主题: 强悍的 Dovecot-1.2（开发版本）
今天看到的一条 git 记录：
Initial code to support Apache Solr (Lucene indexing server).
看来 Dovecot-1.2 会支持 Lucene 了。
details: http://hg.dovecot.org/dovecot-1.2/rev/662172573fe1
changeset: 7990:662172573fe1
user: Timo Sirainen <tss at iki.fi>
date: Fri Jul 11 01:44:13 2008 +0530
description:
Initial code to support Apache Solr (Lucene indexing server).
diffstat:
10 files changed, 930 insertions(+), 2 deletions(-)
configure.in | 40 ++
src/plugins/Makefile.am | 6
src/plugins/fts-solr/Makefile.am | 32 ++
src/plugins/fts-solr/fts-backend-solr.c | 299 ++++++++++++++++++++
src/plugins/fts-solr/fts-solr-plugin.c | 16 +
src/plugins/fts-solr/fts-solr-plugin.h | 11
src/plugins/fts-solr/schema.xml | 50 +++
src/plugins/fts-solr/solr-connection.c | 454 +++++++++++++++++++++++++++++++
src/plugins/fts-solr/solr-connection.h | 22 +
src/plugins/fts/fts-storage.c | 2
diffs (truncated from 1004 to 300 lines):
diff -r 9369c0190ef0 -r 662172573fe1 configure.in
--- a/configure.in Thu Jul 10 22:38:31 2008 +0530
+++ b/configure.in Fri Jul 11 01:44:13 2008 +0530
@@ -262,6 +262,15 @@ AC_ARG_WITH(lucene,
fi,
want_lucene=no)
AM_CONDITIONAL(BUILD_LUCENE, test "$want_lucene" = "yes")
+
+AC_ARG_WITH(solr,
+[ --with-solr Build with Solr full text search support],
+ if test x$withval = xno || test x$withval = xauto; then
+ want_solr=$withval
+ else
+ want_solr=yes
+ fi,
+ want_solr=no)
AC_ARG_WITH(ssl,
[ --with-ssl=gnutls|openssl Build with GNUTLS or OpenSSL (default)],
@@ -2204,6 +2213,36 @@ fi
fi
AM_CONDITIONAL(HAVE_RQUOTA, test "$have_rquota" = "yes")
+if test "$want_solr" != "no"; then
+ AC_CHECK_PROG(CURLCONFIG, curl-config, YES, NO)
+ if test $CURLCONFIG = YES; then
+ CURL_CFLAGS=`curl-config --cflags`
+ CURL_LIBS=`curl-config --libs`
+
+ dnl libcurl found, also need libexpat
+ AC_CHECK_LIB(expat, XML_Parse, [
+ AC_CHECK_HEADER(expat.h, [
+ AC_SUBST(CURL_CFLAGS)
+ AC_SUBST(CURL_LIBS)
+ have_solr=yes
+ ], [
+ if test $want_solr = yes; then
+ AC_ERROR([Can't build with Solr support: expat.h not found])
+ fi
+ ])
+ ], [
+ if test $want_solr = yes; then
+ AC_ERROR([Can't build with Solr support: libexpat not found])
+ fi
+ ])
+ else
+ if test $want_solr = yes; then
+ AC_ERROR([Can't build with Solr support: curl-config not found])
+ fi
+ fi
+fi
+AM_CONDITIONAL(BUILD_SOLR, test "$have_solr" = "yes")
+
dnl **
dnl ** capabilities
dnl **
@@ -2264,6 +2303,7 @@ src/plugins/expire/Makefile
src/plugins/expire/Makefile
src/plugins/fts/Makefile
src/plugins/fts-lucene/Makefile
+src/plugins/fts-solr/Makefile
src/plugins/fts-squat/Makefile
src/plugins/lazy-expunge/Makefile
src/plugins/mail-log/Makefile
diff -r 9369c0190ef0 -r 662172573fe1 src/plugins/Makefile.am
--- a/src/plugins/Makefile.am Thu Jul 10 22:38:31 2008 +0530
+++ b/src/plugins/Makefile.am Fri Jul 11 01:44:13 2008 +0530
@@ -6,7 +6,11 @@ FTS_LUCENE = fts-lucene
FTS_LUCENE = fts-lucene
endif
+if BUILD_SOLR
+FTS_LUCENE = fts-solr
+endif
+
SUBDIRS = \
