Decred block explorer, with packages and apps for data collection and storage. Written in Go.
This is the release of dcrdata v4.0.0. Since the last published non-patch release (v3.1.0), the following changes were made:
/block/.../raw and /block/.../header/raw endpoints. These return the hexadecimal encoded serialized bytes of the block or block header./agendas and /agenda/{agendaid} endpoints."hex" JSON field added to several "raw" endpoints (TODO: list endpoints here)"network_name" added to API Status response--compress-api to enable compression in dcrdata's response handlers.The following changes are of most interest to site operators and developers:
insight-limit-rps, max-api-addrs, compress-api
purge-n-blocks, fast-sqlite-purge, pgtimeout, hidepgconfig, addr-cache-cap
proposalsdbfile, politeiaurl
exchange-monitor, disable-exchange, exchange-currency, ratemaster, ratecert
mainnet-link, testnet-link
mempool (it is required), dumpallmptix (was a debug tool)getblockchaininfo RPC is used in many places.gov/agendas and gov/politeia), and the /proposals page.pubsub package, including related packages (pubsub/psclient and pubsub/types) and a demo client app (pubsub/democlient). pubsub's main types are PubSubHub and WebsocketHub. PubSubHub manages the collection and distribution of block chain and mempool data. WebsocketHub and its event loop manage all websocket client connections. psclient defines a Client type that can help writing apps that connect to a dcrdata pub-sub server.mempool package has expanded functionality as a central hub for mempool data. explorer and pubsub now get their mempool updates from the mempool package's MempoolMonitor type. explorerUI and PubSubHub implement the MempoolDataSaver interface.exchanges package that implements an exchange rate data collection bot.dcrrates package and rateserver app for running a remote exchange data bot with one ore more dcrdata instances as clients.testutil/apiload package for load testing the dcrdata APIs.db/cache package for caching address data. Presently used in dcrpg.chainMonitor in the blockdata package replaced BlockConnectedSync with ConnectBlock. It is no longer necessary to run the BlockConnectedHandler goroutine.dcrpg (dcrdata's PostgreSQL interface) changes:
dcrpg table versions are now 3.10.0 (dcrdata v3.1 had tables at version 3.5.5).ChainDB queries have a query timeout now, and a cancelable context.Context.db/cache) and ticket pool data.TIMESTAMPTZ instead of INT64. Time fields of Go structs in api/types are changed to the new TimeDef type. Tables: addresses, vins, blocks, transactions.chainwork column (TEXT) ADDED to the blocks table.extra_data, merkle_root, stake_root, and final_state columns are REMOVED from the blocks table.agendas table scheme is completely new. The old table is dropped and recreated from scratch.agenda_votes table.block_time column (TIMESTAMPTZ) ADDED to the votes table.testing table.dcrpg now uses dcrjson/v2 and rpcclient/v2 modules.dcrsqlite changes:
WiredDB.WiredDB will request a shutdown with a provided function if the "database is locked" error is encountered on a table write operation.UnconfirmedTxnsForAddress is moved from dcrsqlite to rpcutils.hash is the new primary key. The is_mainchain and is_valid columns are added. Ability to import side chain data from dcrd also added.explorer.New now takes a config struct, ExplorerConfig.Summarized by number of commits:
3 Ademu Enyo Anthony
76 buck54321
23 David Hill
1 Jamie Holdstock
160 Jonathan Chappelow
2 Macaulay Davies
28 Migwi Ndung'u
2 Wisdom Arerosuoghene
23 ZeroASIC
1 degeri
25 gozart1
1 jujuhar
394 changed files with 47,963 additions and 19,205 deletions (yes, that is enormous!): https://github.com/decred/dcrdata/compare/v3.1.0...v4.0.0
This is patch release 2 of the dcrdata 3.1 series.
Fixes:
This is patch release 1 of the dcrdata 3.1 series.
