* storage ops refactor:
- create StorageOps class similar to other ops classes
- init storages list in StorageOps, no longer require lookup up default storages via CrawlManager
- convert all storage functions to members, add storageops to operator
- remove unused params, ensure crawl exists for rollover restart
- add env var to determine if using local minio to use correct endpoint URL
* crawls /seeds endpoint: just return empty list if not a crawl (eg. upload)
* crawlmanager: remove unused code, rename check_storage -> has_storage
* store execution time in operator:
- rename isNewCrash -> isNewExit, crashTime -> exitTime
- keep track of exitCode
- add execTime counter, increment when state has a 'finishedAt' and 'startedAt' state
- ensure pods are complete before deleting
- store 'crawlExecSeconds' on crawl and org levels, add to Crawl, CrawlOut, Organization models
* support for fast cancel:
- set redis ':canceled' key to immediately cancel crawl
- delete crawl pods to ensure pod exits immediately
- in finalizer, don't wait for pods to complete when canceling (but still check if terminated)
- add currentTime in pod.status.running.startedAt times for all existing pods
- logging: log exec time, missing finishedAt
- logging: don't log exit code 11 (interrupt due to time/size limits) as a crash
* don't wait for pods completed on failed with existing browsertrix-crawler image
---------
Co-authored-by: Tessa Walsh <tessa@bitarchivist.net>
* keep track of per pod status on crawljob:
- crashes time, and reason
- 'used' vs 'allocated' resources
- 'percent' used / allocated
* crawl log errors: log error when crawler crashes via OOM, either via redis error log
or to console
* add initial autoscaling support!
- detect if metrics server is available via K8SApi.is_pod_metrics_available()
- if available, use metrics for 'used' fields
- if no metrics, set memory used for redis only (using redis apis)
- allow overriding memory and cpu via newMemory and newCpu settings on pod status
- scale memory / cpu based on newMemory and newCpu setting
- templates: update jinja templates to allow restarting crawler and redis with new resources
- ci: enable metrics-server on k3d, microk8s and nightly k3d ci runs
* roles: cleanup unused roles, add permissions for listing metrics
* stats for running crawls:
- update in db via operator
- avoids losing stats if redis pod happens to be done
- tradeoff is more db access in operator, but less extra connections to redis + already
loading from db in backend
- size stat: ensure size of previous files is added to the stats
* crawler deployment tweaks:
- adjust cpu/mem per browser
- add --headless flag to configmap to use new headless mode by default!
- Applies user permissions check before deleting anything in all /delete endpoints
- Shuts down running crawls before deleting anything in /all-crawls/delete as well as /crawls/delete
- Splits delete_list.crawl_ids into crawls and upload lists at same time as checks in /all-crawls/delete
- Updates frontend notification message to Only org owners can delete other users' archived items. when a crawler user attempts to delete another users' archived items
- Adds "Logs" tab to workflow detail
- Shows error logs in expandable section in "Watch" tab
- Show corresponding message (no logs yet or logs temporarily unavailable) when `/errors` returns 503 based on crawl state
- text tweaks: use error logs instead of logs, change 'crawl start' -> 'crawl continue' in log message
---------
Co-authored-by: Ilya Kreymer <ikreymer@gmail.com>
- Remove config.seeds from workflow and crawl detail endpoints
- Add new paginated GET /crawls/{crawl_id}/seeds and /crawlconfigs/{cid}/seeds endpoints to retrieve seeds for a crawl or workflow
- Include firstSeed in GET /crawlconfigs/{cid} endpoint (was missing before)
- Modify frontend to fetch seeds from new /seeds endpoints with loading indicator
---------
Co-authored-by: Tessa Walsh <tessa@bitarchivist.net>
* store usernames (createdByName, modifiedByName, startedByName) in db for workflows
* store userName for userid for crawls in db
* update output models to return usernames
* add migration 0018 to add usernames to existing crawls and crawlconfigs
* updated tests for crawl and config usernames
* use async for to iterate over crawls and crawlconfigs
---------
Co-authored-by: Ilya Kreymer <ikreymer@gmail.com>
- limit how many exclusion matches are returned at once
- option to specify 'offset', 'limit' and return 'nextOffset' for further pagination
- set page limit to 1000 by default
* Add bytes stored per type to org and metrics
The org now tracks bytesStored by type of crawl, uploads, and browser profiles
in addition to the total, and returns these values in the org metrics endpoint.