acl convert expire fts fts-squat lazy-expunge mail-log mbox-snarf \
quota imap-quota trash virtual \
- $(ZLIB) $(FTS_LUCENE)
+ $(ZLIB) $(FTS_LUCENE) $(FTS_SOLR)
diff -r 9369c0190ef0 -r 662172573fe1 src/plugins/fts-solr/Makefile.am
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/plugins/fts-solr/Makefile.am Fri Jul 11 01:44:13 2008 +0530
@@ -0,0 +1,32 @@
+AM_CPPFLAGS = \
+ -I$(top_srcdir)/src/lib \
+ -I$(top_srcdir)/src/lib-mail \
+ -I$(top_srcdir)/src/lib-index \
+ -I$(top_srcdir)/src/lib-storage \
+ -I$(top_srcdir)/src/plugins/fts
+
+lib21_fts_solr_plugin_la_LDFLAGS = -module -avoid-version
+
+module_LTLIBRARIES = \
+ lib21_fts_solr_plugin.la
+
+lib21_fts_solr_plugin_la_LIBADD = \
+ $(CURL_CFLAGS) -lexpat
+
+lib21_fts_solr_plugin_la_SOURCES = \
+ fts-backend-solr.c \
+ fts-solr-plugin.c \
+ solr-connection.c
+
+noinst_HEADERS = \
+ fts-solr-plugin.h \
+ solr-connection.h
+
+EXTRA_DIST = schema.xml
+
+install-exec-local:
+ for d in imap lda; do \
+ $(mkdir_p) $(DESTDIR)$(moduledir)/$d; \
+ rm -f $(DESTDIR)$(moduledir)/$d/lib21_fts_solr_plugin$(MODULE_SUFFIX); \
+ $(LN_S) ../lib21_fts_solr_plugin$(MODULE_SUFFIX) $(DESTDIR)$(moduledir)/$d; \
+ done
diff -r 9369c0190ef0 -r 662172573fe1 src/plugins/fts-solr/fts-backend-solr.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/plugins/fts-solr/fts-backend-solr.c Fri Jul 11 01:44:13 2008 +0530
@@ -0,0 +1,299 @@
+/* Copyright (c) 2006-2008 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "array.h"
+#include "str.h"
+#include "mail-storage-private.h"
+#include "solr-connection.h"
+#include "fts-solr-plugin.h"
+
+#include <stdlib.h>
+#include <curl/curl.h>
+
+struct solr_fts_backend_build_context {
+ struct fts_backend_build_context ctx;
+
+ struct solr_connection_post *post;
+ uint32_t prev_uid, uid_validity;
+ string_t *cmd;
+ bool headers;
+};
+
+static struct solr_connection *solr_conn = NULL;
+
+static void solr_quote_str(string_t *dest, const char *str)
+{
+ solr_connection_quote_str(solr_conn, dest, str);
+}
+
+static void xml_encode(string_t *dest, const char *str)
+{
+ for (; *str != '\0'; str++) {
+ switch (*str) {
+ case '&':
+ str_append(dest, "&");
+ break;
+ case '<':
+ str_append(dest, "<");
+ break;
+ case '>':
+ str_append(dest, ">");
+ break;
+ default:
+ str_append_c(dest, *str);
+ break;
+ }
+ }
+}
+
+static struct fts_backend *
+fts_backend_solr_init(struct mailbox *box ATTR_UNUSED)
+{
+ struct fts_backend *backend;
+
+ if (solr_conn == NULL)
+ solr_conn = solr_connection_init(getenv("FTS_SOLR"));
+
+ backend = i_new(struct fts_backend, 1);
+ *backend = fts_backend_solr;
+ return backend;
+}
+
+static void fts_backend_solr_deinit(struct fts_backend *backend)
+{
+ i_free(backend);
+}
+
+static int fts_backend_solr_get_last_uid(struct fts_backend *backend,
+ uint32_t *last_uid_r)
+{
+ struct mailbox_status status;
+ ARRAY_TYPE(seq_range) uids;
+ const struct seq_range *uidvals;
+ unsigned int count;
+ string_t *str;
+