Fixes:
IMPORTANT NOTES:
This is the release of dcrdata v3.1.0. Since the last published non-patch release (v3.0.0), the following changes were made:
Build with Go 1.11 modules, defining dcrdata as v3 module. (2f68351, 5f24e74f, 789129d, 44406ef6, 92ff8a23)
Support only Go v1.11. (70ed11e, 3beacda)
Major initial sync performance improvements. (d01def5a3, 636cfa5b)
Add netparams package for access to network service port numbers.
New version scheme with "appPrerelease" and "appBuild" info to generate version strings like v3.1.0-release or v3.1.1-pre+dev. (cc0e85c) This matches the version scheme now in use by dcrd and dcrwallet. The build syntax for dcrdata is as follows:
go build -ldflags "-X github.com/decred/dcrdata/v3/version.appPreRelease= -X github.com/decred/dcrdata/v3/version.appBuild=`git rev-parse --short HEAD`"
Bugs fixed on /agendas page (e54cfa10) and with agendadb (4b074b3)
Improvements to /address page charts, ensuring the group-by interval selected is the most meaningful for the current address. (d105024e)
Add the ability to use environment variables for configuration. (f2903f1a)
All votes, including side chain votes, are included on the mempool page. Votes on blocks other than the best block are highlighted in red. (93b5788)
Votes on the mempool page are given an index according to which ticket is spent. (8a2e2ad3 and b4ae964d)
Basic Dockerfiles. (61a38fb)
Restore next expected ticket price and bounds, like we used to show it. (ba0f9ee)
Support the /sync Insight API endpoint. (aac0885c)
Block page now handles "future" blocks with height not yet reached. (71c1d03)
Side chain support:
/side page (b159166, 706b8aad). /side is a list of side chain blocks with links to them, their parents, and their children, if any. The /block page is updated to indicate if the block is a side chain block, and if it is approved by stakeholders.?ind= URL parameter so that we can use it on the block page to highlight the transaction. (091b91b2, 412dd7ef)Retrieve and import side chain blocks from dcrd via the new getchaintips RPC. (254ecab6, 7adf9bf2, 235ddd8d)
Stake-invalidated blocks page at /rejects (19953f66), and improved stake-invalidation handling. (0dfef89d)
Invalidated transaction support. If a transaction is not known to dcrd, it is because it has been orphaned by a reorg, invalidated via stakeholder disapproval, or both. dcrd will now attempt to get transaction details from the dcrpg database, which may have decoded and recorded the transaction. A message is shown on the transaction page when the transaction is not found in any valid and mainchain block. (2cfeccd2)
Special handling of genesis block coinbase transaction, which is invalid. (10fccfc6) Show an attention symbol in red next to the tx hash. A title (hover text) is shown explaining why it is special. The link points to code (chaincfg/genesis.go).
Concurrency-related fixes in explorer package. (3ae6c99e)
Style invalidated transactions on the block and transactions pages: gray out and change background color of regular transaction table data, including the coinbase, on a block's page. On the blocks list page, indicate invalidated blocks. (8d924bf8)
Improved error handling on /address page. (700d3c50)
Address API no longer returns null for address with no transactions, but an object with an empty slice of transactions. (979872d3)
Accelerate /ticketpool page. (974f78fb, c2160667)
Insight API fixes (34e508d, 36e060db)
Insight API docs (3db503d0, 6580ff2e)
Address page and query performance improvements. (3e42cd1, 08147c3)
Patch valid_mainchain column of addresses table. (078483d7)
Fix the address page for addresses with only unconfirmed transactions. (38c51a14)
Input/output highlighting on the address and transaction pages. To support the highlighting, a new route for identifying the input or output of interest is added: /tx/{txid}/{in|out}/{idx}. The input/output that pairs with the corresponding outputs/inputs in a transaction's view are obtained via queries into the vins table. (60d033d4)
Various sync and startup improvements and fixes. (08f1839f, 97ed3bd1, 769abd21, 59c6fbd8)
dcrpg query maintenance/reorganization. (102df3e5)
Add the ability to show transaction output spending information via ?spends=true on the following API endpoints: /api/tx, /api/tx/decoded, and /api/txs. (e96c9d62)
Prototyping new home page at /nexthome. (694eaee5)
Add a syncing status page that starts up before dcrdata completes syncing with dcrd. (44c8a086, eab8e434)
Security improvements. (5e473a85, 28c3d697)
Adjust the config/log/data paths if appdata is set. (98b418b2)
Show mining fees on /block page. (3a97e639)
Docs and sample config updates. (b97a023d, f6d2f423, eec01acf, 28c3d697)
Add new page /ticketpricewindows that lists all of the historical ticket price windows. (e8ceddea, 7461f90a)
Replace the shared quit channel with a context.Context from the "context" standard library. (71812ded)
Show Tx Type in the address page's tx table. (052e344c)
Overhaul reorg handling for dcrd's JSON RPC v5.0.0 notification sequence. (2fd7d047)
Improved support for browsers with JavaScript disabled. (a66fba37)
Better address validation. (dde716d8)
Numerous UI, formatting, and wording tweaks. Many other minor and under-the-hood changes.
