279 lines
20 KiB
HTML
279 lines
20 KiB
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Module machi_flu1_client</title>
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<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
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</head>
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<body bgcolor="white">
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<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
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<hr>
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<h1>Module machi_flu1_client</h1>
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<ul class="index"><li><a href="#description">Description</a></li><li><a href="#types">Data Types</a></li><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>Erlang API for the Machi FLU TCP protocol version 1.
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<h2><a name="description">Description</a></h2>Erlang API for the Machi FLU TCP protocol version 1.
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<h2><a name="types">Data Types</a></h2>
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<h3 class="typedecl"><a name="type-chunk">chunk()</a></h3>
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<p><tt>chunk() = binary() | iolist()</tt></p>
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<p> client can use either</p>
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<h3 class="typedecl"><a name="type-chunk_csum">chunk_csum()</a></h3>
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<p><tt>chunk_csum() = {<a href="#type-file_offset">file_offset()</a>, <a href="#type-chunk_size">chunk_size()</a>, binary()}</tt></p>
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<h3 class="typedecl"><a name="type-chunk_pos">chunk_pos()</a></h3>
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<p><tt>chunk_pos() = {<a href="#type-file_offset">file_offset()</a>, <a href="#type-chunk_size">chunk_size()</a>, <a href="#type-file_name_s">file_name_s()</a>}</tt></p>
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<h3 class="typedecl"><a name="type-chunk_s">chunk_s()</a></h3>
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<p><tt>chunk_s() = binary()</tt></p>
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<p> server always uses binary()</p>
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<h3 class="typedecl"><a name="type-chunk_size">chunk_size()</a></h3>
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<p><tt>chunk_size() = non_neg_integer()</tt></p>
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<h3 class="typedecl"><a name="type-epoch_csum">epoch_csum()</a></h3>
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<p><tt>epoch_csum() = binary()</tt></p>
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<h3 class="typedecl"><a name="type-epoch_id">epoch_id()</a></h3>
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<p><tt>epoch_id() = {<a href="#type-epoch_num">epoch_num()</a>, <a href="#type-epoch_csum">epoch_csum()</a>}</tt></p>
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<h3 class="typedecl"><a name="type-epoch_num">epoch_num()</a></h3>
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<p><tt>epoch_num() = -1 | non_neg_integer()</tt></p>
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<h3 class="typedecl"><a name="type-file_info">file_info()</a></h3>
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<p><tt>file_info() = {<a href="#type-file_size">file_size()</a>, <a href="#type-file_name_s">file_name_s()</a>}</tt></p>
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<h3 class="typedecl"><a name="type-file_name">file_name()</a></h3>
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<p><tt>file_name() = binary() | list()</tt></p>
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<h3 class="typedecl"><a name="type-file_name_s">file_name_s()</a></h3>
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<p><tt>file_name_s() = binary()</tt></p>
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<p> server reply</p>
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<h3 class="typedecl"><a name="type-file_offset">file_offset()</a></h3>
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<p><tt>file_offset() = non_neg_integer()</tt></p>
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<h3 class="typedecl"><a name="type-file_prefix">file_prefix()</a></h3>
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<p><tt>file_prefix() = binary() | list()</tt></p>
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<h3 class="typedecl"><a name="type-file_size">file_size()</a></h3>
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<p><tt>file_size() = non_neg_integer()</tt></p>
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<h3 class="typedecl"><a name="type-inet_host">inet_host()</a></h3>
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<p><tt>inet_host() = <a href="inet.html#type-ip_address">inet:ip_address()</a> | <a href="inet.html#type-hostname">inet:hostname()</a></tt></p>
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<h3 class="typedecl"><a name="type-inet_port">inet_port()</a></h3>
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<p><tt>inet_port() = <a href="inet.html#type-port_number">inet:port_number()</a></tt></p>
