reorganize the whole thing into crates/ packages

4 files changed, 1093 insertions, 0 deletions

diff --git a/ci-lib-core/src/dbctx.rs b/ci-lib-core/src/dbctx.rs
new file mode 100644
index 0000000..7493030
--- /dev/null
+++ b/ci-lib-core/src/dbctx.rs
@@ -0,0 +1,647 @@
+use std::sync::Mutex;
+// use futures_util::StreamExt;
+use rusqlite::{Connection, OptionalExtension};
+use std::time::{SystemTime, UNIX_EPOCH};
+// use tokio::io::{AsyncReadExt, AsyncWriteExt};
+use std::path::Path;
+use std::path::PathBuf;
+use std::ops::Deref;
+
+use crate::sql;
+
+use crate::sql::ArtifactRecord;
+use crate::sql::Run;
+use crate::sql::TokenValidity;
+use crate::sql::MetricRecord;
+use crate::sql::PendingRun;
+use crate::sql::Job;
+use crate::sql::Remote;
+use crate::sql::Repo;
+
+const TOKEN_EXPIRY_MS: u64 = 1000 * 60 * 30;
+
+pub struct DbCtx {
+    pub config_path: PathBuf,
+    // don't love this but.. for now...
+    pub conn: Mutex<Connection>,
+}
+
+impl DbCtx {
+    pub fn new<P: AsRef<Path>>(config_path: P, db_path: P) -> Self {
+        DbCtx {
+            config_path: config_path.as_ref().to_owned(),
+            conn: Mutex::new(Connection::open(db_path).unwrap())
+        }
+    }
+
+    fn conn<'a>(&'a self) -> impl Deref<Target = Connection> + 'a {
+        self.conn.lock().unwrap()
+    }
+
+    pub fn create_tables(&self) -> Result<(), ()> {
+        let conn = self.conn.lock().unwrap();
+        conn.execute(sql::CREATE_ARTIFACTS_TABLE, ()).unwrap();
+        conn.execute(sql::CREATE_JOBS_TABLE, ()).unwrap();
+        conn.execute(sql::CREATE_METRICS_TABLE, ()).unwrap();
+        conn.execute(sql::CREATE_COMMITS_TABLE, ()).unwrap();
+        conn.execute(sql::CREATE_REPOS_TABLE, ()).unwrap();
+        conn.execute(sql::CREATE_REPO_NAME_INDEX, ()).unwrap();
+        conn.execute(sql::CREATE_REMOTES_TABLE, ()).unwrap();
+        conn.execute(sql::CREATE_REMOTES_INDEX, ()).unwrap();
+        conn.execute(sql::CREATE_RUNS_TABLE, ()).unwrap();
+        conn.execute(sql::CREATE_HOSTS_TABLE, ()).unwrap();
+
+        Ok(())
+    }
+
+    pub fn insert_metric(&self, run_id: u64, name: &str, value: &str) -> Result<(), String> {
+        let conn = self.conn.lock().unwrap();
+        conn
+            .execute(
+                "insert into metrics (run_id, name, value) values (?1, ?2, ?3) on conflict (run_id, name) do update set value=excluded.value",
+                (run_id, name, value)
+            )
+            .expect("can upsert");
+        Ok(())
+    }
+
+    pub fn new_commit(&self, sha: &str) -> Result<u64, String> {
+        let conn = self.conn.lock().unwrap();
+        conn
+            .execute(
+                "insert into commits (sha) values (?1)",
+                [sha.clone()]
+            )
+            .expect("can insert");
+
+        Ok(conn.last_insert_rowid() as u64)
+    }
+
+    pub fn new_repo(&self, name: &str) -> Result<u64, String> {
+        let conn = self.conn.lock().unwrap();
+        conn
+            .execute(
+                "insert into repos (repo_name) values (?1)",
+                [name.clone()]
+            )
+            .map_err(|e| {
+                format!("{:?}", e)
+            })?;
+
+        Ok(conn.last_insert_rowid() as u64)
+    }
+
+    pub async fn finalize_artifact(&self, artifact_id: u64) -> Result<(), String> {
+        let conn = self.conn.lock().unwrap();
+        conn
+            .execute(
+                "update artifacts set completed_time=?1 where id=?2",
+                (crate::now_ms(), artifact_id)
+            )
+            .map(|_| ())
+            .map_err(|e| {
+                format!("{:?}", e)
+            })
+    }
+
+    pub fn lookup_artifact(&self, run_id: u64, artifact_id: u64) -> Result<Option<ArtifactRecord>, String> {
+        let conn = self.conn.lock().unwrap();
+        conn
+            .query_row(sql::ARTIFACT_BY_ID, [artifact_id, run_id], |row| {
+                let (id, run_id, name, desc, created_time, completed_time) = row.try_into().unwrap();
+
+                Ok(ArtifactRecord {
+                    id, run_id, name, desc, created_time, completed_time
+                })
+            })
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn commit_sha(&self, commit_id: u64) -> Result<String, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row(
+                "select sha from commits where id=?1",
+                [commit_id],
+                |row| { row.get(0) }
+            )
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn job_for_commit(&self, sha: &str) -> Result<Option<u64>, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row(
+                "select id from commits where sha=?1",
+                [sha],
+                |row| { row.get(0) }
+            )