16 code contributors (alphabetical): @ademuanthony, @buck54321, @chappjc, @codemaestro64, @degeri, @dmigwi, @gozart1, @itswisdomagain, @jholdstock, @Jujhar, @logicminds, @McEdward, @papacarp, @RogueElement, @s-ben, @SeaLightHouse.
158 changed files with 16,122 additions and 6,485 deletions: https://github.com/decred/dcrdata/compare/v3.0.0...v3.1.0
This is a patch release with one fix since v3.0.2:
When appdata is set, dcrdata now adjusts the config/log/data paths.
With appdata set to a non-default value via either a command line switch or the
environment variable, this updates the default config file location to avoid an
error. A missing config file in the default appdata directory should not have been
an error.
This change also updates the default config file location when a custom appdata
is set so there is no error if the config file is missing. It is only an error if
the config file location is explicitly set and does not exist.
A small optimization is also made such that the API status is not updated
with an invalid height when DB is empty. When first starting with an empty
sqlite DB, do not send a bogus height (4294967295 = uint32(-1)) on the API
status update channel.
The block height is added to the error message if no block is returned by
appContext.BlockData.GetBestBlockSummary when performing this lookup in
response to an API status update signal received by appContext.StatusNtfnHandler.
This is a patch release with several important fixes. The postgresq DB table format is bumped to 3.5.4, requiring a short automatic upgrade on initial startup of this version.
The following changes were made since v3.0.0:
NOTE: The PostgreSQL database must be rebuilt from scratch (using the dcrdata executable) as the scheme is incompatible with previous versions and an upgrade was not practical.
This is the release of dcrdata v3.0.0. Since the last published release (v2.1.3), the following changes were made:
--no-dev-prefetch option to disable computing the project fund balance after each new block.--sync-and-quit option to immediately quit after syncing to the network best block.9 code contributors (alphabedical): @chappjc, @codemaestro64, @dmigwi, @gozart1, @JFixby, @papacarp, @RogueElement, @SeaLightHouse, @snadorp. 106 changed files with 9,064 additions and 1,822 deletions:
NOTE: Not compatible with the data tables scheme or data directory layout of v1.x, v3.x, OR master.
NOTE 2: This release supports testnet3, not testnet2. The latest release with testnet2 support is v2.1.0.
This is the release of dcrdata v2.1.3. Since the last published release (v2.0), the following changes were made:
14 code contributors: @gozart1 , @samparsky, @McEdward, @girino, @papacarp, @RogueElement, @jrick, @JFixby, @orthomind, @lte13, @timi-ola, @SeaLightHouse, @snadorp, @chappjc.
113 changed files with 9,100 additions and 2,222 deletions.
NOTE: Not compatible with the data tables scheme or data directory layout of v1.3 OR master.
This is the release of dcrdata v2.0. Since the last release (v1.3.0), the following changes were made:
--pg.6 contributors: @gozart1 , @RogueElement , @McEdward , @dajohi , @papacarp , @chappjc, @raedah . 6,722 additions and 1,701 deletions. https://github.com/decred/dcrdata/compare/v1.3.1...v2.0
This is the Hcash edition of dcrdata. It works (probably)!