A migration is added to precompute these values in existing deployments.
In addition, all /metrics storage values are now returned solely as bytes, as
the GB form wasn't being used in the frontend and is unnecessary.
* Improve deletion of multiple archived item types via `/all-crawls` delete endpoint
- Update `/all-crawls` delete test to check that org and workflow size values
are correct following deletion.
- Fix bug where it was always assumed only one crawl was deleted per cid
and size was not tracked per cid
- Add type check within delete_crawls
* Remove config from list endpoints
- Remove config field from workflow and crawl list endpoints
- Add seedCount to CrawlConfigOut on backend and Workflow on frontend
- Refactor CrawlConfig and CrawlConfigOut to extend CrawlConfigCore + CrawlConfigAdditional
- Refactor workflow list in frontend to use firstSeed and seedCount
- Frontend uses ListWorkflow type which is Omit<Workflow, "config">
* remove almost all standalone functions and move them back into ops member functions
* operator now has access to all the ops classes as well
* keep two standalone functions used only in migrations
---------
Co-authored-by: Tessa Walsh <tessa@bitarchivist.net>
* Implement in backend
- Track bytesStored in org
- Add migration to pre-calculate based on size of crawlfiles and profilefiles
- Add methods to increase or decrease org storage when crawl or profile files
are added or deleted
- Include storageQuotaReached boolean in API responses that alter storage
- Don't start new crawls and fail uploads if storage quota reached
* Implement in frontend
- Add to orgs-list quotas
- Update org's storageQuotaReached based on backend endpoint responses
- Disable buttons when storage quota is met
- Show toast notification when attempting to run a crawl when org
storage quota is met
Initial set of backend API for event webhook notifications for the following events:
* Crawl started (including boolean indicating if crawl was scheduled)
* Crawl finished
* Upload finished
* Archived item added to collection
* Archived item removed from collection
Configuration of URLs is done via /api/orgs/<oid>/event-webhook-urls. If a URL is configured for a given event, a webhook notification is added to the database and then attempted to be sent (up to a total of 5 tries per overall attempt, with an increasing backoff between, implemented via use of the backoff library, which supports async).
webhook status available via /api/orgs/<oid>/webhooks
(Additional testing + potential fastapi integration left in separate follow-ups
Fixes#1041
Backend:
- add 'maxCrawlSize' to models and crawljob spec
- add 'MAX_CRAWL_SIZE' to configmap
- add maxCrawlSize to new crawlconfig + update APIs
- operator: gracefully stop crawl if current size (from stats) exceeds maxCrawlSize
- tests: add max crawl size tests
Frontend:
- Add Max Crawl Size text box Limits tab
- Users enter max crawl size in GB, convert to bytes
- Add BYTES_PER_GB as constant for converting to bytes
- docs: Crawl Size Limit to user guide workflow setup section
Operator Refactor:
- use 'status.stopping' instead of 'crawl.stopping' to indicate crawl is being stopped, as changing later has no effect in operator
- add is_crawl_stopping() to return if crawl is being stopped, based on crawl.stopping or size or time limit being reached
- crawlerjob status: store byte size under 'size', human readable size under 'sizeHuman' for clarity
- size stat always exists so remove unneeded conditional (defaults to 0)
- store raw byte size in 'size', human readable size in 'sizeHuman'
Charts:
- subchart: update crawlerjob crd in btrix-crds to show status.stopping instead of spec.stopping
- subchart: show 'sizeHuman' property instead of 'size'
- bump subchart version to 0.1.1
---------
Co-authored-by: Ilya Kreymer <ikreymer@gmail.com>
* fix latest crawl (lastRun) sort:
- don't cast 'started' value to string when setting as starting crawl time (regression from #937)
- caused incorrect sorting as finished crawl time was a datetime, while starting crawl time was a string
- move updated config crawl info in one place, simplify to avoid returning started time altogether, just set directly
- pass mdb crawlconfigs and crawls collections directly to add_new_crawl() function
- fixes#1108
* Add dropdown menu containing 'Remove from Collection' to archived items in collection view (#1110)
- Enables users to remove an item from a collection from the collection detail view - menu was previously missing
- Fixes: #1102 (missing dropdown menu) by making use of the inactive menu trigger button.