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn run_for_token(&self, token: &str) -> Result<Option<(u64, Option<String>, TokenValidity)>, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row(
+                "select id, artifacts_path, started_time, run_timeout from runs where build_token=?1",
+                [token],
+                |row| {
+                    let timeout: Option<u64> = row.get(3).unwrap();
+                    let timeout = timeout.unwrap_or(TOKEN_EXPIRY_MS);
+
+                    let now = crate::now_ms();
+
+                    let time: Option<u64> = row.get(2).unwrap();
+                    let validity = if let Some(time) = time {
+                        if now > time + timeout {
+                            TokenValidity::Expired
+                        } else {
+                            TokenValidity::Valid
+                        }
+                    } else {
+                        TokenValidity::Invalid
+                    };
+                    Ok((row.get(0).unwrap(), row.get(1).unwrap(), validity))
+                }
+            )
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn job_by_id(&self, id: u64) -> Result<Option<Job>, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row(crate::sql::JOB_BY_ID, [id], |row| {
+                let (id, source, created_time, remote_id, commit_id, run_preferences) = row.try_into().unwrap();
+
+                Ok(Job {
+                    id, source, created_time, remote_id, commit_id, run_preferences
+                })
+            })
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn remote_by_path_and_api(&self, api: &str, path: &str) -> Result<Option<Remote>, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row("select id, repo_id, remote_path, remote_api, remote_url, remote_git_url, notifier_config_path from remotes where remote_api=?1 and remote_path=?2", [api, path], |row| {
+                let (id, repo_id, remote_path, remote_api, remote_url, remote_git_url, notifier_config_path) = row.try_into().unwrap();
+
+                Ok(Remote {
+                    id, repo_id, remote_path, remote_api, remote_url, remote_git_url, notifier_config_path
+                })
+            })
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn remote_by_id(&self, id: u64) -> Result<Option<Remote>, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row("select id, repo_id, remote_path, remote_api, remote_url, remote_git_url, notifier_config_path from remotes where id=?1", [id], |row| {
+                let (id, repo_id, remote_path, remote_api, remote_url, remote_git_url, notifier_config_path) = row.try_into().unwrap();
+
+                Ok(Remote {
+                    id, repo_id, remote_path, remote_api, remote_url, remote_git_url, notifier_config_path
+                })
+            })
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn repo_id_by_remote(&self, remote_id: u64) -> Result<Option<u64>, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row("select repo_id from remotes where id=?1", [remote_id], |row| row.get(0))
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn repo_id_by_name(&self, repo_name: &str) -> Result<Option<u64>, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row("select id from repos where repo_name=?1", [repo_name], |row| row.get(0))
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn new_remote(&self, repo_id: u64, remote: &str, remote_kind: &str, config_path: &str) -> Result<u64, String> {
+        let (remote_path, remote_api, remote_url, remote_git_url) = match remote_kind {
+            "github" => {
+                (remote.to_owned(), remote_kind.to_owned(), format!("https://www.github.com/{}", remote), format!("https://www.github.com/{}.git", remote))
+            },
+            "github-email" => {
+                (remote.to_owned(), "email".to_owned(), format!("https://www.github.com/{}", remote), format!("http://www.github.com/{}.git", remote))
+            },
+            other => {
+                panic!("unsupported remote kind: {}", other);
+            }
+        };
+
+        let conn = self.conn.lock().unwrap();
+        conn
+            .execute(
+                "insert into remotes (repo_id, remote_path, remote_api, remote_url, remote_git_url, notifier_config_path) values (?1, ?2, ?3, ?4, ?5, ?6);",
+                (repo_id, remote_path, remote_api, remote_url, remote_git_url, config_path)
+            )
+            .expect("can insert");
+
+        Ok(conn.last_insert_rowid() as u64)
+    }
+
+    pub fn new_job(&self, remote_id: u64, sha: &str, pusher: Option<&str>, repo_default_run_pref: Option<String>) -> Result<u64, String> {
+        // TODO: potential race: if two remotes learn about a commit at the same time and we decide
+        // to create two jobs at the same time, this might return an incorrect id if the insert
+        // didn't actually insert a new row.
