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docs: rename frontends/webapi.txt to frontends/wapi.txt
rename CLI.txt to frontends/CLI.txt change a few mentions of "webapi" to "wapi" fixes #582
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NEWS
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NEWS
@ -30,7 +30,7 @@ By periodically checking/repairing all files and directories, objects in the
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Tahoe filesystem remain resistant to recoverability failures due to missing
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and/or broken servers.
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This release includes a webapi mechanism to initiate checks on individual
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This release includes a wapi mechanism to initiate checks on individual
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files and directories (with or without verification, and with or without
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automatic repair). A related mechanism is used to initiate a "deep-check" on
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a directory: recursively traversing the directory and its children, checking
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@ -46,7 +46,7 @@ and deep-check operations. When these operations finish, they display a
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results page that summarizes any problems that were encountered. All
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long-running deep-traversal operations, including deep-check, use a
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start-and-poll mechanism, to avoid depending upon a single long-lived HTTP
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connection. docs/frontends/webapi.txt has details.
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connection. docs/frontends/wapi.txt has details.
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** Configuration Changes: single INI-format tahoe.cfg file
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@ -152,11 +152,11 @@ The top-level status page (/status) now has a machine-readable form, via
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"/status/?t=json". This includes information about the currently-active
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uploads and downloads, which may be useful for frontends that wish to display
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progress information. There is no easy way to correlate the activities
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displayed here with recent webapi requests, however.
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displayed here with recent wapi requests, however.
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Any files in BASEDIR/public_html/ (configurable) will be served in response
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to requests in the /static/ portion of the URL space. This will simplify the
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deployment of javascript-based frontends that can still access webapi calls
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deployment of javascript-based frontends that can still access wapi calls
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by conforming to the (regrettable) "same-origin policy".
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The welcome page now has a "Report Incident" button, which is tied into the
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@ -192,7 +192,7 @@ moved here too. As a result, the directory page is now much simpler and
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cleaner, and several potentially-misleading links (like t=uri) are now gone.
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Slashes are discouraged in Tahoe file/directory names, since they cause
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problems when accessing the filesystem through the webapi. However, there are
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problems when accessing the filesystem through the wapi. However, there are
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a couple of accidental ways to generate such names. This release tries to
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make it easier to correct such mistakes by escaping slashes in several
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places, allowing slashes in the t=info and t=delete commands, and in the
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@ -262,7 +262,7 @@ plugins that can be used to monitor a storage grid.
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The misc/spacetime/ directory contains a "disk watcher" daemon (startable
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with 'tahoe start'), which can be configured with a set of HTTP URLs
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(pointing at the webapi '/statistics' page of a bunch of storage servers),
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(pointing at the wapi '/statistics' page of a bunch of storage servers),
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and will periodically fetch disk-used/disk-available information from all the
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servers. It keeps this information in an Axiom database (a sqlite-based
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library available from divmod.org). The daemon computes time-averaged rates
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@ -274,7 +274,7 @@ The misc/munin/ directory contains a new set of munin plugins
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disk-watcher and provide graphs of its calculations.
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To support the disk-watcher, the Tahoe statistics component (visible through
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the webapi at the /statistics/ URL) now includes disk-used and disk-available
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the wapi at the /statistics/ URL) now includes disk-used and disk-available
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information. Both are derived through an equivalent of the unix 'df' command
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(i.e. they ask the kernel for the number of free blocks on the partition that
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encloses the BASEDIR/storage directory). In the future, the disk-available
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@ -301,7 +301,7 @@ logs) now includes a platform identifer (frequently including a linux
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distribution name, processor architecture, etc).
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Several bugs have been fixed, including one that would cause an exception (in
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the logs) if a webapi download operation was cancelled (by closing the TCP
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the logs) if a wapi download operation was cancelled (by closing the TCP
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connection, or pushing the "stop" button in a web browser).
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The 12GiB (approximate) immutable-file-size limitation is slowly being
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@ -402,7 +402,7 @@ Tahoe is slowly acquiring convenient tools to check up on file health,
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examine existing shares for errors, and repair files that are not fully
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healthy. This release adds a mutable checker/verifier/repairer, although
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testing is very limited, and there are no web interfaces to trigger repair
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yet. The "Check" button next to each file or directory on the webapi page
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yet. The "Check" button next to each file or directory on the wapi page
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will perform a file check, and the "deep check" button on each directory will
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recursively check all files and directories reachable from there (which may
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take a very long time).