- Updates collection items page size to match "Archived Items" page size (20 items per page)
---------
Co-authored-by: sua yoo <sua@webrecorder.org>
- rename 'collections' -> 'collectionIds', adding migration 0014
- only populate 'collections' array with {name, id} pair for get_crawl() / single archived item
path, but not for aggregate/list methods
- remove Crawl.get_crawl(), redundant with BaseCrawl.get_crawl() version
- ensure _files_to_resources returns an empty [] instead of none if empty (matching BaseCrawl.get_crawl() behavior to Crawl.get_crawl())
- tests: update tests to use collectionIds for id list, add 'collections' for {name, id} test
- frontend: change Crawl object to have collectionIds instead of collections
---------
Co-authored-by: Ilya Kreymer <ikreymer@gmail.com>
* fix redis connection leaks + exclusions error: (fixes#1065)
- use contextmanager for accessing redis to ensure redis.close() is always called
- add get_redis_client() to k8sapi to ensure unified place to get redis client
- use connectionpool.from_url() until redis 5.0.0 is released to ensure auto close and single client settings are applied
- also: catch invalid regex passed to re.compile() in queue regex check, return 400 instead of 500 for invalid regex
- redis requirements: bump to 5.0.0rc2
- all-crawls list endpoint filters now conform to 'Standardize list controls for archived items #1025' and URL decode values before passing them in
- Uploads list endpoint now includes all all-crawls filters relevant to uploads
- An all-crawls/search-values endpoint is added to support searching across all archived item types
- Crawl configuration names are now copied to the crawl when the crawl is created, and crawl names and descriptions are now editable via the backend API (note: this will require frontend changes as well to make them editable via the UI)
- Migration added to copy existing config names for active configs into their associated crawls. This migration has been tested in a local deployment
- New statuses generate-wacz, uploading-wacz, and pending-wait are added when relevant to tests to ensure that they pass
- Tests coverage added for all new all-crawls endpoints, filters, and sort values
operator: ensure transitions from each of these states is supported, including to 'waiting_capacity'
add extra check on stopping to avoid transitioning back to a running state after crawl is finished
ui: add states to UI display, localization, add as active states
fixes#263
* Move all pydantic models to models.py to avoid circular dependencies
* Include automated crawl details in all-crawls GET endpoints
- ensure /all-crawls endpoint resolves names / firstSeed data same as /crawls endpoint for crawls to ensure consistent frontend display. fields added in get and list all-crawl endpoints for automated
crawls only:
- cid
- name
- description
- firstSeed
- seedCount
- profileName
* Add automated crawl fields to list all-crawls test
* Uncomment mongo readinessProbe
* cleanup CrawlOutWithResources:
- remove 'files' from output model, only resources should be returned
- add _files_to_resources() to simplify computing presigned 'resources' from raw 'files'
- update upload tests to be more consistent, 'files' never present, 'errors' always none
---------
Co-authored-by: Ilya Kreymer <ikreymer@gmail.com>
* basecrawl refactor: make crawls db more generic, supporting different types of 'base crawls': crawls, uploads, manual archives
- move shared functionality to basecrawl.py
- create a base BaseCrawl object, which contains start / finish time, metadata and files array
- create BaseCrawlOps, base class for CrawlOps, which supports base crawl deletion, querying and collection add/remove
* uploads api: (part of #929)
- new UploadCrawl object which extends BaseCrawl, has name and description
- support multipart form data data upload to /uploads/formdata
- support streaming upload of a single file via /uploads/stream, using botocore multipart upload to upload to s3-endpoint in parts
- require 'filename' param to set upload filename for streaming uploads (otherwise use form data names)
- sanitize filename, place uploads in /uploads/<uuid>/<sanitized-filename>-<random>.wacz
- uploads have internal id 'upload-<uuid>'
- create UploadedCrawl object with CrawlFiles pointing to the newly uploaded files, set state to 'complete'
- handle upload failures, abort multipart upload
- ensure uploads added within org bucket path
- return id / added when adding new UploadedCrawl
- support listing, deleting, and patch /uploads
- support upload details via /replay.json to support for replay
- add support for 'replaceId=<id>', which would remove all previous files in upload after new upload succeeds. if replaceId doesn't exist, create new upload. (only for stream endpoint so far).