+        let commit_id = self.new_commit(sha).expect("can create commit record");
+
+        let created_time = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .expect("now is before epoch")
+            .as_millis() as u64;
+
+        let conn = self.conn.lock().unwrap();
+
+        let rows_modified = conn.execute(
+            "insert into jobs (remote_id, commit_id, created_time, source, run_preferences) values (?1, ?2, ?3, ?4, ?5);",
+            (remote_id, commit_id, created_time, pusher, repo_default_run_pref)
+        ).unwrap();
+
+        assert_eq!(1, rows_modified);
+
+        let job_id = conn.last_insert_rowid() as u64;
+
+        Ok(job_id)
+    }
+
+    pub fn new_run(&self, job_id: u64, host_preference: Option<u32>) -> Result<PendingRun, String> {
+        let created_time = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .expect("now is before epoch")
+            .as_millis() as u64;
+
+        let conn = self.conn.lock().unwrap();
+
+        let rows_modified = conn.execute(
+            "insert into runs (job_id, state, created_time, host_preference) values (?1, ?2, ?3, ?4);",
+            (job_id, crate::sql::RunState::Pending as u64, created_time, host_preference)
+        ).unwrap();
+
+        assert_eq!(1, rows_modified);
+
+        let run_id = conn.last_insert_rowid() as u64;
+
+        Ok(PendingRun {
+            id: run_id,
+            job_id,
+            create_time: created_time,
+        })
+    }
+
+    pub fn reap_task(&self, task_id: u64) -> Result<(), String> {
+        let conn = self.conn.lock().unwrap();
+
+        conn.execute(
+            "update runs set final_status=\"lost signal\", state=4 where id=?1;",
+            [task_id]
+        ).unwrap();
+
+        Ok(())
+    }
+
+    pub fn metrics_for_run(&self, run: u64) -> Result<Vec<MetricRecord>, String> {
+        let conn = self.conn.lock().unwrap();
+
+        let mut metrics_query = conn.prepare(sql::METRICS_FOR_RUN).unwrap();
+        let mut result = metrics_query.query([run]).unwrap();
+        let mut metrics = Vec::new();
+
+        while let Some(row) = result.next().unwrap() {
+            let (id, run_id, name, value): (u64, u64, String, String) = row.try_into().unwrap();
+            metrics.push(MetricRecord { id, run_id, name, value });
+        }
+
+        Ok(metrics)
+    }
+
+    pub fn artifacts_for_run(&self, run: u64, limit: Option<u64>) -> Result<Vec<ArtifactRecord>, String> {
+        let conn = self.conn.lock().unwrap();
+
+        let mut artifacts_query = conn.prepare(sql::LAST_ARTIFACTS_FOR_RUN).unwrap();
+        let mut result = artifacts_query.query([run, limit.unwrap_or(65535)]).unwrap();
+        let mut artifacts = Vec::new();
+
+        while let Some(row) = result.next().unwrap() {
+            let (id, run_id, name, desc, created_time, completed_time): (u64, u64, String, String, u64, Option<u64>) = row.try_into().unwrap();
+            artifacts.push(ArtifactRecord { id, run_id, name, desc, created_time, completed_time });
+        }
+
+        Ok(artifacts)
+    }
+
+    pub fn repo_by_id(&self, id: u64) -> Result<Option<Repo>, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row("select id, repo_name, default_run_preference from repos where id=?1", [id], |row| {
+                let (id, repo_name, default_run_preference) = row.try_into().unwrap();
+                Ok(Repo {
+                    id,
+                    name: repo_name,
+                    default_run_preference,
+                })
+            })
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn get_repos(&self) -> Result<Vec<Repo>, String> {
+        let conn = self.conn.lock().unwrap();
+
+        let mut repos_query = conn.prepare(sql::ALL_REPOS).unwrap();
+        let mut repos = repos_query.query([]).unwrap();
+        let mut result = Vec::new();
+
+        while let Some(row) = repos.next().unwrap() {
+            let (id, repo_name, default_run_preference) = row.try_into().unwrap();
+            result.push(Repo {
+                id,
+                name: repo_name,
+                default_run_preference,
+            });
+        }
+
+        Ok(result)
+    }
+
+    pub fn last_job_from_remote(&self, id: u64) -> Result<Option<Job>, String> {
+        self.recent_jobs_from_remote(id, 1)
+            .map(|mut jobs| jobs.pop())
+    }
+
+    pub fn job_by_commit_id(&self, commit_id: u64) -> Result<Option<Job>, String> {
+        let conn = self.conn.lock().unwrap();
+
+        conn
+            .query_row(sql::JOB_BY_COMMIT_ID, [commit_id], |row| {
+                let (id, source, created_time, remote_id, commit_id, run_preferences) = row.try_into().unwrap();
+                Ok(Job {
+                    id,
+                    remote_id,
+                    commit_id,
+                    created_time,
+                    source,
+                    run_preferences,
+                })
+            })
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn recent_jobs_from_remote(&self, id: u64, limit: u64) -> Result<Vec<Job>, String> {