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<h3 class="typedecl"><a name="type-projection">projection()</a></h3>
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<p><tt>projection() = #projection_v1{}</tt></p>
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<h3 class="typedecl"><a name="type-projection_type">projection_type()</a></h3>
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<p><tt>projection_type() = public | private</tt></p>
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<h2><a name="index">Function Index</a></h2>
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<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#append_chunk-4">append_chunk/4</a></td><td>Append a chunk (binary- or iolist-style) of data to a file
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with <code>Prefix</code>.</td></tr>
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<tr><td valign="top"><a href="#append_chunk-5">append_chunk/5</a></td><td>Append a chunk (binary- or iolist-style) of data to a file
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with <code>Prefix</code>.</td></tr>
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<tr><td valign="top"><a href="#checksum_list-3">checksum_list/3</a></td><td>Fetch the list of chunk checksums for <code>File</code>.</td></tr>
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<tr><td valign="top"><a href="#checksum_list-4">checksum_list/4</a></td><td>Fetch the list of chunk checksums for <code>File</code>.</td></tr>
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<tr><td valign="top"><a href="#delete_migration-3">delete_migration/3</a></td><td>Restricted API: Delete a file after it has been successfully
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migrated.</td></tr>
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<tr><td valign="top"><a href="#delete_migration-4">delete_migration/4</a></td><td>Restricted API: Delete a file after it has been successfully
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migrated.</td></tr>
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<tr><td valign="top"><a href="#get_all_projections-2">get_all_projections/2</a></td><td>Get all projections from the FLU's projection store.</td></tr>
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<tr><td valign="top"><a href="#get_all_projections-3">get_all_projections/3</a></td><td>Get all projections from the FLU's projection store.</td></tr>
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<tr><td valign="top"><a href="#get_latest_epoch-2">get_latest_epoch/2</a></td><td>Get the latest epoch number + checksum from the FLU's projection store.</td></tr>
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<tr><td valign="top"><a href="#get_latest_epoch-3">get_latest_epoch/3</a></td><td>Get the latest epoch number + checksum from the FLU's projection store.</td></tr>
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<tr><td valign="top"><a href="#list_all_projections-2">list_all_projections/2</a></td><td>Get all epoch numbers from the FLU's projection store.</td></tr>
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<tr><td valign="top"><a href="#list_all_projections-3">list_all_projections/3</a></td><td>Get all epoch numbers from the FLU's projection store.</td></tr>
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<tr><td valign="top"><a href="#list_files-2">list_files/2</a></td><td>Fetch the list of all files on the remote FLU.</td></tr>
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<tr><td valign="top"><a href="#list_files-3">list_files/3</a></td><td>Fetch the list of all files on the remote FLU.</td></tr>
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<tr><td valign="top"><a href="#quit-1">quit/1</a></td><td>Quit & close the connection to remote FLU.</td></tr>
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<tr><td valign="top"><a href="#read_chunk-5">read_chunk/5</a></td><td>Read a chunk of data of size <code>Size</code> from <code>File</code> at <code>Offset</code>.</td></tr>
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<tr><td valign="top"><a href="#read_chunk-6">read_chunk/6</a></td><td>Read a chunk of data of size <code>Size</code> from <code>File</code> at <code>Offset</code>.</td></tr>
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<tr><td valign="top"><a href="#read_latest_projection-2">read_latest_projection/2</a></td><td>Get the latest projection from the FLU's projection store for <code>ProjType</code></td></tr>
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<tr><td valign="top"><a href="#read_latest_projection-3">read_latest_projection/3</a></td><td>Get the latest projection from the FLU's projection store for <code>ProjType</code></td></tr>
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<tr><td valign="top"><a href="#read_projection-3">read_projection/3</a></td><td>Read a projection <code>Proj</code> of type <code>ProjType</code>.</td></tr>
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<tr><td valign="top"><a href="#read_projection-4">read_projection/4</a></td><td>Read a projection <code>Proj</code> of type <code>ProjType</code>.</td></tr>
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<tr><td valign="top"><a href="#trunc_hack-3">trunc_hack/3</a></td><td>Restricted API: Truncate a file after it has been successfully
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erasure coded.</td></tr>