- support patching upload metadata: notes, tags and name on uploads (UpdateUpload extends UpdateCrawl and adds 'name')
* base crawls api: Add /all-crawls list and delete endpoints for all crawl types (without resources)
- support all-crawls/<id>/replay.json with resources
- Use ListCrawlOut model for /all-crawls list endpoint
- Extend BaseCrawlOut from ListCrawlOut, add type
- use 'type: crawl' for crawls and 'type: upload' for uploads
- migration: ensure all previous crawl objects / missing type are set to 'type: crawl'
- indexes: add db indices on 'type' field and with 'type' field and oid, cid, finished, state
* tests: add test for multipart and streaming upload, listing uploads, deleting upload
- add sample WACZ for upload testing: 'example.wacz' and 'example-2.wacz'
* collections: support adding and remove both crawls and uploads via base crawl
- include collection_ids in /all-crawls list
- collections replay.json can include both crawls and uploads
bump version to 1.6.0-beta.2
---------
Co-authored-by: Tessa Walsh <tessa@bitarchivist.net>
* Make API add and update method returns consistent
- Updates return {"updated": True}
- Adds return {"added": True}
- Both can additionally have other fields as needed, e.g. id or name
- remove Profile response model, as returning added / id only
- reformat
---------
Co-authored-by: Ilya Kreymer <ikreymer@gmail.com>
wabac.js will reload the replay.json on 403 with new token (will be in next version of wabac.js)
presign urls: make presign timeout configurable (in minutes), defaults to 60 mins
dockerfile: fix configuring RWP_BASE_URL
* crawls list: unset errors in crawls list response to avoid very large responses #872
* Remove errors from crawl replay.json
* Add tests to ensure errors are excluded from crawl GET endpoints
* Update tests to accept None for errors
---------
Co-authored-by: Tessa Walsh <tessa@bitarchivist.net>
concurrent crawl limits: (addresses #866)
- support limits on concurrent crawls that can be run within a single org
- change 'waiting' state to 'waiting_org_limit' for concurrent crawl limit and 'waiting_capacity' for capacity-based
limits
orgs:
- add 'maxConcurrentCrawl' to new 'quotas' object on orgs
- add /quotas endpoint for updating quotas object
operator:
- add all crawljobs as related, appear to be returned in creation order
- operator: if concurrent crawl limit set, ensures current job is in the first N set of crawljobs (as provided via 'related' list of crawljob objects) before it can proceed to 'starting', otherwise set to 'waiting_org_limit'
- api: add org /quotas endpoint for configuring quotas
- remove 'new' state, always start with 'starting'
- crawljob: add 'oid' to crawljob spec and label for easier querying
- more stringent state transitions: add allowed_from to set_state()
- ensure state transitions only happened from allowed states, while failed/canceled can happen from any state
- ensure finished and state synched from db if transition not allowed
- add crawl indices by oid and cid
frontend:
- show different waiting states on frontend: 'Waiting (Crawl Limit) and 'Waiting (At Capacity)'
- add gear icon on orgs admin page
- and initial popup for setting org quotas, showing all properties from org 'quotas' object
tests:
- add concurrent crawl limit nightly tests
- fix state waiting -> waiting_capacity
- ci: add logging of operator output on test failure
* optimizations:
- rename update_crawl_config_stats to stats_recompute_all, only used in migration to fetch all crawls
and do a full recompute of all file sizes
- add stats_recompute_last to only get last crawl by size, increment total size by specified amount, and incr/decr number of crawls
- Update migration 0007 to use stats_recompute_all
- Add isCrawlRunning, lastCrawlStopping, and lastRun to
stats_recompute_last
- Increment crawlSuccessfulCount in stats_recompute_last
* operator/crawls:
- operator: keep track of filesAddedSize in redis as well
- rename update_crawl to update_crawl_state_if_changed() and only update
if state is different, otherwise return false
- ensure mark_finished() operations only occur if crawl is state has changed
- don't clear 'stopping' flag, can track if crawl was stopped
- state always starts with "starting", don't reset to starting
tests:
- Add test for incremental workflow stats updating
- don't clear stopping==true, indicates crawl was manually stopped
---------
Co-authored-by: Ilya Kreymer <ikreymer@gmail.com>
* Track collections in Crawl rather than crawls in Collection
* Add delete collection API endpoint and tests
* Precompute collection crawlCount, pageCount, and tags and add them to
GET collection responses
* Add modified field to Collection
* Update collection replay.json method
* Make add and remove crawls accept list of crawl ids
* Auto-add new workflow crawls to collections when they successfully
complete via CrawlConfig.autoAddCollections field
* Move long-running post-crawl operator tasks into asyncio task
* Make CrawlConfig.autoAddCollections updatable via /update API endpoint
* tests:
- fix cancel crawl test by ensuring state is not running or waiting
- fix stop crawl test by ensuring stop is only initiated after at least one page has been crawled,
otherwise result may be failed, as no crawl data has been crawled yet (separate fix in crawler to avoid loop if stopped
before any data written webrecorder/browsertrix-crawler#314)
- bump page limit to 4 for tests to ensure crawl is partially complete, not fully complete when stopping
- allow canceled or partial_complete due to race condition
* chart: bump frontend limits in default, not just for tests (addresses #780)
* crawl stop before starting:
- if crawl stopped before it started, mark as canceled
- add test for stopping immediately, which should result in 'canceled' crawl
- attempt to increase resync interval for immediate failure
- nightly tests: increase page limit to test timeout
* backend:
- detect stopped-before-start crawl as 'failed' instead of 'done'
- stats: return stats counters as int instead of string
* Precompute config crawl stats
Includes a database migration to move preciously dynamically computed
crawl stats for workflows into the CrawlConfig model.