+        let conn = self.conn.lock().unwrap();
+
+        let mut job_query = conn.prepare(sql::LAST_JOBS_FROM_REMOTE).unwrap();
+        let mut result = job_query.query([id, limit]).unwrap();
+
+        let mut jobs = Vec::new();
+
+        while let Some(row) = result.next().unwrap() {
+            let (id, source, created_time, remote_id, commit_id, run_preferences) = row.try_into().unwrap();
+            jobs.push(Job {
+                id,
+                remote_id,
+                commit_id,
+                created_time,
+                source,
+                run_preferences,
+            });
+        }
+
+        Ok(jobs)
+    }
+
+    pub fn get_active_runs(&self) -> Result<Vec<Run>, String> {
+        let conn = self.conn.lock().unwrap();
+
+        let mut started_query = conn.prepare(sql::ACTIVE_RUNS).unwrap();
+        let mut runs = started_query.query([]).unwrap();
+        let mut started = Vec::new();
+
+        while let Some(row) = runs.next().unwrap() {
+            started.push(Self::row2run(row));
+        }
+
+        Ok(started)
+    }
+
+    pub fn get_pending_runs(&self, host_id: Option<u32>) -> Result<Vec<PendingRun>, String> {
+        let conn = self.conn.lock().unwrap();
+
+        let mut pending_query = conn.prepare(sql::PENDING_RUNS).unwrap();
+        let mut runs = pending_query.query([host_id]).unwrap();
+        let mut pending = Vec::new();
+
+        while let Some(row) = runs.next().unwrap() {
+            let (id, job_id, create_time) = row.try_into().unwrap();
+            let run = PendingRun {
+                id,
+                job_id,
+                create_time,
+            };
+            pending.push(run);
+        }
+
+        Ok(pending)
+    }
+
+    pub fn jobs_needing_task_runs_for_host(&self, host_id: u64) -> Result<Vec<Job>, String> {
+        // for jobs that this host has not run, we'll arbitrarily say that we won't generate new
+        // runs for jobs more than a day old.
+        //
+        // we don't want to rebuild the entire history every time we see a new host by default; if
+        // you really want to rebuild all of history on a new host, use `ci_ctl` to prepare the
+        // runs.
+        let cutoff = crate::now_ms() - 24 * 3600 * 1000;
+
+        let conn = self.conn.lock().unwrap();
+
+        let mut jobs_needing_task_runs = conn.prepare(sql::JOBS_NEEDING_HOST_RUN).unwrap();
+        let mut job_rows = jobs_needing_task_runs.query([cutoff, host_id]).unwrap();
+        let mut jobs = Vec::new();
+
+        while let Some(row) = job_rows.next().unwrap() {
+            let (id, source, created_time, remote_id, commit_id, run_preferences) = row.try_into().unwrap();
+
+            jobs.push(Job {
+                id, source, created_time, remote_id, commit_id, run_preferences,
+            });
+        }
+
+        Ok(jobs)
+    }
+
+
+    pub fn remotes_by_repo(&self, repo_id: u64) -> Result<Vec<Remote>, String> {
+        let mut remotes: Vec<Remote> = Vec::new();
+
+        let conn = self.conn.lock().unwrap();
+        let mut remotes_query = conn.prepare(crate::sql::REMOTES_FOR_REPO).unwrap();
+        let mut remote_results = remotes_query.query([repo_id]).unwrap();
+
+        while let Some(row) = remote_results.next().unwrap() {
+            let (id, repo_id, remote_path, remote_api, remote_url, remote_git_url, notifier_config_path) = row.try_into().unwrap();
+            remotes.push(Remote { id, repo_id, remote_path, remote_api, remote_url, remote_git_url, notifier_config_path });
+        }
+
+        Ok(remotes)
+    }
+
+    /// try to find a host close to `host_info`, but maybe not an exact match.
+    ///
+    /// specifically, we'll ignore microcode and family/os - enough that measurements ought to be
+    /// comparable but maybe not perfectly so.
+    pub fn find_id_like_host(&self, host_info: &crate::protocol::HostInfo) -> Result<Option<u32>, String> {
+        self.conn.lock()
+            .unwrap()
+            .query_row(
+                "select id from hosts where \
+                    hostname=?1 and cpu_vendor_id=?2 and cpu_model_name=?3 and cpu_family=?4 and \
+                    cpu_model=?5 and cpu_max_freq_khz=?6 and cpu_cores=?7 and mem_total=?8 and \
+                    arch=?9);",
+                (
+                    &host_info.hostname,
+                    &host_info.cpu_info.vendor_id,
+                    &host_info.cpu_info.model_name,
+                    &host_info.cpu_info.family,
+                    &host_info.cpu_info.model,
+                    &host_info.cpu_info.max_freq,
+                    &host_info.cpu_info.cores,
+                    &host_info.memory_info.total,
+                    &host_info.env_info.arch,
+                ),
+                |row| { row.get(0) }
+            )
+            .map_err(|e| e.to_string())
+    }
+
+    /// get an id for the host described by `host_info`. this may create a new record if no such
+    /// host exists.
