008f3 \
+    --hash=sha256:68edad3dc7d70f2f17ae4c6c1b9471a56138ca22722487eebacfd1eb5321d612 \
+    --hash=sha256:81a10926e5473c5fc3da8abb04119a1f5811a236dc3a38d92015cb1e6ba4cb9e \
+    --hash=sha256:85ca5fcc24f0b4aeedc1d02f93707bccc04733f21d41c88334c5482219b1ccb3 \
+    --hash=sha256:a260627a570559181a9ea5de61ac6297aa5af202f06fd7ab093ce74e7181e43e \
+    --hash=sha256:aceb1db093b04db5cd390821464504111b8ec3e351eb85afd1433490163d60cd \
+    --hash=sha256:b685154e22e4e9199fc95f298661deea28aaede5ae16ccc8cbb1045e716b3e04 \
+    --hash=sha256:d357423fa57a489e8c47b7c85dfb96698caba13d66e086b412298a1a0ea3b0ed \
+    --hash=sha256:d4d5ddc13421ba3e2e082a6c2d74c2ddb3979c39b582dacd53dd5d9431237185 \
+    --hash=sha256:e49499be624dead83927e70c756970a0bc8240e9f769389cdf5714b0784ca6bf \
+    --hash=sha256:e54396d70be04b34f31d2edf3362c1edd023246c82f1730bbf8768c28db5361b \
+    --hash=sha256:f88566144752999351725ac623471661c9d1cd8caa0134ff98cceeea181789f4 \
+    --hash=sha256:f8a67616990062232ee4c3952f41c779afac41405806042a8126fe96e098419f \
+    --hash=sha256:fe28657de3bfec596bbeef01cb219833ad9d38dd5393fc649f4b366840baefe6
     # via -r requirements/dev.in
 mypy-extensions==1.0.0 \
     --hash=sha256:4392f6c0eb8a5668a69e23d168ffa70f0be9ccfd32b5cc2d26a34ae5b844552d \
@@ -429,9 +429,9 @@ nodeenv==1.8.0 \
     --hash=sha256:d51e0c37e64fbf47d017feac3145cdbb58836d7eee8c6f6d3b6880c5456227d2 \
     --hash=sha256:df865724bb3c3adc86b3876fa209771517b0cfe596beff01a92700e0e8be4cec
     # via pre-commit
-packaging==23.2 \
-    --hash=sha256:048fb0e9405036518eaaf48a55953c750c11e1a1b68e0dd1a9d62ed0c092cfc5 \
-    --hash=sha256:8c491190033a9af7e1d931d0b5dacc2ef47509b34dd0de67ed209b5203fc88c7
+packaging==24.0 \
+    --hash=sha256:2ddfb553fdf02fb784c234c7ba6ccc288296ceabec964ad2eae3777778130bc5 \
+    --hash=sha256:eb82c5e3e56209074766e6885bb04b8c38a0c015d0a30036ebe7ece34c9989e9
     # via
     #   -c requirements/main.txt
     #   pydata-sphinx-theme
@@ -562,16 +562,16 @@ pygments==2.17.2 \
 pylatexenc==2.10 \
     --hash=sha256:3dd8fd84eb46dc30bee1e23eaab8d8fb5a7f507347b23e5f38ad9675c84f40d3
     # via documenteer
-pytest==8.0.2 \
-    --hash=sha256:d4051d623a2e0b7e51960ba963193b09ce6daeb9759a451844a21e4ddedfc1bd \
-    --hash=sha256:edfaaef32ce5172d5466b5127b42e0d6d35ebbe4453f0e3505d96afd93f6b096
+pytest==8.1.1 \
+    --hash=sha256:2a8386cfc11fa9d2c50ee7b2a57e7d898ef90470a7a34c4b949ff59662bb78b7 \
+    --hash=sha256:ac978141a75948948817d360297b7aae0fcb9d6ff6bc9ec6d514b85d5a65c044
     # via
     #   -r requirements/dev.in
     #   pytest-asyncio
     #   pytest-cov
-pytest-asyncio==0.23.5 \
-    --hash=sha256:3a048872a9c4ba14c3e90cc1aa20cbc2def7d01c7c8db3777ec281ba9c057675 \
-    --hash=sha256:4e7093259ba018d58ede7d5315131d21923a60f8a6e9ee266ce1589685c89eac
+pytest-asyncio==0.23.5.post1 \
+    --hash=sha256:30f54d27774e79ac409778889880242b0403d09cabd65b727ce90fe92dd5d80e \
+    --hash=sha256:b9a8806bea78c21276bc34321bbf234ba1b2ea5b30d9f0ce0f2dea45e4685813
     # via -r requirements/dev.in
 pytest-cov==4.1.0 \
     --hash=sha256:3904b13dfbfec47f003b8e77fd5b589cd11904a21ddf1ab38a64f204d6a10ef6 \
@@ -756,24 +756,24 @@ rpds-py==0.18.0 \
     # via
     #   jsonschema
     #   referencing
-ruff==0.3.0 \
-    --hash=sha256:0886184ba2618d815067cf43e005388967b67ab9c80df52b32ec1152ab49f53a \
-    --hash=sha256:128265876c1d703e5f5e5a4543bd8be47c73a9ba223fd3989d4aa87dd06f312f \
-    --hash=sha256:19eacceb4c9406f6c41af806418a26fdb23120dfe53583df76d1401c92b7c14b \
-    --hash=sha256:23dbb808e2f1d68eeadd5f655485e235c102ac6f12ad31505804edced2a5ae77 \
-    --hash=sha256:2f7dbba46e2827dfcb0f0cc55fba8e96ba7c8700e0a866eb8cef7d1d66c25dcb \
-    --hash=sha256:3ef655c51f41d5fa879f98e40c90072b567c666a7114fa2d9fe004dffba00932 \
-    --hash=sha256:5da894a29ec018a8293d3d17c797e73b374773943e8369cfc50495573d396933 \
-    --hash=sha256:755c22536d7f1889be25f2baf6fedd019d0c51d079e8417d4441159f3bcd30c2 \