* Add lastRun sorting option and enable it by default
* Add modified as final sort key to order non-run workflows
* Remove currCrawl* fields and update frontend accordingly
* Add isCrawlRunning field to backend and use in frontend
* stopping fix: backend fixes for #836
- sets 'stopping' field on crawl when crawl is being stopped (both via db and on k8s object)
- k8s: show 'stopping' as part of crawljob object, update subchart
- set 'currCrawlStopping' on workflow
- support old and new browsertrix-crawler stopping keys
- tests: add tests for new stopping state, also test canceling crawl (disable test for stopping crawl, currently failing)
- catch redis error when getting stats
operator: additional optimizations:
- run pvc removal as background task
- catch any exceptions in finalizer stage (eg. if db is down), return false until finalizer completes
* Precompute config crawl stats
* Includes a database migration to move preciously dynamically computed crawl stats for workflows into the CrawlConfig model.
* Add crawls.finished descending index
* Add last crawl fields to workflow tests
* Btrixjobs Operator - Phase 1 (#679)
- add metacontroller and custom crds
- add main_op entrypoint for operator
* Btrix Operator Crawl Management (#767)
* operator backend:
- run operator api in separate container but in same pod, with WEB_CONCURRENCY=1
- operator creates statefulsets and services for CrawlJob and ProfileJob
- operator: use service hook endpoint, set port in values.yaml
* crawls working with CrawlJob
- jobs start with 'crawljob-' prefix
- update status to reflect current crawl state
- set sync time to 10 seconds by default, overridable with 'operator_resync_seconds'
- mark crawl as running, failed, complete when finished
- store finished status when crawl is complete
- support updating scale, forcing rollover, stop via patching CrawlJob
- support cancel via deletion
- requires hack to content-length for patching custom resources
- auto-delete of CrawlJob via 'ttlSecondsAfterFinished'
- also delete pvcs until autodelete supported via statefulset (k8s >1.27)
- ensure filesAdded always set correctly, keep counter in redis, add to status display
- optimization: attempt to reduce automerging, by reusing volumeClaimTemplates from existing children, as these may have additional props added
- add add_crawl_errors_to_db() for storing crawl errors from redis '<crawl>:e' key to mongodb when crawl is finished/failed/canceled
- add .status.size to display human-readable crawl size, if available (from webrecorder/browsertrix-crawler#291)
- support new page size, >0.9.0 and old page size key (changed in webrecorder/browsertrix-crawler#284)
* support for scheduled jobs!