+    pub fn id_for_host(&self, host_info: &crate::protocol::HostInfo) -> Result<u32, String> {
+        let conn = self.conn.lock().unwrap();
+
+        conn
+            .execute(
+                "insert or ignore into hosts \
+                 (\
+                     hostname, cpu_vendor_id, cpu_model_name, cpu_family, \
+                     cpu_model, cpu_microcode, cpu_max_freq_khz, cpu_cores, \
+                     mem_total, arch, family, os\
+                 ) values (\
+                     ?1, ?2, ?3, ?4, \
+                     ?5, ?6, ?7, ?8, \
+                     ?9, ?10, ?11, ?12 \
+                 );",
+                (
+                    &host_info.hostname,
+                    &host_info.cpu_info.vendor_id,
+                    &host_info.cpu_info.model_name,
+                    &host_info.cpu_info.family,
+                    &host_info.cpu_info.model,
+                    &host_info.cpu_info.microcode,
+                    &host_info.cpu_info.max_freq,
+                    &host_info.cpu_info.cores,
+                    &host_info.memory_info.total,
+                    &host_info.env_info.arch,
+                    &host_info.env_info.family,
+                    &host_info.env_info.os,
+                )
+            )
+            .expect("can insert");
+
+        conn
+            .query_row(
+                "select id from hosts where \
+                    hostname=?1 and cpu_vendor_id=?2 and cpu_model_name=?3 and cpu_family=?4 and \
+                    cpu_model=?5 and cpu_microcode=?6 and cpu_max_freq_khz=?7 and \
+                    cpu_cores=?8 and mem_total=?9 and arch=?10 and family=?11 and os=?12;",
+                (
+                    &host_info.hostname,
+                    &host_info.cpu_info.vendor_id,
+                    &host_info.cpu_info.model_name,
+                    &host_info.cpu_info.family,
+                    &host_info.cpu_info.model,
+                    &host_info.cpu_info.microcode,
+                    &host_info.cpu_info.max_freq,
+                    &host_info.cpu_info.cores,
+                    &host_info.memory_info.total,
+                    &host_info.env_info.arch,
+                    &host_info.env_info.family,
+                    &host_info.env_info.os,
+                ),
+                |row| { row.get(0) }
+            )
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn host_model_info(&self, host_id: u64) -> Result<(String, String, String, String, u64), String> {
+        let conn = self.conn.lock().unwrap();
+        conn
+            .query_row("select hostname, cpu_vendor_id, cpu_family, cpu_model, cpu_max_freq_khz from hosts where id=?1;", [host_id], |row| {
+                Ok((
+                    row.get(0).unwrap(),
+                    row.get(1).unwrap(),
+                    row.get(2).unwrap(),
+                    row.get(3).unwrap(),
+                    row.get(4).unwrap(),
+                ))
+            })
+            .map_err(|e| e.to_string())
+    }
+
+    pub fn runs_for_job_one_per_host(&self, job_id: u64) -> Result<Vec<Run>, String> {
+        let conn = self.conn.lock().unwrap();
+        let mut runs_query = conn.prepare(crate::sql::RUNS_FOR_JOB).unwrap();
+        let mut runs_results = runs_query.query([job_id]).unwrap();
+
+        let mut results = Vec::new();
+
+        while let Some(row) = runs_results.next().unwrap() {
+            results.push(Self::row2run(row));
+        }
+
+        Ok(results)
+    }
+
+    pub fn last_run_for_job(&self, job_id: u64) -> Result<Option<Run>, String> {
+        let conn = self.conn.lock().unwrap();
+
+        conn
+            .query_row(sql::LAST_RUN_FOR_JOB, [job_id], |row| {
+                Ok(Self::row2run(row))
+            })
+            .optional()
+            .map_err(|e| e.to_string())
+    }
+
+    pub(crate) fn row2run(row: &rusqlite::Row) -> Run {
+        let (id, job_id, artifacts_path, state, host_id, build_token, create_time, start_time, complete_time, run_timeout, build_result, final_text) = row.try_into().unwrap();
+        let state: u8 = state;
+        Run {
+            id,
+            job_id,
+            artifacts_path,
+            state: state.try_into().unwrap(),
+            host_id,
+            create_time,
+            start_time,
+            complete_time,
+            build_token,
+            run_timeout,
+            build_result,
+            final_text,
+        }
+    }
+}
diff --git a/ci-lib-core/src/lib.rs b/ci-lib-core/src/lib.rs
new file mode 100644
index 0000000..c20ce8e
--- /dev/null
+++ b/ci-lib-core/src/lib.rs
@@ -0,0 +1,13 @@
+use std::time::{SystemTime, UNIX_EPOCH};
+
+
+pub mod protocol;
+pub mod sql;
+pub mod dbctx;
+
+pub fn now_ms() -> u64 {
+    SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .expect("now is later than epoch")
+        .as_millis() as u64