-    --hash=sha256:7deb528029bacf845bdbb3dbb2927d8ef9b4356a5e731b10eef171e3f0a85944 \
-    --hash=sha256:9343690f95710f8cf251bee1013bf43030072b9f8d012fbed6ad702ef70d360a \
-    --hash=sha256:a1f3ed501a42f60f4dedb7805fa8d4534e78b4e196f536bac926f805f0743d49 \
-    --hash=sha256:b08b356d06a792e49a12074b62222f9d4ea2a11dca9da9f68163b28c71bf1dd4 \
-    --hash=sha256:cc30a9053ff2f1ffb505a585797c23434d5f6c838bacfe206c0e6cf38c921a1e \
-    --hash=sha256:d0d3d7ef3d4f06433d592e5f7d813314a34601e6c5be8481cccb7fa760aa243e \
-    --hash=sha256:dd73fe7f4c28d317855da6a7bc4aa29a1500320818dd8f27df95f70a01b8171f \
-    --hash=sha256:e1e0d4381ca88fb2b73ea0766008e703f33f460295de658f5467f6f229658c19 \
-    --hash=sha256:e3a4a6d46aef0a84b74fcd201a4401ea9a6cd85614f6a9435f2d33dd8cefbf83
+ruff==0.3.2 \
+    --hash=sha256:0ac06a3759c3ab9ef86bbeca665d31ad3aa9a4b1c17684aadb7e61c10baa0df4 \
+    --hash=sha256:0c1bdd9920cab5707c26c8b3bf33a064a4ca7842d91a99ec0634fec68f9f4037 \
+    --hash=sha256:1231eacd4510f73222940727ac927bc5d07667a86b0cbe822024dd00343e77e9 \
+    --hash=sha256:2c6d613b19e9a8021be2ee1d0e27710208d1603b56f47203d0abbde906929a9b \
+    --hash=sha256:5f65103b1d76e0d600cabd577b04179ff592064eaa451a70a81085930e907d0b \
+    --hash=sha256:77f2612752e25f730da7421ca5e3147b213dca4f9a0f7e0b534e9562c5441f01 \
+    --hash=sha256:967978ac2d4506255e2f52afe70dda023fc602b283e97685c8447d036863a302 \
+    --hash=sha256:9966b964b2dd1107797be9ca7195002b874424d1d5472097701ae8f43eadef5d \
+    --hash=sha256:9bd640a8f7dd07a0b6901fcebccedadeb1a705a50350fb86b4003b805c81385a \
+    --hash=sha256:b74c3de9103bd35df2bb05d8b2899bf2dbe4efda6474ea9681280648ec4d237d \
+    --hash=sha256:b83d17ff166aa0659d1e1deaf9f2f14cbe387293a906de09bc4860717eb2e2da \
+    --hash=sha256:bb875c6cc87b3703aeda85f01c9aebdce3d217aeaca3c2e52e38077383f7268a \
+    --hash=sha256:be75e468a6a86426430373d81c041b7605137a28f7014a72d2fc749e47f572aa \
+    --hash=sha256:c8439338a6303585d27b66b4626cbde89bb3e50fa3cae86ce52c1db7449330a7 \
+    --hash=sha256:de8b480d8379620cbb5ea466a9e53bb467d2fb07c7eca54a4aa8576483c35d36 \
+    --hash=sha256:f380be9fc15a99765c9cf316b40b9da1f6ad2ab9639e551703e581a5e6da6745 \
+    --hash=sha256:fa78ec9418eb1ca3db392811df3376b46471ae93792a81af2d1cbb0e5dcb5142
     # via -r requirements/dev.in
 scriv==1.5.1 \
     --hash=sha256:30ae9ff8d144f8e0cf394c4e1d379542f1b3823767642955b54ec40dc00b32b6 \
@@ -783,7 +783,6 @@ six==1.16.0 \
     --hash=sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926 \
     --hash=sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254
     # via
-    #   latexcodec
     #   pybtex
     #   sphinxcontrib-redoc
 smmap==5.0.1 \
@@ -899,9 +898,9 @@ tomlkit==0.12.4 \
     --hash=sha256:5cd82d48a3dd89dee1f9d64420aa20ae65cfbd00668d6f094d7578a78efbb77b \
     --hash=sha256:7ca1cfc12232806517a8515047ba66a19369e71edf2439d0f5824f91032b6cc3
     # via documenteer
-types-pyyaml==6.0.12.12 \
-    --hash=sha256:334373d392fde0fdf95af5c3f1661885fa10c52167b14593eb856289e1855062 \
-    --hash=sha256:c05bc6c158facb0676674b7f11fe3960db4f389718e19e62bd2b84d6205cfd24
+types-pyyaml==6.0.12.20240311 \
+    --hash=sha256:a9e0f0f88dc835739b0c1ca51ee90d04ca2a897a71af79de9aec5f38cb0a5342 \
+    --hash=sha256:b845b06a1c7e54b8e5b4c683043de0d9caf205e7434b3edc678ff2411979b8f6
     # via -r requirements/dev.in
 typing-extensions==4.10.0 \
     --hash=sha256:69b1a937c3a517342112fb4c6df7e72fc39a38e7891a5730ed4985b5214b5475 \
@@ -921,9 +920,9 @@ urllib3==2.2.1 \
     # via
     #   documenteer
     #   requests
-uvicorn==0.27.1 \
-    --hash=sha256:3d9a267296243532db80c83a959a3400502165ade2c1338dea4e67915fd4745a \
-    --hash=sha256:5c89da2f3895767472a35556e539fd59f7edbe9b1e9c0e1c99eebeadc61838e4
+uvicorn==0.28.0 \
+    --hash=sha256:6623abbbe6176204a4226e67607b4d52cc60ff62cda0ff177613645cefa2ece1 \
+    --hash=sha256:cab4473b5d1eaeb5a0f6375ac4bc85007ffc75c3cc1768816d9e5d589857b067
     # via
     #   -c requirements/main.txt
     #   -r requirements/dev.in