- add main_scheduled_job entrypoint to run scheduled jobs
- add crawl_cron_job.yaml template for declaring CronJob
- CronJobs moved to default namespace
* operator manages ProfileJobs:
- jobs start with 'profilejob-'
- update expiry time by updating ProfileJob object 'expireTime' while profile is active
* refactor/cleanup:
- remove k8s package
- merge k8sman and basecrawlmanager into crawlmanager
- move templates, k8sapi, utils into root package
- delete all *_job.py files
- remove dt_now, ts_now from crawls, now in utils
- all db operations happen in crawl/crawlconfig/org files
- move shared crawl/crawlconfig/org functions that use the db to be importable directly,
including get_crawl_config, add_new_crawl, inc_crawl_stats
* role binding: more secure setup, don't allow crawler namespace any k8s permissions
- move cronjobs to be created in default namespace
- grant default namespace access to create cronjobs in default namespace
- remove role binding from crawler namespace
* additional tweaks to templates:
- templates: split crawler and redis statefulset into separate yaml file (in case need to load one or other separately)
* stats / redis optimization:
- don't update stats in mongodb on every operator sync, only when crawl is finished
- for api access, read stats directly from redis to get up-to-date stats
- move get_page_stats() to utils, add get_redis_url() to k8sapi to unify access
* Add migration for operator changes
- Update configmap for crawl configs with scale > 1 or
crawlTimeout > 0 and schedule exists to recreate CronJobs
- add option to rerun last migration, enabled via env var and by running helm with --set=rerun_last_migration=1
* subcharts: move crawljob and profilejob crds to separate subchart, as this seems best way to guarantee proper install order with + update on upgrade with helm, add built btrix-crds-0.1.0.tgz subchart
- metacontroller: use release from ghcr, add metacontroller-helm-v4.10.1.tgz subchart
* backend api fixes
- ensure changing scale of crawl also updates it in the db
- crawlconfigs: add 'currCrawlSize' and 'lastCrawlSize' to crawlconfig api
---------
Co-authored-by: D. Lee <leepro@gmail.com>
Co-authored-by: Tessa Walsh <tessa@bitarchivist.net>
* Add crawl errors endpoint
If this endpoint is called while the crawl is running, errors are
pulled directly from redis.
If this endpoint is called when the crawl is finished, errors are
pulled from mongodb, where they're written when crawls complete.
* Add nightly backend test for errors endpoint
* Add errors for failed and cancelled crawls to mongo
Co-authored-by: Ilya Kreymer <ikreymer@users.noreply.github.com>
* Re-implement collections, storing crawlIds in collection
* Return collections for crawl endpoints and filter on coll name
* Remove crawl from all collections when deleted
* Revert get_collection_crawls to flat array of resources
* Fix tests
If a crawl is completed, the endpoint streams the logs from the log
files in all of the created WACZ files, sorted by timestamp.
The API endpoint supports filtering by log_level and context whether
the crawl is still running or not.
This is not yet proper streaming because the entire log file is read
into memory before being streamed to the client. We will want to
switch to proper streaming eventually, but are currently blocked by
an aiobotocore bug - see:
https://github.com/aio-libs/aiobotocore/issues/991?#issuecomment-1490737762
* backend: max pages per crawl limit, part of fix for #716:
- set 'max_pages_crawl_limit' in values.yaml, default to 100,000
- if set/non-0, automatically set limit if none provided
- if set/non-0, return 400 if adding config with limit exceeding max limit
- return limit as 'maxPagesPerCrawl' in /api/settings
- api: /all/crawls - add runningOnly=0 to show all crawls, default to 1/true (for more reliable testing)
tests: add test for 'max_pages_per_crawl' setting
- ensure 'limit' can not be set higher than max_pages_per_crawl
- ensure pages crawled is at the limit
- set test limit to max 2 pages
- add settings test
- check for pages.jsonl and extraPages.jsonl when crawling 2 pages
* Re-implement pagination and paginate crawlconfig revs
First step toward simplifying pagination to set us up for sorting
and filtering of list endpoints. This commit removes fastapi-pagination
as a dependency.
* Migrate all HttpUrl seeds to Seeds
This commit also updates the frontend to always use Seeds and to
fix display issues resulting from the change.
* Filter and sort crawls and workflows
Crawls:
- Filter by createdBy (via userid param)
- Filter by state (comma-separated string for multiple values)
- Filter by first_seed, name, description
- Sort by started, finished, fileSize, firstSeed
- Sort descending by default to match frontend
Workflows:
- Filter by createdBy (formerly userid) and modifiedBy
- Filter by first_seed, name, description
- Sort by created, modified, firstSeed, lastCrawlTime
* Add crawlconfigs search-values API endpoint and test
* backend: update queue apis to work with new sorted queue apis (also backwards compatible to existing apis)
designed for browsertrix-crawler 0.9.0-beta.1 but also backwards compatible with older list-based queue as well