+}
diff --git a/ci-lib-core/src/protocol.rs b/ci-lib-core/src/protocol.rs
new file mode 100644
index 0000000..c7a9318
--- /dev/null
+++ b/ci-lib-core/src/protocol.rs
@@ -0,0 +1,114 @@
+use serde::{Serialize, Deserialize};
+
+#[derive(Serialize, Deserialize, Debug)]
+#[serde(tag = "kind")]
+#[serde(rename_all = "snake_case")]
+pub enum ClientProto {
+    Started,
+    ArtifactCreate,
+    NewTask(RequestedJob),
+    NewTaskPlease { allowed_pushers: Option<Vec<String>>, host_info: HostInfo },
+    Metric { name: String, value: String },
+    Command(CommandInfo),
+    TaskStatus(TaskInfo),
+    Ping,
+    Pong,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+#[serde(tag = "command_info")]
+#[serde(rename_all = "snake_case")]
+pub enum CommandInfo {
+    Started { command: Vec<String>, cwd: Option<String>, id: u32 },
+    Finished { exit_code: Option<i32>, id: u32 },
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+#[serde(tag = "task_info")]
+#[serde(rename_all = "snake_case")]
+pub enum TaskInfo {
+    Finished { status: String },
+    Interrupted { status: String, description: Option<String> },
+}
+
+impl ClientProto {
+    pub fn metric(name: impl Into<String>, value: impl Into<String>) -> Self {
+        ClientProto::Metric { name: name.into(), value: value.into() }
+    }
+
+    pub fn command(state: CommandInfo) -> Self {
+        ClientProto::Command(state)
+    }
+
+    pub fn new_task_please(allowed_pushers: Option<Vec<String>>, host_info: HostInfo) -> Self {
+        ClientProto::NewTaskPlease { allowed_pushers, host_info }
+    }
+
+    pub fn task_status(state: TaskInfo) -> Self {
+        ClientProto::TaskStatus(state)
+    }
+
+    pub fn new_task(task: RequestedJob) -> Self {
+        ClientProto::NewTask(task)
+    }
+}
+
+impl CommandInfo {
+    pub fn started(command: impl Into<Vec<String>>, cwd: Option<&str>, id: u32) -> Self {
+        CommandInfo::Started { command: command.into(), cwd: cwd.map(ToOwned::to_owned), id }
+    }
+
+    pub fn finished(exit_code: Option<i32>, id: u32) -> Self {
+        CommandInfo::Finished { exit_code, id }
+    }
+}
+
+impl TaskInfo {
+    pub fn finished(status: impl Into<String>) -> Self {
+        TaskInfo::Finished { status: status.into() }
+    }
+
+    pub fn interrupted(status: impl Into<String>, description: impl Into<Option<String>>) -> Self {
+        TaskInfo::Interrupted { status: status.into(), description: description.into() }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct HostInfo {
+    pub hostname: String,
+    pub cpu_info: CpuInfo,
+    pub memory_info: MemoryInfo,
+    pub env_info: EnvInfo,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct CpuInfo {
+    pub model_name: String,
+    pub microcode: String,
+    pub cores: u32,
+    pub vendor_id: String,
+    pub family: String,
+    pub model: String,
+    // clock speed in khz
+    pub max_freq: u64,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct MemoryInfo {
+    pub total: String,
+    pub available: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct EnvInfo {
+    pub arch: String,
+    pub family: String,
+    pub os: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct RequestedJob {
+    pub commit: String,
+    pub remote_url: String,
+    pub build_token: String,
+}
diff --git a/ci-lib-core/src/sql.rs b/ci-lib-core/src/sql.rs
new file mode 100644
index 0000000..2aeb52b
--- /dev/null
+++ b/ci-lib-core/src/sql.rs
@@ -0,0 +1,319 @@
+#![allow(dead_code)]
+
+use std::convert::TryFrom;
+
+#[derive(Debug, Clone)]
+pub struct PendingRun {
+    pub id: u64,
+    pub job_id: u64,
+    pub create_time: u64,
+}
+
+impl Run {
+    fn into_pending_run(self) -> PendingRun {
+        PendingRun {
+            id: self.id,
+            job_id: self.job_id,
+            create_time: self.create_time,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum TokenValidity {
+    Expired,
+    Invalid,
+    Valid,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct MetricRecord {
+    pub id: u64,
+    pub run_id: u64,
+    pub name: String,
+    pub value: String
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct ArtifactRecord {
+    pub id: u64,
+    pub run_id: u64,
+    pub name: String,
+    pub desc: String,
+    pub created_time: u64,
+    pub completed_time: Option<u64>,
+}
+
+#[derive(Debug, Clone)]
+pub struct Repo {
+    pub id: u64,
+    pub name: String,
+    pub default_run_preference: Option<String>,
+}
+
+#[derive(Debug)]
+pub struct Remote {
+    pub id: u64,
+    pub repo_id: u64,
+    pub remote_path: String,
+    pub remote_api: String,
+    pub remote_url: String,
+    pub remote_git_url: String,
+    pub notifier_config_path: String,
+}
+
+// a job tracks when we became aware of a commit from remote. typically a job will have a 1-1
+// relationship with commits, and potentially many *runs* of that job.
