From 6fd50506d2e50d2faf2478a2883a2ef1b4840a78 Mon Sep 17 00:00:00 2001
From: Douglas Rumbaugh <dbr4@psu.edu>
Date: Wed, 17 May 2023 16:00:20 -0400
Subject: Started implementing shard interface (not finished yet)

---
 include/framework/DynamicExtension.h | 41 ++++++++++++++++++++----------------
 1 file changed, 23 insertions(+), 18 deletions(-)

(limited to 'include/framework/DynamicExtension.h')

diff --git a/include/framework/DynamicExtension.h b/include/framework/DynamicExtension.h
index fd42c5f..53b55b1 100644
--- a/include/framework/DynamicExtension.h
+++ b/include/framework/DynamicExtension.h
@@ -16,6 +16,9 @@
 
 #include "framework/MutableBuffer.h"
 #include "framework/InternalLevel.h"
+#include "framework/ShardInterface.h"
+
+#include "shard/WIRS.h"
 #include "ds/Alias.h"
 #include "util/timer.h"
 
@@ -68,9 +71,8 @@ enum class DeletePolicy {
 
 typedef ssize_t level_index;
 
-template <RecordInterface R>
+template <RecordInterface R, ShardInterface S>
 class DynamicExtension {
-    typedef WIRS<R> Shard;
     typedef decltype(R::key) K;
     typedef decltype(R::value) V;
     typedef decltype(R::weight) W;
@@ -143,7 +145,7 @@ public:
 
         // Get the shard weights for each level. Index 0 is the buffer,
         // represented by nullptr.
-        std::vector<std::pair<ShardID, Shard*>> shards;
+        std::vector<std::pair<ShardID, S*>> shards;
         std::vector<void*> states;
         shards.push_back({{-1, -1}, nullptr});
         states.push_back(nullptr);
@@ -151,13 +153,15 @@ public:
         std::vector<W> shard_weights;
         shard_weights.push_back((double) buffer_weight);
 
+        WIRS<R>::wirs_query_parms parms = {lower_key, upper_key};
+
         for (auto &level : m_levels) {
-            level->get_shard_weights(shard_weights, shards, states, lower_key, upper_key);
+            level->get_query_states(shard_weights, shards, states, &parms);
         }
 
         if (shard_weights.size() == 1 && shard_weights[0] == 0) {
             if (buffer_alias) delete buffer_alias;
-            for (auto& x: states) Shard::delete_state(x);
+            for (auto& x: states) S::delete_query_state(x);
             sampling_bailouts++;
             return; // no records in the sampling range
         }
@@ -243,7 +247,7 @@ public:
         } while (sample_idx < sample_sz);
 
         if (buffer_alias) delete buffer_alias;
-        for (auto& x: states) Shard::delete_state(x);
+        for (auto& x: states) S::delete_query_state(x);
 
         enforce_rejection_rate_maximum(rng);
     }
@@ -348,8 +352,8 @@ public:
     }
     
 
-    Shard *create_ssi() {
-        std::vector<Shard *> shards;
+    S *create_ssi() {
+        std::vector<S *> shards;
 
         if (m_levels.size() > 0) {
             for (int i=m_levels.size() - 1; i>= 0; i--) {
@@ -359,9 +363,9 @@ public:
             }
         }
 
-        shards.emplace_back(new Shard(get_buffer(), nullptr));
+        shards.emplace_back(new S(get_buffer(), nullptr));
 
-        Shard *shards_array[shards.size()];
+        S *shards_array[shards.size()];
 
         size_t j = 0;
         for (size_t i=0; i<shards.size(); i++) {
@@ -370,7 +374,7 @@ public:
             }
         }
 
-        Shard *flattened = new Shard(shards_array, j, nullptr);
+        S *flattened = new S(shards_array, j, nullptr);
 
         for (auto shard : shards) {
             delete shard;
@@ -390,7 +394,7 @@ private:
     double m_max_delete_prop;
     double m_max_rejection_rate;
 
-    std::vector<InternalLevel<R> *> m_levels;
+    std::vector<InternalLevel<R, S> *> m_levels;
 
     level_index m_last_level_idx;
 
@@ -446,7 +450,7 @@ private:
         if (new_idx > 0) {
             assert(m_levels[new_idx - 1]->get_shard(0)->get_tombstone_count() == 0);
         }
-        m_levels.emplace_back(new InternalLevel<R>(new_idx, new_shard_cnt));
+        m_levels.emplace_back(new InternalLevel<R, S>(new_idx, new_shard_cnt));
 
         m_last_level_idx++;
         return new_idx;
@@ -526,14 +530,14 @@ private:
         // merging two memory levels
         if (LSM_LEVELING) {
             auto tmp = m_levels[base_level];
-            m_levels[base_level] = InternalLevel<R>::merge_levels(m_levels[base_level], m_levels[incoming_level], rng);
+            m_levels[base_level] = InternalLevel<R, S>::merge_levels(m_levels[base_level], m_levels[incoming_level], rng);
             mark_as_unused(tmp);
         } else {
             m_levels[base_level]->append_merged_shards(m_levels[incoming_level], rng);
         }
 
         mark_as_unused(m_levels[incoming_level]);
-        m_levels[incoming_level] = new InternalLevel<R>(incoming_level, (LSM_LEVELING) ? 1 : m_scale_factor);
+        m_levels[incoming_level] = new InternalLevel<R, S>(incoming_level, (LSM_LEVELING) ? 1 : m_scale_factor);
     }
 
 
@@ -542,9 +546,9 @@ private:
         if (LSM_LEVELING) {
             // FIXME: Kludgey implementation due to interface constraints.
             auto old_level = m_levels[0];
-            auto temp_level = new InternalLevel<R>(0, 1);
+            auto temp_level = new InternalLevel<R, S>(0, 1);
             temp_level->append_mem_table(buffer, rng);
-            auto new_level = InternalLevel<R>::merge_levels(old_level, temp_level, rng);
+            auto new_level = InternalLevel<R, S>::merge_levels(old_level, temp_level, rng);
 
             m_levels[0] = new_level;
             delete temp_level;
@@ -560,7 +564,7 @@ private:
      * level may not be able to immediately be deleted, depending upon who
      * else is using it.
      */ 
-    inline void mark_as_unused(InternalLevel<R> *level) {
+    inline void mark_as_unused(InternalLevel<R, S> *level) {
         delete level;
     }
 
@@ -609,6 +613,7 @@ private:
      * no guarantees about which buffer will be accessed if level_index is -1.
      */
     inline size_t get_level_record_count(level_index idx, MutableBuffer<R> *buffer=nullptr) {
+
         assert(idx >= -1);
         if (idx == -1) {
             return (buffer) ? buffer->get_record_count() : get_buffer()->get_record_count();
-- 
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