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<tr><td valign="top"><a href="#trunc_hack-4">trunc_hack/4</a></td><td>Restricted API: Truncate a file after it has been successfully
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erasure coded.</td></tr>
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<tr><td valign="top"><a href="#write_chunk-5">write_chunk/5</a></td><td>Restricted API: Write a chunk of already-sequenced data to
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<code>File</code> at <code>Offset</code>.</td></tr>
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<tr><td valign="top"><a href="#write_chunk-6">write_chunk/6</a></td><td>Restricted API: Write a chunk of already-sequenced data to
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<code>File</code> at <code>Offset</code>.</td></tr>
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<tr><td valign="top"><a href="#write_projection-3">write_projection/3</a></td><td>Write a projection <code>Proj</code> of type <code>ProjType</code>.</td></tr>
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<tr><td valign="top"><a href="#write_projection-4">write_projection/4</a></td><td>Write a projection <code>Proj</code> of type <code>ProjType</code>.</td></tr>
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</table>
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<h2><a name="functions">Function Details</a></h2>
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<h3 class="function"><a name="append_chunk-4">append_chunk/4</a></h3>
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<div class="spec">
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<p><tt>append_chunk(Sock::port(), EpochID::<a href="#type-epoch_id">epoch_id()</a>, Prefix::<a href="#type-file_prefix">file_prefix()</a>, Chunk::<a href="#type-chunk">chunk()</a>) -> {ok, <a href="#type-chunk_pos">chunk_pos()</a>} | {error, term()}</tt><br></p>
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</div><p>Append a chunk (binary- or iolist-style) of data to a file
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with <code>Prefix</code>.</p>
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<h3 class="function"><a name="append_chunk-5">append_chunk/5</a></h3>
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<div class="spec">
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<p><tt>append_chunk(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, EpochID::<a href="#type-epoch_id">epoch_id()</a>, Prefix::<a href="#type-file_prefix">file_prefix()</a>, Chunk::<a href="#type-chunk">chunk()</a>) -> {ok, <a href="#type-chunk_pos">chunk_pos()</a>} | {error, term()}</tt><br></p>
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</div><p>Append a chunk (binary- or iolist-style) of data to a file
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with <code>Prefix</code>.</p>
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<h3 class="function"><a name="checksum_list-3">checksum_list/3</a></h3>
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<div class="spec">
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<p><tt>checksum_list(Sock::port(), EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>) -> {ok, [<a href="#type-chunk_csum">chunk_csum()</a>]} | {error, term()}</tt><br></p>
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</div><p>Fetch the list of chunk checksums for <code>File</code>.</p>
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<h3 class="function"><a name="checksum_list-4">checksum_list/4</a></h3>
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<div class="spec">
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<p><tt>checksum_list(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>) -> {ok, [<a href="#type-chunk_csum">chunk_csum()</a>]} | {error, term()}</tt><br></p>
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</div><p>Fetch the list of chunk checksums for <code>File</code>.</p>
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<h3 class="function"><a name="delete_migration-3">delete_migration/3</a></h3>
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<div class="spec">
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<p><tt>delete_migration(Sock::port(), EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>) -> ok | {error, term()}</tt><br></p>
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</div><p>Restricted API: Delete a file after it has been successfully
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migrated.</p>
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<h3 class="function"><a name="delete_migration-4">delete_migration/4</a></h3>
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<div class="spec">
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<p><tt>delete_migration(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>) -> ok | {error, term()}</tt><br></p>
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</div><p>Restricted API: Delete a file after it has been successfully
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migrated.</p>
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<h3 class="function"><a name="get_all_projections-2">get_all_projections/2</a></h3>
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<div class="spec">
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<p><tt>get_all_projections(Sock::port(), ProjType::<a href="#type-projection_type">projection_type()</a>) -> {ok, [<a href="#type-projection">projection()</a>]} | {error, term()}</tt><br></p>