+#[derive(Debug, Clone)]
+pub struct Job {
+    pub id: u64,
+    pub remote_id: u64,
+    pub commit_id: u64,
+    pub created_time: u64,
+    pub source: Option<String>,
+    pub run_preferences: Option<String>,
+}
+
+// a run tracks the intent or obligation to have some runner somewhere run a goodfile and report
+// results. a job may have many runs from many different hosts rebuliding history, or reruns of the
+// same job on the same hardware to collect more datapoints on the operation.
+#[derive(Debug, Clone)]
+pub struct Run {
+    pub id: u64,
+    pub job_id: u64,
+    pub artifacts_path: Option<String>,
+    pub state: RunState,
+    pub host_id: Option<u64>,
+    pub create_time: u64,
+    pub start_time: Option<u64>,
+    pub complete_time: Option<u64>,
+    pub build_token: Option<String>,
+    pub run_timeout: Option<u64>,
+    pub build_result: Option<u8>,
+    pub final_text: Option<String>,
+}
+
+#[derive(Debug, Clone)]
+pub enum JobResult {
+    Pass = 0,
+    Fail = 1,
+}
+
+#[derive(Debug, Copy, Clone, PartialEq)]
+pub enum RunState {
+    Pending = 0,
+    Started = 1,
+    Finished = 2,
+    Error = 3,
+    Invalid = 4,
+}
+
+impl TryFrom<u8> for RunState {
+    type Error = String;
+
+    fn try_from(value: u8) -> Result<Self, String> {
+        match value {
+            0 => Ok(RunState::Pending),
+            1 => Ok(RunState::Started),
+            2 => Ok(RunState::Finished),
+            3 => Ok(RunState::Error),
+            4 => Ok(RunState::Invalid),
+            other => Err(format!("invalid job state: {}", other)),
+        }
+    }
+}
+
+/*
+pub(crate) fn row2run(row: &rusqlite::Row) -> Run {
+    let (id, job_id, artifacts_path, state, host_id, build_token, create_time, start_time, complete_time, run_timeout, build_result, final_text) = row.try_into().unwrap();
+    let state: u8 = state;
+    Run {
+        id,
+        job_id,
+        artifacts_path,
+        state: state.try_into().unwrap(),
+        host_id,
+        create_time,
+        start_time,
+        complete_time,
+        build_token,
+        run_timeout,
+        build_result,
+        final_text,
+    }
+}
+*/
+
+// remote_id is the remote from which we were notified. this is necessary so we know which remote
+// to pull from to actually run the job.
+pub const CREATE_JOBS_TABLE: &'static str = "\
+    CREATE TABLE IF NOT EXISTS jobs (id INTEGER PRIMARY KEY AUTOINCREMENT,
+        source TEXT,
+        created_time INTEGER,
+        remote_id INTEGER,
+        commit_id INTEGER,
+        run_preferences TEXT);";
+
+pub const CREATE_METRICS_TABLE: &'static str = "\
+    CREATE TABLE IF NOT EXISTS metrics (id INTEGER PRIMARY KEY AUTOINCREMENT,
+        job_id INTEGER,
+        name TEXT,
+        value TEXT,
+        UNIQUE(job_id, name)
+    );";
+
+pub const CREATE_COMMITS_TABLE: &'static str = "\
+    CREATE TABLE IF NOT EXISTS commits (id INTEGER PRIMARY KEY AUTOINCREMENT, sha TEXT UNIQUE);";
+
+pub const CREATE_REPOS_TABLE: &'static str = "\
+    CREATE TABLE IF NOT EXISTS repos (id INTEGER PRIMARY KEY AUTOINCREMENT,
+        repo_name TEXT,
+        default_run_preference TEXT);";
+
+// remote_api is `github` or NULL for now. hopefully a future cgit-style notifier one day.
+// remote_path is some unique identifier for the relevant remote.
+// * for `github` remotes, this will be `owner/repo`.
+// * for others.. who knows.