diff --git a/requirements/main.in b/requirements/main.in
@@ -19,3 +19,4 @@ pydantic_settings
 PyYAML
 httpx
 websockets
+humanize
diff --git a/requirements/main.txt b/requirements/main.txt
@@ -30,9 +30,7 @@ arq==0.25.0 \
 async-timeout==4.0.3 \
     --hash=sha256:4640d96be84d82d02ed59ea2b7105a0f7b33abe8703703cd0ab0bf87c427522f \
     --hash=sha256:7405140ff1230c310e51dc27b3145b9092d659ce68ff733fb0cefe3ee42be028
-    # via
-    #   aioredis
-    #   redis
+    # via aioredis
 attrs==23.2.0 \
     --hash=sha256:935dc3b529c262f6cf76e50877d35a4bd3c1de194fd41f47a2b7ae8f19971f30 \
     --hash=sha256:99b87a485a5820b23b879f04c2305b44b951b502fd64be915879d77a7e8fc6f1
@@ -321,15 +319,19 @@ httpx==0.27.0 \
     # via
     #   -r requirements/main.in
     #   safir
+humanize==4.9.0 \
+    --hash=sha256:582a265c931c683a7e9b8ed9559089dea7edcf6cc95be39a3cbc2c5d5ac2bcfa \
+    --hash=sha256:ce284a76d5b1377fd8836733b983bfb0b76f1aa1c090de2566fcf008d7f6ab16
+    # via -r requirements/main.in
 idna==3.6 \
     --hash=sha256:9ecdbbd083b06798ae1e86adcbfe8ab1479cf864e4ee30fe4e46a003d12491ca \
     --hash=sha256:c05567e9c24a6b9faaa835c4821bad0590fbb9d5779e7caa6e1cc4978e7eb24f
     # via
     #   anyio
     #   httpx
-packaging==23.2 \
-    --hash=sha256:048fb0e9405036518eaaf48a55953c750c11e1a1b68e0dd1a9d62ed0c092cfc5 \
-    --hash=sha256:8c491190033a9af7e1d931d0b5dacc2ef47509b34dd0de67ed209b5203fc88c7
+packaging==24.0 \
+    --hash=sha256:2ddfb553fdf02fb784c234c7ba6ccc288296ceabec964ad2eae3777778130bc5 \
+    --hash=sha256:eb82c5e3e56209074766e6885bb04b8c38a0c015d0a30036ebe7ece34c9989e9
     # via gunicorn
 pycparser==2.21 \
     --hash=sha256:8ee45429555515e1f6b185e78100aea234072576aa43ab53aefcae078162fca9 \
@@ -495,9 +497,9 @@ pyyaml==6.0.1 \
     # via
     #   -r requirements/main.in
     #   uvicorn
-redis[hiredis]==5.0.2 \
-    --hash=sha256:3f82cc80d350e93042c8e6e7a5d0596e4dd68715babffba79492733e1f367037 \
-    --hash=sha256:4caa8e1fcb6f3c0ef28dba99535101d80934b7d4cd541bbb47f4a3826ee472d1
+redis[hiredis]==5.0.3 \
+    --hash=sha256:4973bae7444c0fbed64a06b87446f79361cb7e4ec1538c022d696ed7a5015580 \
+    --hash=sha256:5da9b8fe9e1254293756c16c008e8620b3d15fcc6dde6babde9541850e72a32d
     # via arq
 safir[arq]==5.2.1 \
     --hash=sha256:1b61cc72881ddfb66e1f84b6c34ca7e062f27b5669b9d1d07377ebd117ce3ebf \
@@ -532,9 +534,9 @@ uritemplate==4.1.1 \
     --hash=sha256:4346edfc5c3b79f694bccd6d6099a322bbeb628dbf2cd86eea55a456ce5124f0 \
     --hash=sha256:830c08b8d99bdd312ea4ead05994a38e8936266f84b9a7878232db50b044e02e
     # via gidgethub
-uvicorn[standard]==0.27.1 \
-    --hash=sha256:3d9a267296243532db80c83a959a3400502165ade2c1338dea4e67915fd4745a \
-    --hash=sha256:5c89da2f3895767472a35556e539fd59f7edbe9b1e9c0e1c99eebeadc61838e4
+uvicorn[standard]==0.28.0 \
+    --hash=sha256:6623abbbe6176204a4226e67607b4d52cc60ff62cda0ff177613645cefa2ece1 \
+    --hash=sha256:cab4473b5d1eaeb5a0f6375ac4bc85007ffc75c3cc1768816d9e5d589857b067
     # via -r requirements/main.in
 uvloop==0.19.0 \
     --hash=sha256:0246f4fd1bf2bf702e06b0d45ee91677ee5c31242f39aab4ea6fe0c51aedd0fd \