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@ -442,7 +442,7 @@ the incidents/ directory for a second time.
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If no servers are available when retrieving a mutable file (like a
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directory), the node now reports an error instead of hanging forever. Earlier
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releases would not only hang (causing the webapi directory listing to get
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releases would not only hang (causing the wapi directory listing to get
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stuck half-way through), but the internal dirnode serialization would cause
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all subsequent attempts to retrieve or modify the same directory to hang as
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well. #463
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@ -467,7 +467,7 @@ directories, recursive copy in or out of the storage grid, hardlinks, and
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retrieving the raw read- or write- caps through the 'ls' command. Please read
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docs/CLI.txt for complete details.
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** webapi: new pages, new commands
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** wapi: new pages, new commands
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Several new pages were added to the web API:
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@ -488,7 +488,7 @@ Several new options to the GET command were added:
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POST is now preferred over PUT for most operations which cause side-effects.
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Most webapi calls now accept overwrite=, and default to overwrite=true .
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Most wapi calls now accept overwrite=, and default to overwrite=true .
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"POST /uri/DIRCAP/parent/child?t=mkdir" is now the preferred API to create
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multiple directories at once, rather than ...?t=mkdir-p .
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@ -520,7 +520,7 @@ method) and is less likely to lose data when several uncoordinated writers
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change a file at the same time.
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In addition, a single Tahoe process will coordinate its own writes. If you
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make two concurrent directory-modifying webapi calls to a single tahoe node,
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make two concurrent directory-modifying wapi calls to a single tahoe node,
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it will internally make one of them wait for the other to complete. This
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prevents auto-collision (#391).
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@ -541,8 +541,8 @@ first attempt, but once any attempt succeeds, the other server connections
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will be retried immediately.
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A new "offloaded KeyGenerator" facility can be configured, to move RSA key
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generation out from, say, a webapi node, into a separate process. RSA keys
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can take several seconds to create, and so a webapi node which is being used
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generation out from, say, a wapi node, into a separate process. RSA keys
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can take several seconds to create, and so a wapi node which is being used
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for directory creation will be unavailable for anything else during this
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time. The Key Generator process will pre-compute a small pool of keys, to
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speed things up further. This also takes better advantage of multi-core CPUs,
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@ -49,7 +49,7 @@ nickname = (UTF-8 string, optional)
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web.port = (strports string, optional)
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This controls where the node's webserver should listen, providing filesystem
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access and node status as defined in webapi.txt . This file contains a
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access and node status as defined in wapi.txt . This file contains a
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Twisted "strports" specification such as "3456" or
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"tcp:3456:interface=127.0.0.1". The 'tahoe create-client' command sets the
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web.port to "tcp:3456:interface=127.0.0.1" by default, and is overridable by
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@ -54,7 +54,7 @@ clients.
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"key-generation" service, which allows a client to offload their RSA key
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generation to a separate process. Since RSA key generation takes several
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seconds, and must be done each time a directory is created, moving it to a
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separate process allows the first process (perhaps a busy webapi server) to
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separate process allows the first process (perhaps a busy wapi server) to
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continue servicing other requests. The key generator exports a FURL that can
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be copied into a client node to enable this functionality.
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@ -78,13 +78,13 @@ start using their changes.
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These commands let you exmaine a Tahoe filesystem, providing basic
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list/upload/download/delete/rename/mkdir functionality. They can be used as
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primitives by other scripts. Most of these commands are fairly thin wrappers
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around webapi calls.
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around wapi calls.
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By default, all filesystem-manipulation commands look in ~/.tahoe/ to figure
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out which Tahoe node they should use. When the CLI command uses webapi calls,
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out which Tahoe node they should use. When the CLI command uses wapi calls,
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it will use ~/.tahoe/node.url for this purpose: a running Tahoe node that
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provides a webapi port will write its URL into this file. If you want to use
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a node on some other host, just create ~/.tahoe/ and copy that node's webapi
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provides a wapi port will write its URL into this file. If you want to use
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a node on some other host, just create ~/.tahoe/ and copy that node's wapi
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URL into this file, and the CLI commands will contact that node instead of a
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local one.