+ str = t_str_new(256);
+ str_append(str, "fl=uid&rows=1&sort=uid%20desc&q=");
+
+ mailbox_get_status(backend->box, STATUS_UIDVALIDITY, &status);
+ str_printfa(str, "uidv:%u%%20box:", status.uidvalidity);
+ solr_quote_str(str, backend->box->name);
+ str_append(str, "%20user:");
+ solr_quote_str(str, backend->box->storage->user);
+
+ t_array_init(&uids, 1);
+ if (solr_connection_select(solr_conn, str_c(str), &uids) < 0)
+ return -1;
+
+ uidvals = array_get(&uids, &count);
+ if (count == 0) {
+ /* nothing indexed yet for this mailbox */
+ *last_uid_r = 0;
+ } else if (count == 1 && uidvals[0].seq1 == uidvals[0].seq2) {
+ *last_uid_r = uidvals[0].seq1;
+ } else {
+ i_error("fts_solr: Last UID lookup returned multiple rows");
+ return -1;
+ }
+ return 0;
+}
+
+static int
+fts_backend_solr_build_init(struct fts_backend *backend, uint32_t *last_uid_r,
+ struct fts_backend_build_context **ctx_r)
+{
+ struct solr_fts_backend_build_context *ctx;
+ struct mailbox_status status;
+
+ *last_uid_r = (uint32_t)-1;
+
+ ctx = i_new(struct solr_fts_backend_build_context, 1);
+ ctx->ctx.backend = backend;
+ ctx->post = solr_connection_post_begin(solr_conn);
+ ctx->cmd = str_new(default_pool, 256);
+
+ mailbox_get_status(backend->box, STATUS_UIDVALIDITY, &status);
+ ctx->uid_validity = status.uidvalidity;
+
+ *ctx_r = &ctx->ctx;
+ return 0;
+}
+
+static int
+fts_backend_solr_build_more(struct fts_backend_build_context *_ctx,
+ uint32_t uid, const unsigned char *data,
+ size_t size, bool headers)
+{
+ struct solr_fts_backend_build_context *ctx =
+ (struct solr_fts_backend_build_context *)_ctx;
+ struct mailbox *box = _ctx->backend->box;
+ string_t *cmd = ctx->cmd;
+
+ /* body comes first, then headers */
+ if (ctx->prev_uid != uid) {
+ /* uid changed */
+ str_truncate(cmd, 0);
+ if (ctx->prev_uid == 0)
+ str_append(cmd, "<add>");
+ else
+ str_append(cmd, "</field></doc>");
+ ctx->prev_uid = uid;
+
+ str_printfa(cmd, "<doc>"
+ "<field name=\"uid\">%u</field>"
+ "<field name=\"uidv\">%u</field>",
+ uid, ctx->uid_validity);
+
+ str_append(cmd, "<field name=\"box\">");
+ xml_encode(cmd, box->name);
+ str_append(cmd, "</field><field name=\"user\">");
+ xml_encode(cmd, box->storage->user);
+
+ str_printfa(cmd, "</field><field name=\"id\">%u/%u/",
+ uid, ctx->uid_validity);
+ xml_encode(cmd, box->storage->user);
+ str_append_c(cmd, '/');
+ xml_encode(cmd, box->name);
+ str_append(cmd, "</field>");
+
+ ctx->headers = headers;
+ if (headers) {
+ str_append(cmd, "<field name=\"hdr\">");
+ } else {
+ str_append(cmd, "<field name=\"body\">");
+ }
+ solr_connection_post_more(ctx->post, str_data(cmd),
+ str_len(cmd));
+ } else if (headers && !ctx->headers) {
+ str_truncate(cmd, 0);
+ str_append(cmd, "</field><field name=\"hdr\">");
+ solr_connection_post_more(ctx->post, str_data(cmd),
+ str_len(cmd));
+ } else {
+ i_assert(!(!headers && ctx->headers));
+ }
+
+ solr_connection_post_more(ctx->post, data, size);
+ return 0;
+}
+