+// remote_url is a url for human interaction with the remote (think https://git.iximeow.net/zvm)
+// remote_git_url is a url that can be `git clone`'d to fetch sources
+pub const CREATE_REMOTES_TABLE: &'static str = "\
+    CREATE TABLE IF NOT EXISTS remotes (id INTEGER PRIMARY KEY AUTOINCREMENT,
+        repo_id INTEGER,
+        remote_path TEXT,
+        remote_api TEXT,
+        remote_url TEXT,
+        remote_git_url TEXT,
+        notifier_config_path TEXT);";
+
+pub const CREATE_ARTIFACTS_TABLE: &'static str = "\
+    CREATE TABLE IF NOT EXISTS artifacts (id INTEGER PRIMARY KEY AUTOINCREMENT,
+        run_id INTEGER,
+        name TEXT,
+        desc TEXT,
+        created_time INTEGER,
+        completed_time INTEGER);";
+
+pub const CREATE_RUNS_TABLE: &'static str = "\
+    CREATE TABLE IF NOT EXISTS runs (id INTEGER PRIMARY KEY AUTOINCREMENT,
+        job_id INTEGER,
+        artifacts_path TEXT,
+        state INTEGER NOT NULL,
+        host_id INTEGER,
+        build_token TEXT,
+        created_time INTEGER,
+        started_time INTEGER,
+        complete_time INTEGER,
+        run_timeout INTEGER,
+        build_result INTEGER,
+        final_status TEXT);";
+
+pub const CREATE_HOSTS_TABLE: &'static str = "\
+    CREATE TABLE IF NOT EXISTS hosts (id INTEGER PRIMARY KEY AUTOINCREMENT,
+        hostname TEXT,
+        cpu_vendor_id TEXT,
+        cpu_model_name TEXT,
+        cpu_family TEXT,
+        cpu_model TEXT,
+        cpu_microcode TEXT,
+        cpu_max_freq_khz INTEGER,
+        cpu_cores INTEGER,
+        mem_total TEXT,
+        arch TEXT,
+        family TEXT,
+        os TEXT,
+        UNIQUE(hostname, cpu_vendor_id, cpu_model_name, cpu_family, cpu_model, cpu_microcode, cpu_cores, mem_total, arch, family, os));";
+
+pub const CREATE_REMOTES_INDEX: &'static str = "\
+    CREATE INDEX IF NOT EXISTS 'repo_to_remote' ON remotes(repo_id);";
+
+pub const CREATE_REPO_NAME_INDEX: &'static str = "\
+    CREATE UNIQUE INDEX IF NOT EXISTS 'repo_names' ON repos(repo_name);";
+
+pub const PENDING_RUNS: &'static str = "\
+    select id, job_id, created_time, host_preference from runs where state=0 and (host_preference=?1 or host_preference is null) order by created_time desc;";
+
+pub const JOBS_NEEDING_HOST_RUN: &'static str = "\
+    select jobs.id, jobs.source, jobs.created_time, jobs.remote_id, jobs.commit_id, jobs.run_preferences from jobs \
+    where jobs.run_preferences=\"all\" and jobs.created_time > ?1 \
+    and not exists \
+        (select 1 from runs r2 where r2.job_id = jobs.id and r2.host_id = ?2);";
+
+pub const ACTIVE_RUNS: &'static str = "\
+    select id,
+        job_id,
+        artifacts_path,
+        state,
+        host_id,
+        build_token,
+        created_time,
+        started_time,
+        complete_time,
+        run_timeout,
+        build_result,
+        final_status from runs where state=1 or state=0;";
+
+pub const LAST_ARTIFACTS_FOR_RUN: &'static str = "\
+    select * from artifacts where run_id=?1 and (name like \"%(stderr)%\" or name like \"%(stdout)%\") order by id desc limit ?2;";
+
+pub const JOB_BY_COMMIT_ID: &'static str = "\
+    select id, source, created_time, remote_id, commit_id, run_preferences from jobs where commit_id=?1;";
+
+pub const ARTIFACT_BY_ID: &'static str = "\
+    select * from artifacts where id=?1 and run_id=?2;";
+
+pub const JOB_BY_ID: &'static str = "\
+    select id, source, created_time, remote_id, commit_id, run_preferences from jobs where id=?1";
+
+pub const METRICS_FOR_RUN: &'static str = "\
+    select * from metrics where run_id=?1 order by id asc;";
+
+pub const METRICS_FOR_JOB: &'static str = "\
+    select metrics.id, metrics.run_id, metrics.name, metrics.value from metrics \
+    join runs on runs.id=metrics.run_id \
+    where runs.job_id=?1 \
+    order by metrics.run_id desc, metrics.id desc;";
+
+pub const COMMIT_TO_ID: &'static str = "\
+    select id from commits where sha=?1;";
+
+pub const REMOTES_FOR_REPO: &'static str = "\
+    select * from remotes where repo_id=?1;";
+
+pub const ALL_REPOS: &'static str = "\
+    select id, repo_name, default_run_preference from repos;";
+
+pub const LAST_JOBS_FROM_REMOTE: &'static str = "\
+    select id, source, created_time, remote_id, commit_id, run_preferences from jobs where remote_id=?1 order by created_time desc limit ?2;";
+
+pub const LAST_RUN_FOR_JOB: &'static str = "\
+    select id,
+        job_id,
+        artifacts_path,
+        state,
+        host_id,
+        build_token,
+        created_time,
+        started_time,
+        complete_time,
+        run_timeout,
+        build_result,
+        final_status from runs where job_id=?1 order by started_time desc limit 1;";
+
+pub const RUNS_FOR_JOB: &'static str = "\
+    select id,
+        job_id,
+        artifacts_path,
+        state,
+        host_id,
+        build_token,
+        created_time,
+        started_time,
+        complete_time,
+        run_timeout,
+        build_result,
+        final_status from runs where job_id=?1 group by host_id order by started_time desc, state asc;";
+
+pub const SELECT_ALL_RUNS_WITH_JOB_INFO: &'static str = "\
+    select jobs.id as job_id, runs.id as run_id, runs.state, runs.created_time, jobs.commit_id, jobs.run_preferences
+    from jobs join runs on jobs.id=runs.job_id
+    oder by runs.created_time asc;";