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</div><p>Get all projections from the FLU's projection store.</p>
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<h3 class="function"><a name="get_all_projections-3">get_all_projections/3</a></h3>
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<div class="spec">
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<p><tt>get_all_projections(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, ProjType::<a href="#type-projection_type">projection_type()</a>) -> {ok, [<a href="#type-projection">projection()</a>]} | {error, term()}</tt><br></p>
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</div><p>Get all projections from the FLU's projection store.</p>
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<h3 class="function"><a name="get_latest_epoch-2">get_latest_epoch/2</a></h3>
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<div class="spec">
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<p><tt>get_latest_epoch(Sock::port(), ProjType::<a href="#type-projection_type">projection_type()</a>) -> {ok, <a href="#type-epoch_id">epoch_id()</a>} | {error, term()}</tt><br></p>
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</div><p>Get the latest epoch number + checksum from the FLU's projection store.</p>
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<h3 class="function"><a name="get_latest_epoch-3">get_latest_epoch/3</a></h3>
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<div class="spec">
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<p><tt>get_latest_epoch(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, ProjType::<a href="#type-projection_type">projection_type()</a>) -> {ok, <a href="#type-epoch_id">epoch_id()</a>} | {error, term()}</tt><br></p>
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</div><p>Get the latest epoch number + checksum from the FLU's projection store.</p>
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<h3 class="function"><a name="list_all_projections-2">list_all_projections/2</a></h3>
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<div class="spec">
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<p><tt>list_all_projections(Sock::port(), ProjType::<a href="#type-projection_type">projection_type()</a>) -> {ok, [non_neg_integer()]} | {error, term()}</tt><br></p>
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</div><p>Get all epoch numbers from the FLU's projection store.</p>
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<h3 class="function"><a name="list_all_projections-3">list_all_projections/3</a></h3>
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<div class="spec">
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<p><tt>list_all_projections(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, ProjType::<a href="#type-projection_type">projection_type()</a>) -> {ok, [non_neg_integer()]} | {error, term()}</tt><br></p>
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</div><p>Get all epoch numbers from the FLU's projection store.</p>
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<h3 class="function"><a name="list_files-2">list_files/2</a></h3>
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<div class="spec">
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<p><tt>list_files(Sock::port(), EpochID::<a href="#type-epoch_id">epoch_id()</a>) -> {ok, [<a href="#type-file_info">file_info()</a>]} | {error, term()}</tt><br></p>
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</div><p>Fetch the list of all files on the remote FLU.</p>
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<h3 class="function"><a name="list_files-3">list_files/3</a></h3>
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<div class="spec">
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<p><tt>list_files(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, EpochID::<a href="#type-epoch_id">epoch_id()</a>) -> {ok, [<a href="#type-file_info">file_info()</a>]} | {error, term()}</tt><br></p>
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</div><p>Fetch the list of all files on the remote FLU.</p>
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<h3 class="function"><a name="quit-1">quit/1</a></h3>
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<div class="spec">
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<p><tt>quit(Sock::port()) -> ok</tt><br></p>
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</div><p>Quit & close the connection to remote FLU.</p>
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<h3 class="function"><a name="read_chunk-5">read_chunk/5</a></h3>
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<div class="spec">
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<p><tt>read_chunk(Sock::port(), EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>, Offset::<a href="#type-file_offset">file_offset()</a>, Size::<a href="#type-chunk_size">chunk_size()</a>) -> {ok, <a href="#type-chunk_s">chunk_s()</a>} | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Read a chunk of data of size <code>Size</code> from <code>File</code> at <code>Offset</code>.</p>
|
||
|
|
|
||
|