diff --git a/src/noteburst/worker/main.py b/src/noteburst/worker/main.py
@@ -2,9 +2,11 @@
 
 from __future__ import annotations
 
+from datetime import UTC, datetime
 from typing import Any, ClassVar
 
 import httpx
+import humanize
 import structlog
 from arq import cron
 from safir.logging import configure_logging
@@ -103,9 +105,15 @@ async def startup(ctx: dict[Any, Any]) -> None:
 
     if "slack" in ctx:
         slack_client = ctx["slack"]
-        await slack_client.post(
-            SlackMessage(
-                message="Noteburst worker started",
+
+        date_created = datetime.now(tz=UTC)
+
+        def create_message(message: str) -> SlackMessage:
+            now = datetime.now(tz=UTC)
+            age = now - date_created
+
+            return SlackMessage(
+                message=message,
                 fields=[
                     SlackTextField(
                         heading="Username",
@@ -116,12 +124,21 @@ async def startup(ctx: dict[Any, Any]) -> None:
                         text=config.image_selector,
                     ),
                     SlackTextField(heading="Image", text=image_info.name),
+                    SlackTextField(
+                        heading="Age", text=humanize.naturaldelta(age)
+                    ),
                 ],
             )
+
+        ctx["slack_message_factory"] = create_message
+
+        # Make a start-up message
+        await slack_client.post(
+            ctx["slack_message_factory"]("Noteburst worker started")
         )
 
 
-async def shutdown(ctx: dict[Any, Any]) -> None:
+async def shutdown(ctx: dict[Any, Any]) -> None:  # noqa: PLR0912
     """Clean up the worker context on shutdown."""
     if "logger" in ctx:
         logger = ctx["logger"]
@@ -171,6 +188,14 @@ async def shutdown(ctx: dict[Any, Any]) -> None:
 
     logger.info("Worker shutdown complete.")
 
+    if "slack" in ctx and "slack_message_factory" in ctx:
+        slack_client = ctx["slack"]
+        await slack_client.post(
+            ctx["slack_message_factory"](
+                "Noteburst worker shut down complete."
+            )
+        )
+
 
 # For info on ignoring the type checking here, see
 # https://github.com/samuelcolvin/arq/issues/249
-Original file line number
+Diff line change
@@ Expand Up / @@ -19,3 +19,4 @@ pydantic_settings @@
     PyYAML
     httpx
     websockets
+    humanize