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@ -151,7 +151,7 @@ that file with:
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Multiple levels of subdirectories can be handled this way:
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http://127.0.0.1:3456/uri/$DIRCAP/tahoe-source/docs/webapi.txt
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http://127.0.0.1:3456/uri/$DIRCAP/tahoe-source/docs/wapi.txt
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In this document, when we need to refer to a URL that references a file using
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this child-of-some-directory format, we'll use the following string:
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@ -182,9 +182,9 @@ contain unicode filenames, and cannot contain binary strings that are not
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representable as such.
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All Tahoe operations that refer to existing files or directories must include
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a suitable read- or write- cap in the URL: the webapi server won't add one
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a suitable read- or write- cap in the URL: the wapi server won't add one
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for you. If you don't know the cap, you can't access the file. This allows
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the security properties of Tahoe caps to be extended across the webapi
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the security properties of Tahoe caps to be extended across the wapi
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interface.
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== Slow Operations, Progress, and Cancelling ==
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@ -1197,7 +1197,7 @@ GET / (introducer status)
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== Static Files in /public_html ==
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The webapi server will take any request for a URL that starts with /static
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The wapi server will take any request for a URL that starts with /static
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and serve it from a configurable directory which defaults to
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$BASEDIR/public_html . This is configured by setting the "[node]web.static"
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value in $BASEDIR/tahoe.cfg . If this is left at the default value of
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@ -1205,7 +1205,7 @@ value in $BASEDIR/tahoe.cfg . If this is left at the default value of
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served with the contents of the file $BASEDIR/public_html/subdir/foo.html .
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This can be useful to serve a javascript application which provides a
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prettier front-end to the rest of the Tahoe webapi.
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prettier front-end to the rest of the Tahoe wapi.
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== safety and security issues -- names vs. URIs ==
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@ -1284,7 +1284,7 @@ Coordination Directive.
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Tahoe nodes implement internal serialization to make sure that a single Tahoe
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node cannot conflict with itself. For example, it is safe to issue two
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directory modification requests to a single tahoe node's webapi server at the
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directory modification requests to a single tahoe node's wapi server at the
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same time, because the Tahoe node will internally delay one of them until
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after the other has finished being applied. (This feature was introduced in
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Tahoe-1.1; back with Tahoe-1.0 the web client was responsible for serializing
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@ -152,7 +152,7 @@ which should be sending it log events.
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The "flogtool filter" command, described above, is useful to cut down the
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potentially-large flogfiles into more a narrowly-focussed form.
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Busy nodes, particularly webapi nodes which are performing recursive
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Busy nodes, particularly wapi nodes which are performing recursive
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deep-size/deep-stats/deep-check operations, can produce a lot of log events.
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To avoid overwhelming the node (and using an unbounded amount of memory for
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the outbound TCP queue), publishing nodes will start dropping log events when
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@ -192,7 +192,7 @@ but a few notes are worth stating here:
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clustered with its parent. For example, a download process that involves
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three sequential hash fetches could announce the send and receipt of those
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hash-fetch messages with a parent= argument that ties them to the overall
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download process. However, each new webapi download request should be
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download process. However, each new wapi download request should be
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unparented.
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* use the format= argument in preference to the message= argument. E.g.
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@ -31,7 +31,7 @@
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"<cite>tahoe ls tahoe:</cite>" and "<cite>tahoe cp LOCALFILE
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tahoe:foo.txt</cite>" to work with your filesystem. The Tahoe CLI uses
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the same syntax as the well-known scp and rsync tools. See <a
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href="CLI.txt">CLI.txt</a> for more details.</p>
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href="frontends/CLI.txt">CLI.txt</a> for more details.</p>
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<p>As with the WUI (and with all current interfaces to Tahoe), you are
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responsible for remembering directory capabilities yourself. If you
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@ -48,7 +48,7 @@
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<h1>The WAPI</h1>
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<p>Want to program your Tahoe node to do your bidding? Easy! See <a href="webapi.txt">webapi.txt</a>.</p>
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<p>Want to program your Tahoe node to do your bidding? Easy! See <a href="frontends/wapi.txt">wapi.txt</a>.</p>
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<p>P.S. "WAPI" is pronounced "wappy".</p>
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