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<h3 class="function"><a name="read_chunk-6">read_chunk/6</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>read_chunk(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>, Offset::<a href="#type-file_offset">file_offset()</a>, Size::<a href="#type-chunk_size">chunk_size()</a>) -> {ok, <a href="#type-chunk_s">chunk_s()</a>} | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Read a chunk of data of size <code>Size</code> from <code>File</code> at <code>Offset</code>.</p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="read_latest_projection-2">read_latest_projection/2</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>read_latest_projection(Sock::port(), ProjType::<a href="#type-projection_type">projection_type()</a>) -> {ok, <a href="#type-projection">projection()</a>} | {error, not_written} | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Get the latest projection from the FLU's projection store for <code>ProjType</code></p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="read_latest_projection-3">read_latest_projection/3</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>read_latest_projection(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, ProjType::<a href="#type-projection_type">projection_type()</a>) -> {ok, <a href="#type-projection">projection()</a>} | {error, not_written} | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Get the latest projection from the FLU's projection store for <code>ProjType</code></p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="read_projection-3">read_projection/3</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>read_projection(Sock::port(), ProjType::<a href="#type-projection_type">projection_type()</a>, Epoch::<a href="#type-epoch_num">epoch_num()</a>) -> {ok, <a href="#type-projection">projection()</a>} | {error, written} | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Read a projection <code>Proj</code> of type <code>ProjType</code>.</p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="read_projection-4">read_projection/4</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>read_projection(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, ProjType::<a href="#type-projection_type">projection_type()</a>, Epoch::<a href="#type-epoch_num">epoch_num()</a>) -> {ok, <a href="#type-projection">projection()</a>} | {error, written} | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Read a projection <code>Proj</code> of type <code>ProjType</code>.</p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="trunc_hack-3">trunc_hack/3</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>trunc_hack(Sock::port(), EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>) -> ok | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Restricted API: Truncate a file after it has been successfully
|
||
|
|
erasure coded.</p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="trunc_hack-4">trunc_hack/4</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>trunc_hack(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>) -> ok | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Restricted API: Truncate a file after it has been successfully
|
||
|
|
erasure coded.</p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="write_chunk-5">write_chunk/5</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>write_chunk(Sock::port(), EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>, Offset::<a href="#type-file_offset">file_offset()</a>, Chunk::<a href="#type-chunk">chunk()</a>) -> ok | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Restricted API: Write a chunk of already-sequenced data to
|
||
|
|
<code>File</code> at <code>Offset</code>.</p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="write_chunk-6">write_chunk/6</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>write_chunk(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, EpochID::<a href="#type-epoch_id">epoch_id()</a>, File::<a href="#type-file_name">file_name()</a>, Offset::<a href="#type-file_offset">file_offset()</a>, Chunk::<a href="#type-chunk">chunk()</a>) -> ok | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Restricted API: Write a chunk of already-sequenced data to
|
||
|
|
<code>File</code> at <code>Offset</code>.</p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="write_projection-3">write_projection/3</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>write_projection(Sock::port(), ProjType::<a href="#type-projection_type">projection_type()</a>, Proj::<a href="#type-projection">projection()</a>) -> ok | {error, written} | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Write a projection <code>Proj</code> of type <code>ProjType</code>.</p>
|
||
|
|
|
||
|
|
<h3 class="function"><a name="write_projection-4">write_projection/4</a></h3>
|
||
|
|
<div class="spec">
|
||
|
|
<p><tt>write_projection(Host::<a href="#type-inet_host">inet_host()</a>, TcpPort::<a href="#type-inet_port">inet_port()</a>, ProjType::<a href="#type-projection_type">projection_type()</a>, Proj::<a href="#type-projection">projection()</a>) -> ok | {error, written} | {error, term()}</tt><br></p>
|
||
|
|
</div><p>Write a projection <code>Proj</code> of type <code>ProjType</code>.</p>
|
||
|
|
<hr>
|
||
|
|
|
||
|
|
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||
|
|
<p><i>Generated by EDoc, Apr 8 2015, 17:31:11.</i></p>
|
||
|
|
</body>
|
||
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|
</html>
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